{"title":"Model Rockets, Kits \u0026 Motors","description":"\u003cp\u003eShop model rockets, rocket kits, motors and related hobby products at Muncle Mikes. Current Estes listings include buildable rocket kits, engine packs and air-rocket accessories. Compare the exact model number, skill level, dimensions and included pieces before choosing a project.\u003c\/p\u003e\u003ch2\u003eMatch the kit and launch equipment\u003c\/h2\u003e\u003cp\u003eA rocket kit, motor pack and air-rocket replacement are different items. Check the listing for required motor size, launch equipment and assembly materials. Motors, launch systems, adhesives and paint are included only when the individual product page says so.\u003c\/p\u003e\u003cp\u003eExplore more \u003ca href=\"\/collections\/plastic-model-car-truck-kits\"\u003emodel kits\u003c\/a\u003e, \u003ca href=\"\/collections\/model-building-supplies\"\u003emodel building supplies\u003c\/a\u003e and \u003ca href=\"\/collections\/hobby-tools\"\u003ehobby tools\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"estes-mini-mod-starter-set-0643","title":"Estes Mini Mod™ Starter Set #0643","description":"\u003cp\u003e\u003cstrong\u003eEstes Mini Mod™ Starter Set #0643\u003c\/strong\u003e is an Estes model rocket starter set for hobby building, STEM learning, and launch-day flying.\u003c\/p\u003e\u003cp\u003eThe Mini Mod™ Starter Set is the perfect way to kickstart your model rocketry adventure. Whether you're launching in the backyard or introducing a new hobby to the family, this all-in-one set has everything you need for four full flights of high-flying fun. Just add glue and AA batteries—and you're ready to launch! Ready for Liftoff—Right Out of the Box No extra shopping, no guesswork. The Mini Mod™ Starter Set includes the Mini Mod™ rocket, four A3-4T engines, four starters, four plugs, recovery wadding, the Porta-Pad II® launch pad, and the Electron Beam® launch controller. It’s the fastest and easiest way to get started with model rocketry. Custom Looks, Easy Build Build it your way! With two fin styles and optional body tube extensions, the Mini Mod™ can be assembled in six different configurations. The snap-fit design and color-coded parts make assembly quick and beginner-friendly—n\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0643\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0643\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046640673080,"sku":"EST0643","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0643_MiniMod_StarterSet_BoxWRocket.png?v=1790553138"},{"product_id":"estes-tri-flyer-stem-kit-0647","title":"Estes Tri-Flyer STEM Kit #0647","description":"\u003cp\u003e\u003cstrong\u003eEstes Tri-Flyer STEM Kit #0647\u003c\/strong\u003e is an Estes model rocket stem kit for hobby building, STEM learning, and launch-day flying.\u003c\/p\u003e\u003cp\u003eGet Ready for Lift-Off If you're new to rocketry, the Tri-Flyer is your perfect starting point. It's designed to be simple and exciting, so you can have a blast right from the beginning! Rocket Basics Size: The Tri-Flyer stands about 2 feet tall and is less than an inch wide. It's just the right size for easy handling. Weight: It's lightweight, allowing for it soar up into the sky. 3 Is Greater Than One With 3 included fin cans, you have the opportunity to experience multiple different flights with your rocket! Use these different fin cans to complete the activities in the included STEM activity book! Safe Return After its high-flying adventure, the Tri-Flyer comes back to Earth gently. A special parachute system ensures a smooth landing every time. What You Need All you need to get started is a safe place to launch, a launch pad like the Porta Pad II, and a small rod to support the rock\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0647\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0647\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046640902456,"sku":"EST0647","price":76.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0647_Tri-Flyer_BoxWithRocket.png?v=1790553139"},{"product_id":"estes-roto-rocket-stem-kit-0648","title":"Estes Roto Rocket™ STEM Kit #0648","description":"\u003cp\u003e\u003cstrong\u003eEstes Roto Rocket™ STEM Kit #0648\u003c\/strong\u003e is an Estes model rocket stem kit for hobby building, STEM learning, and launch-day flying.\u003c\/p\u003e\u003cp\u003eEasy Launch for Beginners The Roto Rocket is engineered for beginners, ensuring an exciting introduction to rocketry. Its user-friendly design and simple assembly process make it a perfect choice for those new to this thrilling hobby! Reach for the Skies Equipped with recommended C6-3 and C5-3 engines, the Roto Rocket is set to reach impressive altitudes. With a projected max height of 500 feet (152.4 meters), you'll witness the world from a whole new perspective! Unique Helicopter Recovery What sets the Roto Rocket apart is its innovative helicopter-style recovery system. After reaching its peak, the rocket descends in a graceful spiral, mimicking a helicopter rotor. It's a mesmerizing sight and provides a valuable lesson in aerodynamics! Combining Parachute Safety For a safe and controlled landing, the Roto Rocket also includes a parachute system. This dual recovery method ensures your\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0648\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0648\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046641066296,"sku":"EST0648","price":76.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0648_RotoRocket_BoxWithRocket.png?v=1790553140"},{"product_id":"estes-astro-assembler-0649","title":"Estes Astro Assembler™ Model Rocket Kit #0649","description":"\u003cp\u003e\u003cstrong\u003eEstes Astro Assembler™ Model Rocket Kit #0649\u003c\/strong\u003e is an Estes model rocket kit for hobby building, STEM learning, and launch-day flying.\u003c\/p\u003e\u003cp\u003eA Rocket You Build Piece by Piece The Astro Assembler™ reimagines what a model rocket can be. Instead of a traditional smooth body, this rocket is constructed using 3D interlocking puzzle segments that snap together around the body tube. Each piece clicks into place, turning the build into a hands-on, satisfying experience that feels more like solving a puzzle than assembling a kit. With sixty individual pieces to work with, every step keeps builders engaged. It is approachable for beginners, yet different enough to feel new even for experienced hobbyists looking for something creative. Make It Your Own This is not just a rocket you build, it is one you design. The Astro Assembler lets you mix and match puzzle piece colors to create your own pattern, then finish it off with bold, space-themed decals featuring planets, stars, and a playful astronaut. No two builds have to look the same. W\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0649\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0649\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046641230136,"sku":"EST0649","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0649-Astro-Assembler-Puzzle-Model-Rocket-Kit.png?v=1790553142"},{"product_id":"estes-der-red-max-0651","title":"Estes Der Red Max™ Model Rocket Kit #0651","description":"\u003cp\u003e\u003cstrong\u003eEstes Der Red Max™ Model Rocket Kit #0651\u003c\/strong\u003e is an Estes model rocket kit for hobby building, STEM learning, and launch-day flying.\u003c\/p\u003e\u003cp\u003eThinking about far-out fun? Think of Der Red Max Model Rocket! An Estes classic, the Der Red Max has a large stable design, giving great sport performance. A great addition to any rocket collection! The Der Red Max model rocket is a classic that not only looks good, but also performs as good as it looks and has a personality all its own! Standing just a tad over 16 inches tall, the Max is one of our rockets that's a must have in your rocket arsenal. Not to mention, every launch with our standard engines will give you stellar flights over 500 feet. To top it off, a colorful 18 inch parachute accomplishes the recovery for safe landings. In addition to retaining all of the great looks and flying qualities of the original, this new version now features laser cut wood fins for improved performance and it has a waterslide decal set that replicates the original - including the totally cool skul\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0651\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0651\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046641393976,"sku":"EST0651","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/estes-der-red-max-rocket.png?v=1790553143"},{"product_id":"estes-ripley-rocket-0653","title":"Estes Ripley Rocket™ Model Rocket Kit #0653","description":"\u003cp\u003e\u003cstrong\u003eEstes Ripley Rocket™ Model Rocket Kit #0653\u003c\/strong\u003e is an Estes model rocket kit for hobby building, STEM learning, and launch-day flying.\u003c\/p\u003e\u003cp\u003eIntroducing the Estes Ripley: Your Next Rocketry Adventure The Estes Ripley is the latest innovation in the world of model rocketry, designed for intermediate rocketeers who are eager to elevate their skills! As a mini rocket kit with a powerful punch, the Ripley is engineered to impress, offering a thrilling experience with every launch! Capable of reaching heights of up to 600 feet, this rocket ensures an exhilarating journey from liftoff to landing! Unleash Your Imagination with an Alien-Like Design What truly sets the Estes Ripley apart from other rockets is its striking alien-like design. This unique aesthetic captures the imagination, making it a standout piece in any rocketry collection! Whether you’re launching at a club event or in your backyard, the Ripley’s otherworldly design is sure to turn heads and spark conversations! Streamer Recovery System: Safe Landings Every Time Saf\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0653\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0653\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046641557816,"sku":"EST0653","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/Ripley-Rocket-Package.png?v=1790553145"},{"product_id":"estes-esam-58-0661","title":"Estes ESAM-58™ Model Rocket Kit #0661","description":"\u003cp\u003e\u003cstrong\u003eEstes ESAM-58™ Model Rocket Kit #0661\u003c\/strong\u003e is an Estes model rocket kit for hobby building, launch-day flying, and rocketry projects.\u003c\/p\u003e\u003cp\u003eThe ESAM-58 is not just another model rocket. It is a project that pulls you in from the very first step. From the feel of the precision-cut balsa fins to the satisfaction of fitting every piece perfectly, this rocket rewards builders who love the process as much as the launch. Every detail comes together to create a sleek, high-performance design that looks incredible and flies even better. Performance That Commands Attention When the ESAM-58 takes off, you feel it. The sound, the power, the rush of watching it soar straight and true into the sky. On a C6-5 engine, it climbs to an impressive 800 feet before floating back down under its bright 18-inch parachute. Every launch delivers a thrilling reminder of why rocketry captures our imagination. A Build That Challenges and Rewards This advanced skill level kit is perfect for experienced modelers who want a more hands-on build. The ESAM-5\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0661\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0661\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046641688888,"sku":"EST0661","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0661-ESAM-58-Rocket-Kit.png?v=1790553146"},{"product_id":"estes-mini-mod-0663","title":"Estes Mini Mod™ Model Rocket Kit #0663","description":"\u003cp\u003e\u003cstrong\u003eEstes Mini Mod™ Model Rocket Kit #0663\u003c\/strong\u003e is an Estes model rocket kit for hobby building, launch-day flying, and rocketry projects.\u003c\/p\u003e\u003cp\u003eThe Mini Mod™ model rocket is the ultimate customizable STEM rocket kit for beginners. Designed with flexibility in mind, the Mini Mod features six different ways to build and fly, thanks to two interchangeable fin styles and two optional body tube extensions. Whether you're launching for fun or leading a classroom activity, this rocket delivers a unique hands-on learning experience every time. Beginner-Friendly and Quick to Build With its snap-fit construction and color-coded parts, the Mini Mod is easy to build in under an hour—making it perfect for students, first-time flyers, or weekend hobbyists. No cutting or sanding is required, and assembly is straightforward with clear step-by-step instructions included. Just grab your glue, tape, and launch supplies (sold separately), and you're ready to go. High-Flying Fun with Streamer Recovery Don’t let its small size fool you—the Mini Mod i\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0663\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0663\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046641787192,"sku":"EST0663","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0663-Mini-Mod-Rocket.png?v=1790553147"},{"product_id":"estes-star-weaver-0688","title":"Estes Star Weaver™ Model Rocket Kit #0688","description":"\u003cp\u003e\u003cstrong\u003eEstes Star Weaver™ Model Rocket Kit #0688\u003c\/strong\u003e is an Estes model rocket kit for hobby building, launch-day flying, and rocketry projects.\u003c\/p\u003e\u003cp\u003eThe Star Weaver™ is designed for experienced builders who want more than a straightforward flight. This advanced skill level kit rewards precision and patience with a rocket that delivers both striking looks and serious performance. From careful fin alignment to staging configuration, every step of the build invites you to sharpen your skills and enjoy the satisfaction of a well executed, high performance model. Fly Single Stage or Two Stage One of the Star Weaver’s most exciting features is its versatility. Fly it as a single stage rocket for clean, controlled launches, or configure it as a two stage model for a dramatic boost followed by sustained upper stage flight. Powered by 13 mm mini engines, the two stage configuration delivers an exhilarating ignition sequence that adds excitement and variety to every launch day. Soar to Impressive Altitudes When flown in a two stage setup, the\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0688\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0688\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046641885496,"sku":"EST0688","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0688-Star-Weaver-Model-Rocket-Kit.png?v=1790553148"},{"product_id":"estes-celestial-explorer-0689","title":"Estes Celestial Explorer™ Model Rocket Kit #0689","description":"\u003cp\u003e\u003cstrong\u003eEstes Celestial Explorer™ Model Rocket Kit #0689\u003c\/strong\u003e is an Estes model rocket kit for hobby building, launch-day flying, and rocketry projects.\u003c\/p\u003e\u003cp\u003eEasy to Build in Under 10 Minutes The Celestial Explorer is designed with beginners in mind, requiring minimal tools and assembly time. Its intuitive construction process ensures that even first-time builders can have their rocket ready for launch in less than 10 minutes. Simply follow the included instructions, attach the fins, and prepare for liftoff. This simplicity doesn’t compromise performance; once built, the Celestial Explorer is a reliable and high-performing rocket. High Altitude Performance Equipped with an 18mm engine, the Celestial Explorer can soar to impressive heights. Depending on the engine selected, the rocket can reach a maximum altitude of up to 1,000 feet. Whether you're using an A8-3 for a gentle ascent or a C6-5 for a thrilling high-altitude flight, the Celestial Explorer provides versatile and exhilarating launch experiences tailored to your preference. Durable a\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0689\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0689\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046641951032,"sku":"EST0689","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0689-Celestial-Explorer.png?v=1790553149"},{"product_id":"estes-liberty-star-0691","title":"Estes Liberty Star™ Model Rocket Kit #0691","description":"\u003cp\u003e\u003cstrong\u003eEstes Liberty Star™ Model Rocket Kit #0691\u003c\/strong\u003e is an Estes model rocket kit for hobby building, launch-day flying, and rocketry projects.\u003c\/p\u003e\u003cp\u003eA Limited Edition Rocket for a Once-in-a-Generation Celebration The Liberty Star™ was created to celebrate America’s 250th anniversary with the kind of launch-day excitement only an Estes rocket can deliver. Its bold red, white, and blue deco scheme brings patriotic energy to every countdown, giving families a thrilling, hands-on way to celebrate that goes beyond the usual fireworks show. As a limited edition release, the Liberty Star is available only in limited quantities for this historic milestone. It is a rocket made for the moment, combining the pride of celebration with the thrill of liftoff in a design that feels just as meaningful on display as it does climbing into the sky. Fast Assembly for First-Time Flyers Designed with beginners in mind, the Liberty Star assembles in under 10 minutes, making it an easy choice for new rocketeers who want to get from box to launch pad quickly\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0691\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0691\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642016568,"sku":"EST0691","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0691-Liberty-Star-Model-Rocket-Kit-shadow.png?v=1790553151"},{"product_id":"estes-luna-bug-0816","title":"Estes Luna Bug™ Model Rocket Kit #0816","description":"\u003cp\u003e\u003cstrong\u003eEstes Luna Bug™ Model Rocket Kit #0816\u003c\/strong\u003e is an Estes model rocket kit for hobby building, launch-day flying, and rocketry projects.\u003c\/p\u003e\u003cp\u003eThe Luna Bug Model Rocket is capable of soaring up to 800 feet on Estes Mini Engines thanks to the power packed into its tiny body. This rocket offers a challenge for entry level as well as intermediate level rocket enthusiasts. It is great for people looking to take their skills to the next level. Built from high-quality materials and designed to withstand the rigors of high-altitude flights, the Luna Bug Model Rocket is a powerful and exciting addition to any rocket collection despite its small size. Keep altitudes high with the Luna Bug Rocket! Here are some additional features : Length: 3 ½\" Diameter: ½\" Compatible with Estes Mini Engines Durable construction Suitable for all skill levels Overall, the Luna Bug is a fantastic choice for anyone who loves rocketry. Whether you're a seasoned rocketeer or a beginner, this rocket offers a fun and exciting challenge that is sure to keep you\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 0816\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST0816\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642082104,"sku":"EST0816","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/0816-Luna-Bug-Model-Rocket-Kit.png?v=1790553152"},{"product_id":"estes-f15-2-engines-29-mm-10009","title":"Estes F15-2 Engines (29 mm) #10009","description":"\u003cp\u003e\u003cstrong\u003eEstes F15-2 Engines (29 mm) #10009\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eDesigned for rockets that use 29mm motors, the F15-2 Engines deliver strong lift and a long 3.45 second burn for higher altitude flights and impressive launch performance. Their long burn time keeps your rocket climbing higher, while the powerful thrust curve ensures stable, straight liftoffs. When properly mounted and balanced, these engines support rockets weighing up to 21.0 oz and deliver the kind of performance that keeps you coming back to the launch pad. The F15-2 Engines are also a great value, combining high performance with consistency you can trust flight after flight. They’re a great choice for larger model rockets, club launch days, and experienced hobbyists looking for stronger lift and longer burn time. You’ll get strong ignition, reliable ejection, and clean recovery timing every time, so you can focus on enjoying the experience instead of troubleshooting. This pack inclu\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10009\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10009\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642114872,"sku":"EST10009","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/F15-2-Model-Rocket-Engines-Package.png?v=1790553153"},{"product_id":"estes-1-4a3-3t-engines-10010","title":"Estes 1\/4A3-3T Engines #10010","description":"\u003cp\u003e\u003cstrong\u003eEstes 1\/4A3-3T Engines #10010\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes 1\/4A3-3T engine is a compact single stage engine designed specifically for lightweight model rockets. This 4 pack gives hobbyists a convenient bundle that includes everything needed to power four quick flights, including engines, starters, and starter plugs, all in one purchase. What makes these mini engines great is their consistency. The 1\/4A3-3T is engineered to produce steady, repeatable thrust so each flight behaves the way you expect. That reliability is ideal for new flyers learning the basics, for group events where predictable performance matters, and for experienced builders who want a small engine with dependable results. Despite its small size, this engine delivers real performance with a total impulse of 0.625 N-sec and a 3 second delay for reliable deployment timing. The short burn and low weight make it perfect for delicate airframes and foam or balsa builds wher\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10010\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642147640,"sku":"EST10010","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010010-1-4-A3-3T-Model-Rocket-Engines-Package.png?v=1790553155"},{"product_id":"estes-1-2a3-2t-engines-10011","title":"Estes 1\/2A3-2T Engines #10011","description":"\u003cp\u003e\u003cstrong\u003eEstes 1\/2A3-2T Engines #10011\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes 1\/2A3‑2T engine is a single-stage mini engine designed specifically for lightweight model rockets, especially those built on BT-5 (13 mm) airframes. Ideal for backyard launches or small-field use, this engine delivers a dependable lift-off experience for smaller, beginner rockets. Each pack includes four motors, four igniters, and four starter plugs, ready for multiple launches right out of the box. Offering a total impulse of 1.25 N‑s, peak thrust of approximately 8.3 N (1.9 lb), and a short thrust duration of 0.30 s, the 1\/2A3‑2T provides a quick and spirited liftoff without overtaxing lightweight models. Following burnout, a 2-second delay gives your rocket time to coast to apogee before deploying its recovery system, minimizing stress on both rocket and engine. Compact yet powerful, this 13 mm engine measures 1.75″ in length, weighs just 0.23 oz (6.5 g), and contains 0.07 o\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10011\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10011\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642180408,"sku":"EST10011","price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010011-1-2-A3-2T-Bag.png?v=1790553156"},{"product_id":"estes-a3-2t-engines-10012","title":"Estes A3-2T Engines #10012","description":"\u003cp\u003e\u003cstrong\u003eEstes A3-2T Engines #10012\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes A3-2T mini engine delivers a neat balance of gentle power and a short, dependable delay. This 13mm motor produces a crisp boost that carries very light rockets to their peak quickly, then times a 2 second coast for a clean transition to recovery. It is ideal for models that weigh up to the mini engine limits and for flyers who want satisfying altitude without complex setup. What makes the A3-2T stand out is its consistency and user friendly performance. Expect reliable starts, predictable thrust duration, and repeatable delays so you can focus on building, flying, and enjoying recovery. These engines are made to the same quality standards Estes flyers count on, so you get dependable results whether you are teaching a newcomer or polishing a weekend launch routine. The A3-2T works with a wide range of our mini kits including Star Hopper, The Gnome, The Firestreak, Gryphon, Mini\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10012\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10012\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642213176,"sku":"EST10012","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010012-A3-2T-Rocket-Engines.png?v=1790553157"},{"product_id":"estes-a3-4t-engines-10013","title":"Estes A3-4T Engines #10013","description":"\u003cp\u003e\u003cstrong\u003eEstes A3-4T Engines #10013\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes A3-4T engine is a single-stage mini model rocket engine built for lightweight rockets and designed to deliver consistent, reliable performance. With a total impulse of 2.50 N-sec and a peak thrust of 6.80 newtons (1.5 lbs), this 13 mm diameter engine provides a solid boost for rockets weighing up to 2.0 ounces (57 g). Its 4-second delay allows for a steady coast before the ejection charge activates, helping ensure a controlled flight and dependable recovery system deployment. With a thrust duration of 0.60 seconds, the A3-4T delivers a quick, moderate-power lift-off that’s ideal for rockets requiring a longer delay before ejection. Whether you're launching a favorite kit or testing a new build, the A3-4T supplies reliable thrust and timing that supports a predictable flight path, perfect for hobbyists looking for dependable performance from a mini engine. Each engine pack inclu\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10013\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10013\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642245944,"sku":"EST10013","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010013-A3-4T-Bag.png?v=1790553159"},{"product_id":"estes-a3-6t-engines-10014","title":"Estes A3-6T Engines #10014","description":"\u003cp\u003e\u003cstrong\u003eEstes A3-6T Engines #10014\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eExperience better sight lines and a calmer recovery with the Estes A3-6T mini rocket engine. This 13mm motor is tuned to deliver a short, energetic boost followed by a six second delay, so your model reaches its highest point and then pauses before the recovery system activates. The result is a cleaner, more dramatic flight that is easy to track from the ground. What makes the A3-6T stand out is its consistency. Estes engines are manufactured and tested to provide repeatable thrust curves and predictable delay times, which means fewer surprises on launch day and more confidence when flying with friends or family. That steady performance helps new flyers learn timing and recovery and gives experienced hobbyists the reliability they need to plan flights precisely. On the pad the A3-6T feels familiar and safe: a crisp ignition, a confident boost, and a gentle coast that showcases both altit\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10014\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10014\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642278712,"sku":"EST10014","price":12.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010014-A3-6T-Model-Rocket-Engines.png?v=1790553160"},{"product_id":"estes-a10-3t-engines-10015","title":"Estes A10-3T Engines #10015","description":"\u003cp\u003e\u003cstrong\u003eEstes A10-3T Engines #10015\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes A10-3T Engines are high-thrust mini engines built for exciting launches with lightweight model rockets. Designed as single-stage engines, they deliver quick and powerful liftoffs, making them a favorite for hobbyists who crave fast acceleration and short coast times. With a 3-second delay, these engines are great for rockets that are small, nimble, and engineered for quick altitude gains before deploying recovery systems. Known for their punchy performance in compact builds, the A10-3T offers a perfect blend of speed, simplicity, and fun. Its 13.00 Newton max thrust provides plenty of power for light rockets, while the 0.80-second thrust duration keeps flights brisk and exhilarating. Whether you’re running test flights, experimenting with new designs, or just enjoying weekend launches, these engines provide reliable, consistent results that keep the countdowns coming. The A10-3\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10015\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10015\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642344248,"sku":"EST10015","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010015-A10-3T-Bag.png?v=1790553161"},{"product_id":"estes-1-2a6-2-engines-10016","title":"Estes 1\/2A6-2 Engines #10016","description":"\u003cp\u003e\u003cstrong\u003eEstes 1\/2A6-2 Engines #10016\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes 1\/2A6‑2 engine is a single-stage, standard 18 mm engine tailored for rockets weighing under 2 oz (57 g) including engine, perfect for lightweight beginner models and small-field flights. Each package includes three engines, four igniters, and four starter plugs, so you’re ready to launch multiple rockets straight out of the box. With a total impulse of 1.25 N‑s, a peak thrust of 8.90 N (2.0 lb), and a brief thrust duration of just 0.30 s, the 1\/2A6‑2 delivers smooth yet dependable lift-off for small-scale rockets. After engine burn-out, the 2-second delay allows the rocket to coast to apogee before ejection, producing a controlled and safe recovery without overstressing your model. Measuring 2.75″ in length and sized at 18 mm diameter, this engine complements a wide range of Estes beginner kits like Alpha III®, Hi‑Flier®, Wizard™, and Astron Constellation™, providing ideal perf\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10016\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10016\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642377016,"sku":"EST10016","price":11.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010016-1-2-A6-2-Bag.png?v=1790553163"},{"product_id":"estes-a8-3-engines-10017","title":"Estes A8-3 Engines #10017","description":"\u003cp\u003e\u003cstrong\u003eEstes A8-3 Engines #10017\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe A8-3 is one of Estes’ most popular engines, and for good reason. With a powerful yet manageable thrust profile, it’s designed to launch lightweight model rockets up to 500 feet. The 3-second delay allows the rocket to coast at apogee before deploying the recovery system, resulting in picture-perfect flights and gentle landings. This engine is ideal for use in smaller, single-stage rockets and offers a great introduction to model rocketry. Whether you're learning the basics or refining your skills, the A8-3 provides a reliable and predictable flight experience that helps build confidence with every launch. Each A8-3 engine is precision-manufactured for consistent performance, so you can trust it to deliver a thrilling liftoff and smooth recovery every time. It's an excellent option for schools, camps, STEM programs, or anyone seeking a safe and satisfying launch. The A8-3 three-pack i\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10017\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10017\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642409784,"sku":"EST10017","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010017-A8-3-Engines-Package.png?v=1790553164"},{"product_id":"estes-b4-2-engines-10018","title":"Estes B4-2 Engines #10018","description":"\u003cp\u003e\u003cstrong\u003eEstes B4-2 Engines #10018\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eEngineered for straightforward, repeatable performance, the Estes B4-2 provides the reliable thrust you want from a standard model rocket engine. Its balanced burn delivers predictable altitude and recovery timing, making it an ideal choice for beginners learning flight dynamics as well as experienced fliers who appreciate consistent results. What makes the B4-2 stand out is its combination of ease of use and dependable manufacturing quality. The casing and propellant formulation produce clean, steady thrust with consistent delay timing, which reduces variability between flights. That consistent performance helps you tune recovery systems, estimate apogee, and teach flight concepts with confidence. The B4-2 is versatile in application. Use it for small display flights, classroom demos, club launches, and friendly competitions where predictable, safe performance matters. Its size and impu\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10018\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10018\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642442552,"sku":"EST10018","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010018-B4-2-Rocket-Engines.png?v=1790553165"},{"product_id":"estes-b6-2-engines-10020","title":"Estes B6-2 Engines #10020","description":"\u003cp\u003e\u003cstrong\u003eEstes B6-2 Engines #10020\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes B6-2 is a standard single-stage model rocket engine engineered for reliable, repeatable flight performance. Delivering a total impulse of 5.00 N-sec and a peak thrust of 12.10 newtons (2.7 lbs), this 18 mm diameter engine provides a strong boost phase, making it ideal for rockets with a maximum lift weight of 4.5 ounces (127 g). The 2-second delay allows for a controlled coast phase before activating the ejection charge, helping ensure stable recovery deployment and consistent flight profiles. With a thrust duration of 0.80 seconds, the B6-2 supplies a quick and powerful liftoff that suits rockets designed for lower altitude flights or those requiring early deployment. This engine is an excellent match for kits where a shorter delay improves flight stability and recovery system timing. Whether used for test flights or routine launches, the B6-2 delivers the dependable thrust cu\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10020\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10020\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642475320,"sku":"EST10020","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010020-B6-2-Bag.png?v=1790553167"},{"product_id":"estes-b6-4-engines-10021","title":"Estes B6-4 Engines #10021","description":"\u003cp\u003e\u003cstrong\u003eEstes B6-4 Engines #10021\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe B6-4 is a widely trusted and well-balanced engine that offers reliable performance across a variety of model rocket kits. With a moderate level of thrust and a 4-second delay, it allows rockets to coast effectively before activating the recovery system, making it ideal for rockets that benefit from a longer delay phase after burnout. Designed for single-stage rockets weighing less than 4.0 ounces, the B6-4 engine delivers consistent results and controlled recoveries, making it a great fit for both new flyers refining their skills and seasoned hobbyists looking for dependable flight profiles. Whether you're launching for fun or using rockets in a STEM learning environment, the B6-4 engine provides an excellent combination of power, altitude, and control. Its predictable performance has made it a go-to for generations of rocketeers. Each 3-pack includes everything you need for multiple\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10021\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642508088,"sku":"EST10021","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010021-B6-4-Engines-Package.png?v=1790553169"},{"product_id":"estes-c5-3-engines-10022","title":"Estes C5-3 Engines #10022","description":"\u003cp\u003e\u003cstrong\u003eEstes C5-3 Engines #10022\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eWhen your rocket needs a fast, steady boost and an earlier recovery, the Estes C5-3 engine delivers. With a total impulse of 10.00 N-sec and a thrust duration of 1.85 seconds, this 18 mm engine is engineered to provide a longer, sustained push off the launch pad, making it a strong match for mid-weight rockets and high-drag designs. The 3-second delay ensures timely recovery system deployment, which is especially important for rockets with a max lift weight of up to 8.0 oz. That shorter delay window minimizes coast time and helps deploy parachutes earlier in the flight arc, leading to safer, more predictable landings; perfect for designs that don't benefit from long coasts or for flying in variable wind conditions. Each pack contains 3 C5-3 engines, 4 starters, and 4 starter plugs, giving you everything you need to prep for multiple launches. Just add your recovery wadding, launch pad, a\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10022\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10022\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642540856,"sku":"EST10022","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010022-C5-3-Bag.png?v=1790553170"},{"product_id":"estes-c6-5-engines-10024","title":"Estes C6-5 Engines #10024","description":"\u003cp\u003e\u003cstrong\u003eEstes C6-5 Engines #10024\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes C6‑5 engine is a single-stage, 18 mm standard engine crafted for rockets weighing less than 4 oz (113 g) including the motor. Perfect for mid-sized beginner and intermediate rockets, it offers a powerful yet controlled flight experience. Each pack includes three C6‑5 engines, four igniters, and four starter plugs, making it easy to launch multiple rockets with minimal prep. This engine delivers a total impulse of 10 N‑s, a sustained average thrust of 15.3 N (3.4 lb), and a burn duration of approximately 1.6 seconds—ideal for achieving moderate altitude lift-offs. With a 5‑second delay between burnout and ejection, it gives rockets ample time to coast to apogee for smooth recovery system deployment. Measuring 2.8″ long and 18 mm in diameter, the C6‑5 fits a wide range of Estes rockets like Antar™, Big Bertha®, AstroCam®, and Alpha III®. Weighing just 0.85 oz (24.1 g) with 0.43 o\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10024\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642573624,"sku":"EST10024","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010024-C6-5-Bag.png?v=1790553170"},{"product_id":"estes-c11-3-engines-10025","title":"Estes C11-3 Engines #10025","description":"\u003cp\u003e\u003cstrong\u003eEstes C11-3 Engines #10025\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003ePower your mid-sized model rockets with confidence using the Estes C11-3 Engines. These powerful motors are designed for launches that require more thrust than a standard B engine but don’t need the altitude of a D-class engine. With a total impulse of 10.00 N·s, the C11-3 provides reliable, solid acceleration and a controlled 3-second delay before ejection, ideal for rockets with larger airframes or heavier payloads. The 3-second delay gives rockets just enough time to reach peak altitude before deploying the recovery system, ensuring safe and consistent descents. Perfect for mid-weight kits or scale models, the C11-3 bridges the gap between lower and higher power flights, making it a versatile choice for rocketeers looking to optimize performance without overshooting field constraints. Each pack includes 2 C11-3 engines, along with 2 starters and 4 starter plugs, so you’re ready for mu\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10025\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10025\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642639160,"sku":"EST10025","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/C11-3-Engines-010025.png?v=1790553171"},{"product_id":"estes-c11-5-engines-10026","title":"Estes C11-5 Engines #10026","description":"\u003cp\u003e\u003cstrong\u003eEstes C11-5 Engines #10026\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes C11-5 engine delivers a powerful punch for mid-weight rockets ready to soar. This single-stage engine features a 24 mm diameter and 10.00 N-sec of total impulse, making it a reliable choice for modelers looking for extra lift without moving up to E-class engines. Whether you're launching for altitude or demonstrating flight consistency, the C11-5 offers performance you can count on. With a 5-second delay, the C11-5 strikes a great balance between boost and recovery deployment, ideal for rockets that require more coast time to maximize altitude before ejection. It delivers up to 22.10 newtons of max thrust, giving your rocket the force it needs to get off the pad with authority. The C11-5’s power and profile make it a perfect fit for rockets that are too heavy for a B or C6 but not quite ready for an E engine. The engine’s 0.80-second thrust duration ensures a quick and responsi\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10026\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10026\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642671928,"sku":"EST10026","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010026-C11-5-Bag.png?v=1790553173"},{"product_id":"estes-d12-3-engines-10027","title":"Estes D12-3 Engines #10027","description":"\u003cp\u003e\u003cstrong\u003eEstes D12-3 Engines #10027\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes D12-3 engine delivers high-thrust power for heavier model rockets that require a shorter delay before deployment. Ideal for larger, draggy airframes or rockets with broad fins, this engine provides the force needed to achieve stable, safe flights from liftoff to recovery. With its balanced 3-second delay, the D12-3 is engineered for rockets that need their recovery systems to activate shortly after peak altitude, helping prevent tumble or drift. As part of the D engine family, the D12-3 is known for its punchy boost and reliability, making it a solid choice for rockets designed with extra weight or staging complexity. Whether you're flying a single-stage rocket that needs a quick deployment or experimenting with payloads, this engine offers a dependable performance profile that hobbyists trust. Each pack includes two D12-3 engines, along with two starters and four starter plugs\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10027\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10027\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642704696,"sku":"EST10027","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010027-D12-3-Bag.png?v=1790553174"},{"product_id":"estes-d12-5-engines-10028","title":"Estes D12-5 Engines #10028","description":"\u003cp\u003e\u003cstrong\u003eEstes D12-5 Engines #10028\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes D12-5 engine is a high-thrust motor built for model rockets that need strong liftoff power and a longer coast before deploying their recovery system. With a 5-second delay between engine burnout and ejection, it gives your rocket extra time to climb before the parachute or other recovery method activates—perfect for heavier rockets or those designed for extended flights. This engine is a great match for a variety of Estes kits and custom builds that support D-engine power. Whether you're flying a single-stage rocket or the upper stage of a multi-stage setup, the D12-5 delivers reliable, consistent performance with every launch. The longer delay helps improve flight stability and timing, giving your rocket a smoother arc and more controlled descent. Each package includes two D12-5 engines, two starters, and four starter plugs. You’ll have what you need to get your rocket ready f\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10028\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10028\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642737464,"sku":"EST10028","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010028-D12-5-Bag.png?v=1790553175"},{"product_id":"estes-e12-6-engines-10030","title":"Estes E12-6 Engines #10030","description":"\u003cp\u003e\u003cstrong\u003eEstes E12-6 Engines #10030\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes E12-6 engine is a high-thrust workhorse designed for mid- to large-sized model rockets. With a powerful boost and a 6-second delay, it’s perfect for flights where altitude and performance matter most. This engine is ideal for heavier rockets that need extra force off the launch pad while still ensuring safe and timely recovery system deployment. Capable of lifting rockets weighing up to 14 ounces, the E12-6 provides reliable, sustained thrust for models that require extended coasting before ejection. The longer delay makes it especially well-suited for rockets with sleek, efficient designs that benefit from more time to climb after burnout. Whether you're flying a Pro Series II rocket or another advanced model, the E12-6 delivers dependable, high-altitude flights. Each package includes 2 engines, 2 igniters, and 4 reusable starter plugs, giving you everything you need for two f\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10030\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10030\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642770232,"sku":"EST10030","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010030-E12-6-Bag.png?v=1790553177"},{"product_id":"estes-f15-6-engines-29-mm-10032","title":"Estes F15-6 Engines (29 mm) #10032","description":"\u003cp\u003e\u003cstrong\u003eEstes F15-6 Engines (29 mm) #10032\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eTake your mid-powered rocket flights to new heights with the Estes F15-6 Engine. This 29 mm engine packs an impressive 49.61 N-sec total impulse and delivers a maximum thrust of 25.26 Newtons, giving your rockets the boost they need for strong, stable launches. It’s ideal for experienced modelers looking for consistent, long-duration thrust and reliable performance across a wide variety of heavier rocket designs. With a 6-second delay between burnout and recovery deployment, the F15-6 is tailored for mid-size rockets that benefit from longer coast phases. This extended delay allows rockets to climb to higher altitudes before the ejection charge activates, maximizing performance in rockets with slightly heavier payloads or larger airframes. The 3.45-second burn time provides a smooth and powerful push, enhancing flight dynamics and altitude potential. At 4.5 inches in length and weighing\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10032\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10032\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642803000,"sku":"EST10032","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/EstesF15-6Engines.png?v=1790553179"},{"product_id":"estes-e16-4-engines-29-mm-10033","title":"Estes E16-4 Engines (29 mm) #10033","description":"\u003cp\u003e\u003cstrong\u003eEstes E16-4 Engines (29 mm) #10033\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe E16-4 Engines (29 mm) by Estes Rockets deliver powerful and reliable performance for mid to high-powered model rockets. Ideal for single-stage flights or upper stages of multi-stage designs, these engines provide an impressive total impulse of 33.68 N-sec and a 4-second delay for optimal parachute deployment. Whether you're launching larger rockets or experimenting with advanced models, the E16-4 is the perfect choice for rocketeers seeking precision and altitude. Designed for rockets weighing up to 20 ounces (566 grams), the E16-4 engine ensures smooth and consistent thrust, lifting your rocket to incredible heights. Each package includes two engines, two starters, and four starter plugs, making it easy to prepare for multiple launches. Whether you're an advanced hobbyist or looking to expand your fleet with higher-performance options, the E16-4 offers a dependable and exhilarating\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10033\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10033\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642835768,"sku":"EST10033","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010033-E16-4--Rocket-Engines-Bag.png?v=1790553180"},{"product_id":"estes-e16-6-engines-29-mm-10034","title":"Estes E16-6 Engines (29 mm) #10034","description":"\u003cp\u003e\u003cstrong\u003eEstes E16-6 Engines (29 mm) #10034\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe E16-6 Engine (29 mm) is a high-performance model rocket engine designed for single-stage rockets or as the upper stage in multi-stage configurations. With a total impulse of 33.68 N-sec and a 6-second delay, this engine is perfect for larger rockets needing a powerful and reliable boost. Ideal for advanced rocketeers, the E16-6 engine ensures smooth flights and precise parachute deployment for a safe and exciting recovery. Each package includes two engines, two starters, and four starter plugs, giving you everything needed for two launches. With the ability to lift rockets weighing up to 16 ounces (453 grams) to impressive altitudes, the E16-6 delivers reliable performance and exhilarating results. Whether you're flying rockets like the Pro Series II™ Majestic™ or experimenting with custom designs, this engine offers the thrust you need to elevate your rocketry experience. With its r\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10034\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10034\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642868536,"sku":"EST10034","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010034-E16-6-Bag.png?v=1790553181"},{"product_id":"estes-1-2a3-4t-engines-10035","title":"Estes 1\/2A3-4T Engines #10035","description":"\u003cp\u003e\u003cstrong\u003eEstes 1\/2A3-4T Engines #10035\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes 1\/2A3-4T engine is a dependable choice for launching lightweight model rockets. Designed as a mini engine with a 13 mm diameter, it delivers a total impulse of 1.25 N-sec and a peak thrust of 8.3 newtons. This quick-thrust, single-stage engine is ideal for smaller rockets that weigh up to 1.0 ounce at liftoff, giving them a powerful and reliable start to flight. With a time delay of 4 seconds before ejection, it allows for stable coasting and safe deployment of recovery systems. Built with precision for modelers who value consistency, the 1\/2A3-4T features a compact size of just 1.8 inches in length and weighs only 0.23 ounces. Despite its small stature, it packs a sharp burst of thrust lasting 0.3 seconds, perfect for short, fast flights in light rocket models. The engine’s performance is tuned to work with Estes’ mini engine-powered kits, providing dependable launches every t\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10035\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10035\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642901304,"sku":"EST10035","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010035-1-2-A3-4T-Bag.png?v=1790553183"},{"product_id":"estes-a8-5-engines-10036","title":"Estes A8-5 Engines #10036","description":"\u003cp\u003e\u003cstrong\u003eEstes A8-5 Engines #10036\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes A8-5 Engine is a lightweight, high-performance motor designed for small rockets and upper-stage missions. With a maximum lift weight of 2.0 ounces and a peak thrust of 10.7 newtons, it delivers strong, stable acceleration for reliable flights. The -5 second delay is optimized for rockets that benefit from a longer coast phase before deploying their recovery systems, enabling smooth altitude transitions and gentle descents. Ideal for both single-stage and multi-stage builds, the A8-5's longer delay allows your rocket to arc and slow after burnout before activating the ejection charge. This helps protect the recovery system and contributes to a more controlled return. Its compatibility with a wide range of Estes kits makes it a flexible and dependable option for hobbyists, educators, and students alike. This standard 18 mm engine is easy to install and works seamlessly with many\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10036\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10036\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642934072,"sku":"EST10036","price":12.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010036-A8-5-Bag.png?v=1790553183"},{"product_id":"estes-b6-6-engines-10037","title":"Estes B6-6 Engines #10037","description":"\u003cp\u003e\u003cstrong\u003eEstes B6-6 Engines #10037\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes B6-6 engine is a high-performance upper stage engine designed for serious altitude seekers. With a 6-second delay, it’s built to let your rocket coast higher before activating the recovery system, perfect for two-stage builds that need just the right timing to reach peak performance. It also works well in lighter single-stage rockets, making it a flexible addition to your engine stockpile. Delivering a total impulse of 5.00 N-sec and a maximum thrust of 12.10 Newtons, the B6-6 balances impressive power with reliable performance. Its 0.80-second thrust duration gives your rocket the strong start it needs to clear the launch pad with authority before transitioning to a long coast phase. Whether you're experimenting with staging or optimizing for altitude, this engine gives you control and consistency. Weighing just 0.64 oz (18.1 g) and measuring 2.8 inches long, the B6-6 fits all\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10037\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10037\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642966840,"sku":"EST10037","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010037-B6-6-Bag.png?v=1790553184"},{"product_id":"estes-c6-7-engines-10038","title":"Estes C6-7 Engines #10038","description":"\u003cp\u003e\u003cstrong\u003eEstes C6-7 Engines #10038\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes C6-7 model rocket engine is a powerful, high-thrust motor designed for upper-stage flights and lightweight, single-stage rockets. As a standard 18mm engine, the C6-7 provides a strong 1.6-second burn time, delivering consistent acceleration to propel rockets to impressive altitudes. With a 7-second delay before parachute deployment, this engine is ideal for rockets that require an extended coasting phase to reach peak altitude before safely descending. With a total impulse of 10.00 Newton-seconds and a maximum thrust of 15.30 Newtons (3.4 lbs), the C6-7 is perfect for rockets weighing up to 2.5 ounces (71 g). The extended delay time ensures that the rocket reaches its full trajectory before the recovery system is deployed, providing a smooth and controlled descent. This engine is best suited for lightweight model rockets designed to take advantage of its extended coast time and\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10038\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10038\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046642999608,"sku":"EST10038","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010038-C6-7-Engines-Bag.png?v=1790553186"},{"product_id":"estes-c11-7-engines-10039","title":"Estes C11-7 Engines #10039","description":"\u003cp\u003e\u003cstrong\u003eEstes C11-7 Engines #10039\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes C11-7 engine is a powerful 24 mm single-stage engine built for reliable mid-power model rocket flights. With a total impulse of 10.00 N-sec and a maximum thrust of 22.10 newtons, this engine is well-suited for rockets weighing less than 4 ounces. Its longer 7-second delay provides ample coast time, making it a solid choice for streamlined rockets where altitude and tracking visibility are key. Whether you're flying for altitude, duration, or precise deployment, the C11-7 provides consistent and dependable performance. Designed to bridge the gap between standard and higher-thrust engines, the C11-7 offers a unique combination of power and control. The 0.80-second thrust duration delivers a strong, quick boost to clear the launch rod, while the extended coast phase allows parachute deployment at higher altitudes. This engine works especially well in lightweight rockets needing th\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10039\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10039\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643032376,"sku":"EST10039","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010039-C11-7-Bag.png?v=1790553187"},{"product_id":"estes-d12-7-engines-10040","title":"Estes D12-7 Engines #10040","description":"\u003cp\u003e\u003cstrong\u003eEstes D12-7 Engines #10040\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes D12-7 model rocket engine is a powerful 24mm diameter motor designed to elevate your rocketry experience. Ideal for single-stage rockets weighing less than 8 ounces (226 grams), this engine delivers impressive thrust and altitude capabilities. Each pack includes two engines, two starters, and four starter plugs, providing everything you need for multiple exhilarating launches. With a total impulse of 20.00 Newton-seconds and a burn time of approximately 1.6 seconds, the D12-7 offers robust performance for your model rockets. The 7-second delay between thrust and parachute deployment allows rockets to reach optimal altitude before initiating a safe descent. This delay is particularly suitable for lightweight rockets designed for high-altitude flights. Measuring 70 mm in length and 24 mm in diameter, the D12-7 engines are compatible with a wide range of rocket kits. Its maximum l\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10040\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10040\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643065144,"sku":"EST10040","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010040-D12-7-Bag.png?v=1790553188"},{"product_id":"estes-e12-8-engines-10041","title":"Estes E12-8 Engines #10041","description":"\u003cp\u003e\u003cstrong\u003eEstes E12-8 Engines #10041\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eFor model rocketeers looking to push performance to the edge of the atmosphere, the Estes E12-8 engines deliver powerful thrust and long-delay timing for high-altitude, precision flights. These engines are engineered for rockets weighing up to 12.0 oz, making them ideal for lightweight, streamlined designs that aim for maximum elevation. With a strong initial boost and an 8-second delay before ejection, the E12-8 is purpose-built for upper-stage use or flights that require extended coast times. The 8-second delay allows your rocket to reach its peak trajectory before deploying its recovery system, ensuring smooth and efficient descent. This extended coast phase is especially effective for rockets designed to take advantage of high-speed, high-altitude performance. Compatible with standard 24 mm engine mounts, the E12-8 opens up a wide range of flight possibilities for advanced single-sta\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10041\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10041\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643097912,"sku":"EST10041","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010041-E12-8-Bag.png?v=1790553190"},{"product_id":"estes-f15-8-engines-29-mm-10042","title":"Estes F15-8 Engines (29 mm) #10042","description":"\u003cp\u003e\u003cstrong\u003eEstes F15-8 Engines (29 mm) #10042\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eTake your model rocketry to the next level with the Estes F15-8 engine, a powerful choice for single-stage rockets that need long-duration thrust and a delayed recovery system deployment. This engine is designed for impressive altitude and high-performance launches, making it a favorite among seasoned rocketeers and hobbyists pushing the limits of what their rockets can do. With its extended 3.45-second thrust duration and robust 29 mm diameter casing, the F15-8 is ideal for rockets that need a sustained boost phase. The 8-second delay gives your rocket time to coast and stabilize after burnout, ensuring smoother deployments and potentially higher peak altitudes. It’s particularly well-suited for heavier or drag-intensive models that require a longer burn and post-thrust coasting phase before recovery activation. Made with high-quality composite propellant, the F15-8 delivers 49.61 N-sec\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10042\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10042\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643130680,"sku":"EST10042","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010042-F15-8-Model-Rocket-Engines.png?v=1790553191"},{"product_id":"estes-e16-8-engines-29-mm-10043","title":"Estes E16-8 Engines (29 mm) #10043","description":"\u003cp\u003e\u003cstrong\u003eEstes E16-8 Engines (29 mm) #10043\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe E16-8 Engine (29 mm) is a powerful and versatile model rocket engine designed for single-stage and upper-stage flights. With a total impulse of 33.68 N-sec and an 8-second delay, this engine is ideal for rockets requiring a longer coast phase before parachute deployment. Perfect for advanced rocketeers, the E16-8 delivers smooth and reliable performance for thrilling, high-altitude flights. Capable of lifting rockets weighing up to 14 ounces (396 grams) to impressive heights, the E16-8 engine provides a robust thrust of 26.44 Newtons over a 2.09-second burn time. Each pack includes two engines, two starters, and four starter plugs, giving you everything needed for multiple exciting launches. Whether you’re launching a single-stage rocket or adding it to a multi-stage design, the E16-8 offers precision and reliability for your rocketry adventures. Whether you’re chasing high-altitude\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10043\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10043\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643163448,"sku":"EST10043","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010043-E16-8-Model-Rocket-Engines.png?v=1790553193"},{"product_id":"estes-a10-0t-engines-10044","title":"Estes A10-0T Engines #10044","description":"\u003cp\u003e\u003cstrong\u003eEstes A10-0T Engines #10044\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eEngineered for clean, dependable staging, the Estes A10-0T is a 13 mm booster engine made to work with compatible mini engines. With a total impulse of 2.50 N-sec and a short, snappy 0.80 second burn, this booster gives lightweight rockets a confident push off the pad while keeping flight behavior predictable and repeatable. Its compact size and low mass make it ideal for small two stage rockets and projects where precise, gentle staging matters. What makes the A10-0T stand out is consistency. These motors are manufactured to tight tolerances so each flight feels familiar, which helps you learn faster and tune builds with confidence. The thrust profile gives a quick, reliable boost that separates stages cleanly without overstressing small airframes. That predictable performance also makes the A10-0T a great choice for hobbyists who like experimenting with staged designs and for families\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10044\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10044\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643196216,"sku":"EST10044","price":11.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010044-A10-0T-Booster-Rocket-Engines.png?v=1790553194"},{"product_id":"estes-a8-0-engines-10045","title":"Estes A8-0 Engines #10045","description":"\u003cp\u003e\u003cstrong\u003eEstes A8-0 Engines #10045\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes A8-0 booster engine is built for dependable, confidence-inspiring performance. As a standard 18 mm booster with a quick thrust profile, it is designed to give your lightweight rockets a reliable push during the initial phase of flight. Pilots who use the A8-0 appreciate its crisp ignition and steady output that make staging simple and rewarding. Beyond raw numbers, the A8-0 stands out for how predictable it is at the field. That predictability translates into cleaner flights, easier flight planning, and more consistent altitude results when you repeat the same setup. Whether you are launching at your neighborhood club, teaching a new flyer, or refining a multi stage rocket, this engine makes each launch feel controlled and enjoyable. Safety and ease of use are core to the A8-0 experience. The engine integrates seamlessly with standard Estes hardware and ignition systems, and it\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10045\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10045\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643360056,"sku":"EST10045","price":12.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010045-A8-0-Model-Rocket-Engines.png?v=1790553196"},{"product_id":"estes-b6-0-engines-10046","title":"Estes B6-0 Engines #10046","description":"\u003cp\u003e\u003cstrong\u003eEstes B6-0 Engines #10046\u003c\/strong\u003e is an Estes model rocket engine for powered model-rocket flight and launch-day use.\u003c\/p\u003e\u003cp\u003eThe Estes B6-0 booster engine is engineered specifically for two stage model rockets where a clean, dependable lift from the lower stage is critical. With a short, energetic thrust curve, the B6-0 gets your rocket to altitude and separates stages with authority while remaining easy to handle for backyard and club launches alike. It is sized for standard 18 mm motor mounts and is intended to be used in combination with a standard delayed or instant upper stage engine. What makes the B6-0 stand out is its consistency. You can expect the same ignition response and thrust profile from flight to flight which makes staging timing predictable and recovery planning simple. That predictable performance gives you confidence when testing new staging setups or when teaching others how two stage rockets operate. The B6-0 is repeatable, safe when used correctly, and a great engine for learning advance\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10046\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10046\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643392824,"sku":"EST10046","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010046-B6-0-Estes-Model-Rocket-Engines.png?v=1790553196"},{"product_id":"estes-c6-0-engines-10047","title":"Estes C6-0 Engines #10047","description":"\u003cp\u003e\u003cstrong\u003eEstes C6-0 Engines #10047\u003c\/strong\u003e is an Estes model rocket engine for model rocketry, launch-day use, and hobby programs.\u003c\/p\u003e\u003cp\u003eElevate your two-stage model rocket launches with the Estes C6-0 engine, a high-thrust booster designed to kickstart thrilling flights with power and precision. This is a zero-delay engine built to deliver an immediate and forceful lift-off, pushing your rocket through the first stage of its ascent with unmatched reliability. What sets the C6-0 apart is its balanced combination of thrust and burn time. With 1.60 seconds of sustained thrust and a total impulse of 10.00 N-sec, this engine provides a controlled yet powerful boost that’s perfect for rockets under 4 ounces. It’s engineered to integrate seamlessly with standard upper-stage engines, ensuring smooth transitions and high-altitude results. Engineered for performance, the C6-0 gives rocketeers the ability to explore multi-stage flight without compromising safety or control. Whether you’re experimenting with altitude or testing stag\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10047\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10047\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643425592,"sku":"EST10047","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010047-C6-0-Bag.png?v=1790553198"},{"product_id":"estes-c11-0-engines-10048","title":"Estes C11-0 Engines #10048","description":"\u003cp\u003e\u003cstrong\u003eEstes C11-0 Engines #10048\u003c\/strong\u003e is an Estes model rocket engine for model rocketry, launch-day use, and hobby programs.\u003c\/p\u003e\u003cp\u003ePower your two stage flights with the Estes C11-0 booster engine. Built for dependable, high thrust performance in lightweight rockets, this booster is ideal for hobbyists who want clean, repeatable staging and confident launches for rockets under 6 ounces including the engines. Designed for rocketeers who value consistency and ease of use, the C11-0 delivers a strong, short burst of thrust that helps heavier second stages get clear of the launch rail fast and true. Its steady, well controlled burn and precise manufacturing mean predictable flights you can plan around, whether you are flying alone in the backyard or at a club launch. Each pack is sized for convenience and immediate use. With robust peak thrust and a compact 24 mm form factor, the C11-0 pairs perfectly with standard 24 mm Estes engines to form reliable two stage combinations that reach higher altitudes without extra fuss.\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10048\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10048\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643458360,"sku":"EST10048","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010048-C11-0-Rocket-Engines-Bag.png?v=1790553199"},{"product_id":"estes-d12-0-engines-10049","title":"Estes D12-0 Engines #10049","description":"\u003cp\u003e\u003cstrong\u003eEstes D12-0 Engines #10049\u003c\/strong\u003e is an Estes model rocket engine for model rocketry, launch-day use, and hobby programs.\u003c\/p\u003e\u003cp\u003eThe Estes D12-0 is a booster-stage model rocket engine designed to provide powerful thrust for multi-stage rocket launches. Measuring 2.75 inches (7 cm) in length and 24 mm in diameter, this engine is compatible with a wide range of rocket designs. Each package includes two engines, two starters, and four starter plugs, ensuring you have the essentials for multiple launch sequences. With a total impulse of 20.00 Newton-seconds and a thrust duration of approximately 1.6 seconds, the D12-0 delivers robust performance to propel rockets weighing up to 14 ounces (396 grams) during the initial boost phase. It's important to note that this engine features no time delay or ejection charge, making it specifically suited for the booster stage in multi-stage rockets. The D12-0 engine achieves a maximum thrust of 32.90 Newtons (7.4 pounds), providing the necessary power to launch heavier rockets eff\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10049\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10049\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643589432,"sku":"EST10049","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010049-D12-0-Bag.png?v=1790553200"},{"product_id":"estes-f15-0-engines-29-mm-10051","title":"Estes F15-0 Engines (29 mm) #10051","description":"\u003cp\u003e\u003cstrong\u003eEstes F15-0 Engines (29 mm) #10051\u003c\/strong\u003e is an Estes model rocket engine for model rocketry, launch-day use, and hobby programs.\u003c\/p\u003e\u003cp\u003eThe Estes F15-0 engine is a powerful booster stage engine designed to take your multi-stage rockets to impressive altitudes. With a long thrust duration and no delay, this engine delivers continuous power from ignition until burnout, perfect for staging to an upper engine for continued flight. It’s a 29 mm engine that packs a punch, ideal for larger models and ambitious rocketeers looking for high-thrust launches and extended performance. What sets the F15-0 apart is its exceptional thrust duration of 3.45 seconds, providing sustained lift and helping rockets gain serious altitude before the second stage kicks in. The engine’s high total impulse and maximum thrust of 25.26 Newtons make it a reliable choice for boosting heavier rockets without sacrificing speed or stability. Whether you're flying for fun or competition, the F15-0 helps deliver a dramatic and effective first-stage launch.\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 10051\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeartland item number:\u003c\/strong\u003e EST10051\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse only as directed by Estes and follow all package safety, age, launch-site, and supervision requirements.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046643622200,"sku":"EST10051","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010051-F15-0-Model-Rocket-Engines.png?v=1790553201"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/collections\/mm-model-rockets-collection-20260928.png?v=1790609723","url":"https:\/\/munclemikes.com\/collections\/model-rockets.oembed","provider":"Muncle Mikes","version":"1.0","type":"link"}