{"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","url":"https:\/\/munclemikes.com\/es\/products\/estes-b6-4-engines-10021","provider":"Muncle Mikes","version":"1.0","type":"link"}