{"title":"Estes B-Class Model Rocket Engines","description":"\u003cp\u003eShop verified Estes B-class model rocket engines by complete motor designation, delay, package type, and manufacturer part number. This focused page groups B4 and B6 options, including booster, delayed-ejection, and verified mixed-class packs that contain B motors.\u003c\/p\u003e\u003ch2\u003eUse the exact B motor approved for the rocket\u003c\/h2\u003e\u003cp\u003eThe B impulse class alone does not establish compatibility. Average thrust and delay affect the flight profile and recovery timing, while booster motors serve a different function from motors with an ejection delay. Check the exact rocket instructions and approved motor list before choosing a B4 or B6 designation.\u003c\/p\u003e\u003ch2\u003eCompare package and delay details\u003c\/h2\u003e\u003cp\u003eReview the full code, motor diameter, package quantity, and manufacturer part number on each listing. A B6-0, B6-2, B6-4, and B6-6 should not be treated as interchangeable simply because each begins with B6.\u003c\/p\u003e\u003cp\u003eBrowse all \u003ca href=\"\/collections\/estes-model-rocket-engines\"\u003eEstes model rocket engines\u003c\/a\u003e, compare \u003ca href=\"\/collections\/model-rocket-kits\"\u003emodel rocket kits\u003c\/a\u003e, or return to \u003ca href=\"\/collections\/model-rockets\"\u003ethe model rocket department\u003c\/a\u003e. Regulated-motor shipping limits may apply.\u003c\/p\u003e","products":[{"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 a three-pack of standard 18 mm single-stage model-rocket engines with a two-second delay.\u003c\/p\u003e\u003ch2\u003ePackage contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e3 Estes B4-2 engines\u003c\/li\u003e\n\u003cli\u003e4 starters\u003c\/li\u003e\n\u003cli\u003e4 starter plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eUse this motor only when the complete \u003cstrong\u003eB4-2\u003c\/strong\u003e designation appears in the current instructions for the exact rocket. The rocket, launch system, controller batteries and recovery wadding are not included.\u003c\/p\u003e\u003cp\u003eA physical delivery address is required. Carrier, service and destination restrictions can apply to model-rocket motors.\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-Plugs-Ignitors.jpg?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 a three-pack of standard 18 mm single-stage model-rocket engines with a two-second delay.\u003c\/p\u003e\u003ch2\u003ePackage contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e3 Estes B6-2 engines\u003c\/li\u003e\n\u003cli\u003e4 starters\u003c\/li\u003e\n\u003cli\u003e4 starter plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eUse this motor only when the complete \u003cstrong\u003eB6-2\u003c\/strong\u003e designation appears in the current instructions for the exact rocket. The rocket, launch system, controller batteries and recovery wadding are not included.\u003c\/p\u003e\u003cp\u003eA physical delivery address is required. Carrier, service and destination restrictions can apply.\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-Engines-Plugs-Ignitors.jpg?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 a three-pack of standard 18 mm single-stage model-rocket engines with a four-second delay.\u003c\/p\u003e\u003ch2\u003ePackage contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e3 Estes B6-4 engines\u003c\/li\u003e\n\u003cli\u003e4 starters\u003c\/li\u003e\n\u003cli\u003e4 starter plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eUse this motor only when the complete \u003cstrong\u003eB6-4\u003c\/strong\u003e designation appears in the current instructions for the exact rocket. The rocket, launch system, controller batteries and recovery wadding are not included.\u003c\/p\u003e\u003cp\u003eA physical delivery address is required. Carrier, service and destination restrictions can apply.\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-Plugs-Ignitors.jpg?v=1790553168"},{"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 a three-pack of standard 18 mm model-rocket engines with a six-second delay.\u003c\/p\u003e\u003ch2\u003ePackage contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e3 Estes B6-6 engines\u003c\/li\u003e\n\u003cli\u003e4 starters\u003c\/li\u003e\n\u003cli\u003e4 starter plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eUse this motor only when the complete \u003cstrong\u003eB6-6\u003c\/strong\u003e designation appears in the current instructions for the exact rocket or upper stage. The rocket, launch system, controller batteries and recovery wadding are not included.\u003c\/p\u003e\u003cp\u003eA physical delivery address is required. Carrier, service and destination restrictions can apply.\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-Engines-Plugs-Ignitors.jpg?v=1790553185"},{"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 a three-pack of standard 18 mm booster motors for exact-compatible staged model rockets.\u003c\/p\u003e\u003ch2\u003ePackage contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e3 Estes B6-0 booster engines\u003c\/li\u003e\n\u003cli\u003e4 starters\u003c\/li\u003e\n\u003cli\u003e4 starter plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBooster-only compatibility\u003c\/h2\u003e\u003cp\u003eThe B6-0 has no timed delay and is intended for the booster stage of a compatible staged rocket. Use it only when the exact current instructions list \u003cstrong\u003eB6-0\u003c\/strong\u003e and identify the approved upper-stage motor. The rocket, launch system, controller batteries and recovery supplies are not included.\u003c\/p\u003e\u003cp\u003eA physical delivery address is required. Carrier, service and destination restrictions can apply to model-rocket motors.\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-Rocket-Engines-Plugs-Ignitors.jpg?v=1790553196"},{"product_id":"estes-blast-off-engine-bulk-pack-1672","title":"Estes Blast-Off® Engine Bulk Pack #1672","description":"\u003cp\u003e\u003cstrong\u003eEstes Blast-Off® Engine Bulk Pack #1672\u003c\/strong\u003e is a 24-engine mixed flight-supply pack for classrooms, clubs, camps and repeat launch days.\u003c\/p\u003e\u003ch2\u003eVerified package contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e6 A8-3 engines\u003c\/li\u003e\n\u003cli\u003e6 B6-4 engines\u003c\/li\u003e\n\u003cli\u003e6 C6-3 engines\u003c\/li\u003e\n\u003cli\u003e6 C6-5 engines\u003c\/li\u003e\n\u003cli\u003e30 starters\u003c\/li\u003e\n\u003cli\u003e75 sheets of recovery wadding\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eComplete the launch system\u003c\/h2\u003e\u003cp\u003eThe pack does not include rockets, a launch pad, a launch controller or controller batteries. Match each complete motor designation to the current instructions for the exact rocket. A physical delivery address is required, and carrier, service or destination restrictions may apply to model-rocket motors.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046644408632,"sku":"EST1672","price":114.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/1672-Blast-Off-Engine-Bulk-Pack-1.jpg?v=1790553232"},{"product_id":"estes-b6-4-engine-bulk-pack-1783","title":"Estes B6-4 Engine Bulk Pack #1783","description":"\u003cp\u003e\u003cstrong\u003eEstes B6-4 Engine Bulk Pack #1783\u003c\/strong\u003e provides motors and launch consumables for 24 exact-compatible flights.\u003c\/p\u003e\u003ch2\u003ePackage contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e24 Estes B6-4 engines\u003c\/li\u003e\n\u003cli\u003e30 starters\u003c\/li\u003e\n\u003cli\u003e24 starter plugs\u003c\/li\u003e\n\u003cli\u003e75 squares of recovery wadding\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eUse a B6-4 only when the complete motor designation appears in the current instructions for the exact rocket. Rockets, launch equipment and controller batteries are not included.\u003c\/p\u003e\u003cp\u003eA physical delivery address is required. Carrier, service and destination restrictions can apply.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046644670776,"sku":"EST1783","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/1783-B6-4-Engine-Bulk-Pack.jpg?v=1790553243"},{"product_id":"estes-b6-0-b6-6-engine-bulk-pack-1784","title":"Estes B6-0\/B6-6 Engine Bulk Pack #1784","description":"\u003cp\u003e\u003cstrong\u003eEstes B6-0\/B6-6 Engine Bulk Pack #1784\u003c\/strong\u003e provides matched motors and consumables for 12 exact-compatible two-stage flights.\u003c\/p\u003e\u003ch2\u003ePackage contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e12 Estes B6-0 booster engines\u003c\/li\u003e\n\u003cli\u003e12 Estes B6-6 upper-stage engines\u003c\/li\u003e\n\u003cli\u003e30 starters\u003c\/li\u003e\n\u003cli\u003e24 starter plugs\u003c\/li\u003e\n\u003cli\u003e75 squares of recovery wadding\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eStaged-flight compatibility\u003c\/h2\u003e\u003cp\u003eUse this combination only when the current instructions for the exact two-stage rocket list both \u003cstrong\u003eB6-0\u003c\/strong\u003e for the booster and \u003cstrong\u003eB6-6\u003c\/strong\u003e for the upper stage. The package supports 12 two-stage flights, not 24 complete flights. Rockets, launch equipment and controller batteries are not included.\u003c\/p\u003e\u003cp\u003eA physical delivery address is required. Carrier, service and destination restrictions can apply to model-rocket motors.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53046644703544,"sku":"EST1784","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/1784-B6-0-B6-6-Engine-Bulk-Pack.jpg?v=1790553245"},{"product_id":"estes-b4-4-engines-est10019","title":"Estes B4-4 Engines #10019","description":"\u003cp\u003e\u003cstrong\u003eEstes B4-4 Engines #10019\u003c\/strong\u003e is a three-pack of standard 18 mm single-stage model-rocket engines with a four-second delay.\u003c\/p\u003e\u003ch2\u003ePackage contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e3 Estes B4-4 engines\u003c\/li\u003e\n\u003cli\u003e4 starters\u003c\/li\u003e\n\u003cli\u003e4 starter plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eUse this motor only when the complete \u003cstrong\u003eB4-4\u003c\/strong\u003e designation appears in the current instructions for the exact rocket. The rocket, launch system, controller batteries and recovery wadding are not included.\u003c\/p\u003e\u003cp\u003eA physical delivery address is required. Carrier, service and destination restrictions can apply to model-rocket motors.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":53052941664568,"sku":"EST10019","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/010019-B4-4-Bag_484fdad6-c2e4-42ae-a335-51134281c706.webp?v=1790762906"}],"url":"https:\/\/munclemikes.com\/collections\/estes-b-class-rocket-engines.oembed","provider":"Muncle Mikes","version":"1.0","type":"link"}