The Estes B6-4 Engine Flight Pack is a trusted staple for hobby shops, toy stores, and science centers looking to stock reliable mid-power rocket engines. With a total impulse of 5.00 N-sec and a 0.8-second thrust duration, this engine is an ideal fit for customers flying mid-weight rockets. Its 4-second delay makes it a versatile choice for a wide range of models and flight profiles, appealing to both beginners and experienced flyers alike.

Known for its consistent performance and dependable ejection timing, the B6-4 is a workhorse in the Estes engine lineup. Its ability to lift rockets up to 4.0 oz (113 g) makes it a go-to option for customers seeking repeatable success in their launches. For retailers, this means fewer returns, more customer satisfaction, and greater brand trust in every sale.

Each flight pack includes 3 engines, 4 starters, 4 starter plugs, and 12 sheets of recovery wadding—making it a ready-to-sell, all-in-one product that meets the needs of hobbyists and weekend flyers. The convenient packaging and clear labeling support easy merchandising and quick customer understanding at the shelf.

Stocking the B6-4 Engine Flight Pack means offering your customers a time-tested engine that delivers. With strong sell-through potential and broad model compatibility, it’s a smart addition to any retail assortment focused on hobby rockets and STEM engagement.

ATTENTION: Estes Industries, LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.