B6-4 Rocket Engines (24)

This is a 24 bulk pack of Estes B6-4 model rocket engines. Includes 24 engines, 30 igniters, and recovery wadding.

Estes B6-4 Rocket Engines (24) Model Rocket Engine Bulk Pack #1783
 Estes Rockets # est1783
Retail $89.99  SAVE 21% !
Estes Rockets Item # est1783
Specifications :
  • Length: 2 3/4"
  • Diameter: 3/4"
  • Estes Product Number: 1783
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Spotlight Review

"Great deal!"
The B6-4 is a great motor- Decent oomph for it's size, and it'll get a small rocket moving at a very affordable price point. In this bulk pack, it not only decreases the cost per motor, but also includes extra ignitors, and the all-important recovery wadding. This is specially treated paper to prevent your parachute or streamer from being burned. Between all of this, you end up saving quite a bit of money!

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  • B-Class model rocket engine 24 bulk pack.
  • 6 extra igniters included.
  • Wadding included.
  • Single stage model rocket motor.
  • Detailed instructions.
  • Easy to use.
  • National Association of Rocketry certified.


  • Length: 2 3/4"
  • Diameter: 3/4"
  • Estes Product Number: 1783


  • 24 B6-4 Model Rocket Engines
  • 30 Igniters
  • 24 Plugs
  • Wadding (est302274)

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"Perfect, as advertised. Great performance"
Spectacular launch, great reliability. Shot all 25 in one sitting. Scouts were so happy with the height and the show. Each engine performed well.

"Great Class Ending Project"
I teach Physical Science to 8th graders and we always end the year building, decorating and launching these rockets and engines as a celebration of all physical science has helped us achieve. The students love it, other grades come and watch launch day on the football field. Even the elementary students and teachers come over to watch the countdowns and get excited about science. It's a great way to end 8th grade and send them on to the high school.

"almost max altitude"
This works well on semi windy days. This makes it so it doesn't go to high and get caught in a cross wind.


  • WARNING: Model rocket motors are flammable. Please use caution.
  • Must be 14 to purchase in CA and NJ.
  • Do not burn engines.
  • Soak in water to destroy.

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