B6-4 Model Rocket Engines (3)

This is a B6-4 B-class single stage model rocket engine designed to launch model rockets

Estes B6-4 Model Rocket Engines (3) Standard Rocket Motor #1606
 Estes Rockets # est1606
Retail $11.99  SAVE 21% !
Estes Rockets Item # est1606
Specifications :
  • Length: 2 3/4"
  • Diameter: 3/4"
  • Estes Product Number: 1606
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Spotlight Review

"Best 18mm Motors"
The b6-4 engines will always light. They are good for fair sized fields and execelnts for 10 mph winds.

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  • B-class model rocket engine 3 pack.
  • 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: 1606


  • 3 B6-4 Model Rocket Engines
  • 3 Igniters
  • 3 Plugs

Requirements & Suggestions

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"Excellent when space is limited"
Very good engine if your field is too small for the C6-5. I prefer them over the B4-4 as they have more punch for a faster lift off the pad.

"The Old Standby"
This is my most launched motor of all time. I have never lost a rocket with it, and It gives awesome flights for most rockets that just go too high on Cs. I have never had a problem with the motor, and I like the longer burn vs an A This is a great motor!!!

"Great performance."
These rocket engines preformed great and will by again.


  • 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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