The Estes B6-4 engine is a single stage model rocket designed for flights in rockets weighing less than four ounces (including the engine).

This bulk pack comes with all the model rocket motor supplies that you need to launch 24 rockets. Included are 24 model rocket motors, 30 starters (igniters), 24 starter plugs, and 75 squares of recovery wadding.

• Diameter: 18.0000 mm
• Length: 70.0000 mm
• Propellant Weight: 5.6000 g
• Total Weight: 18.2200 g
• Average Thrust: 5.0330 N
• Peak Thrust: 12.1400 N
• Total Impulse: 4.3280 Ns
• Class: 73% B

Note: We are required to ship orders containing motors by surface mail. So, please plan on your order possibly taking a few days longer than normal to arrive if it contains motors.

Model rocket motors cannot be shipped outside the US.