18mm Diameter : JonRocket.com, Model Rocket Kits, Parts, Supplies, and Accessories

Estes

1/2A6-2 Motors (Package of 3)

The Estes 1/2A6-2 engine is a single-stage model rocket motor designed for use in rockets weighing less than two ounces (including the motor). Each...

$11.29 (Discounted. Price is Lower in Cart)

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Quest Aerospace

A3-4FJ Black Max Q-Jet Model Rocket Motors (Package of Two)

Quest's Q-Jet 18mm model rocket motors use an aerospace-grade composite propellant. Q-Jets generate a highly-visible exhaust plume and delay smoke...

$8.49

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Quest Aerospace

A3-6FJ Black Max Q-Jet Model Rocket Motors (Package of Two)

Quest's Q-Jet 18mm model rocket motors use an aerospace-grade composite propellant. Q-Jets generate a highly-visible exhaust plume and delay smoke...

$8.49

... more info

Estes

A8-0 Motors (Package of 3)

The Estes A8-0 engine is a booster stage model rocket motor. This engine is for flights in multi-stage rockets weighing less than four ounces...

$11.29 (Discounted. Price is Lower in Cart)

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Estes

A8-3 Motors (Package of 3)

The Estes A8-3 engine is a single-stage model rocket motor designed for use in rockets weighing less than three ounces (including the motor). Each...

$11.29 (Discounted. Price is Lower in Cart)

... more info

Estes

A8-5 Motors (Package of 3)

The Estes A8-5 engine is an upper stage model rocket motor. The A8-5 can also be used as a single stage motor in rockets weighing less than 5 ounces...

$11.29 (Discounted. Price is Lower in Cart)

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Estes

B4-2 Motors (Package of 3)

The Estes B4-2 engine is a single-stage model rocket motor designed for use in rockets weighing less than four ounces (including the motor). Each...

$11.99 (Discounted. Price is Lower in Cart)

... more info

Estes

B4-4 Motors (Package 3)

The Estes B4-4 engine is a single stage model rocket motor designed for flights in rockets weighing less than 3.5 ounces (including the engine). Each...

$11.99 (Discounted. Price is Lower in Cart)

... more info

Quest Aerospace

Sale

B4-4FJ Black Max Q-Jet Model Rocket Motors (Package of Two)

Quest's Q-Jet 18mm model rocket motors use an aerospace-grade composite propellant. Q-Jets generate a highly-visible exhaust plume and delay smoke...

$9.34 $6.07
35% off

... more info

Quest Aerospace

B4-6FJ Black Max Q-Jet Model Rocket Motors (Package of Two)

Quest's Q-Jet 18mm model rocket motors use an aerospace-grade composite propellant. Q-Jets generate a highly-visible exhaust plume and delay smoke...

$9.34

... more info

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