Estes B6-4 Engine Bulk PackEstes model rocket engine bulk packs are available in four total impulse ranges: ‚½A (mini engine), A, B or C (standard engines). These packs may be used for the rocket bulk packs or other Estes rockets....

Estes A8-3 Engine Bulk Pack‚ An A8-3 engine is your best bet for students to launch their rockets and see the entire flight profile. Estes engine bulk packs are convenient and include everything your students need to prepare their rockets for...

Estes C6-5 Engine Bulk Pack Want to pack some real power? The C6-5 is your engine! This C engine is the highest impulse engine in a bulk pack. This engine will send students' rockets out of site! Estes engine bulk...

Estes B6-0/B6-6 Engine Bulk Pack This two engine combo pack is to be used with two stage rockets. The B6-0 is a booster engine that has no delay or ejection charge. The B6-6 is the upper stage engine. Estes engine...