Consistent steady thrust: Ensures predictable and repeatable rocket launches for reliable results
Compact 13 mm size: Perfect for small, delicate rockets and easy integration into custom builds
3-second delay: Provides precise deployment timing for controlled recovery and timing-sensitive launches
Low weight and gentle boost: Reduces stress on delicate airframes, extending rocket lifespan
Bulk pack of 4 engines: Convenient for frequent launches, group activities, and educational use
Summarized by Shop
The Estes 1/4A3-3T Engine Bulk Pack gives you the freedom to fly more often with one of the most consistent mini engines in model rocketry. Designed specifically for lightweight rockets, this compact engine delivers a gentle but reliable boost that keeps flights controlled, recoveries easy, and your rockets ready to fly again and again.
