The Estes 1/2A3‑2T is a single-stage 13 mm mini engine for lightweight model rockets. With 1.25 N‑s impulse, 8.3 N peak thrust, and a 2‑second delay, it delivers quick and reliable launches. Packs include 4 engines, 4 igniters, and 4 plugs.

Ideal for small rockets like Mini Alpha™, Mini Bertha™, and Mini Honest John™, it’s perfect for educational, hobbyist, and backyard flying.

Includes:

4 × 1/2A3-2T Engines

4 × Starters

4 × Starter Plugs

PLEASE NOTE: You must have a physical address for delivery.