3943X GREAR 13T PINION (9)

The Traxxas 3943X is a heavy duty 13-tooth, 32-pitch pinion gear machined from hardened steel for long-lasting performance. Designed to fit standard 3mm motor shafts, it includes a set screw for secure installation. This pinion gear is ideal for replacing worn gears or tuning your RC vehicle’s gear ratio to balance acceleration and top speed for different driving conditions.