This is a 21 Tooth 32 Pitch Pinion Gear for the Traxxas E-Maxx Truck. This is the gear which is attached directly to the motor.
Designed for a 3mm shaft
One 21 tooth Pinion Gear
One 3 x 4mm Set Screw
Assembly onto an E-Maxx truck.
1.5mm hex wrench to tighten set screw.
This gear is only one of two which are used on the E-Maxx dual motor set-up.