This Kyosho factory replacement pinion gear features 12 teeth and a 0.8 module (32 pitch) tooth profile. It includes a set screw for securing the gear to the motor shaft. Designed for Kyosho KC10 platform vehicles, it is a direct drop-in replacement for maintaining proper drivetrain mesh and performance. Features: 12-tooth pinion gear 0.8 module (32 pitch) tooth profile Includes set screw Metal construction 7/7/26 cs