This pinion gear contains difficult anodized chrome metal, it's 48-53HRC certified. You'll find the power you'll need for the car through changing pinion gear. With comparable outside gear, you are able to improve your pinion gear (within allowable range) to own different torque and cost. (the low the T count, greater the torque; greater the T count, the faster the speed.)
Specification: Bore Diameter: 5mm / Modulus: 1.0mm / metal Pinion: 40CR
Applications: the most popular 1/8th off-road (buggy and truggy)