This pinion gear consists of hard anodized chrome metal, it's 48-53HRC certified. You can find the energy you need for the car through changing pinion gear. With comparable outside gear, you are able to change your pinion gear (within allowable range) to have various torque and price. (the low the T count, greater the torque; greater the T count, the faster the speed.)
Specification: Bore Diameter: 5mm / Modulus: 1.0mm / Steel Pinion: 40CR
Applications: the most popular 1/8th off-road (buggy and truggy)