This pinion gear is made of hard anodized chrome steel, it's 48-53HRC certified. You can get the power you want for your vehicle through changing pinion gear. With the same external gear, you can change your pinion gear (within allowable range) to get different torque and speed. (The lower the T count, the bigger the torque; the higher the T count, the faster the speed.)
Specification: Bore Diameter: 5mm / Modulus: 0.8mm / Steel Pinion: 40CR
Applications: 1/8th monster such as E-MAXX, E-REVO, SUMMIT, 1/10th SLASH 4*4 etc.
