This pinion gear consists of hard anodized chrome steel, it is 48-53HRC certified. You will get the energy you need for the automobile through changing pinion gear. With similar outside gear, it is possible to improve your pinion gear (within allowable range) to have various torque and rate. (the low the T count, the larger 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 like E-MAXX, E-REVO, SUMMIT, 1/10th SLASH 4*4 an such like.