This pinion gear contains hard anodized chrome metal, it is 48-53HRC certified. You're getting the vigor you will need the automobile through changing pinion gear. With comparable outside gear, you'll raise your pinion gear (within allowable range) to obtain different torque and cost. (the paid off the T count, the bigger expensive the torque; the more expensive the T count, the faster the cost.)
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.