This pinion gear consists of hard anodized chrome metal, it is 48-53HRC certified. You will get the ability you need for the automobile through changing pinion gear. With the same external gear, you are able to improve your pinion gear (within allowable range) to get different torque and rate. (the low the T count, the bigger the torque; the bigger the T count, the quicker the rate.)
Specifications: 5mm Bore Diameter/0.53 Modulus/40CR Steel Pinion
Applications: 1/10th SCT/Truck/Monster vehicle (i.e. TRAXXAS 1/10 SLASH 4*4)