This pinion gear is made from hard anodized chrome steel, its 48-53HRC certified. You can get the capability you will need for the car through changing pinion gear. With comparable outside gear, you'll be able to enhance your pinion gear (within allowable range) to own various torque and rate. (the reduced the T count, greater the torque; the greater number of high priced the T count, the faster the rate.)
Specification: Bore Diameter: 5mm / Modulus: 0.8mm / metal Pinion: 40CR
Applications: 1/8th monster such as E-MAXX, E-REVO, SUMMIT etc.