This pinion gear is constructed of difficult anodized chrome steel, it's 48-53HRC certified. You will get the energy you want for your car through changing pinion gear. With similar external gear, you'll improve your pinion gear (within allowable range) getting various torque and rate. (the reduced the T count, the larger the torque; the higher the T count, the quicker the speed.)
Specifications: 5mm Bore Diameter/0.53mm Modulus/40CR Steel Pinion
Applications: 1/10th SCT/Truck/Monster Truck (i.e. TRAXXAS 1/10 SLASH 4*4)
