Replacement of the stock damaged parts to ensure a long service life and better working performance.
Made of 40CR steel, with higher hardness and better wear resistance.
Better transmission performance,improve the performance of your RC car.
Motor tooth diameter:5mm.D-shaped motor gear hole module:1.5mm.Number of teeth: 12T.Tooth surface width:9mm.Outer diameter of spur gear 55.5mm.12T-35T is recommended for the original motor base.