Renthal 216U-520-50GPSI Ultralight Rear Sprocket - 50T

Manufactured from a specially enhanced 7075 T6 aluminum alloy. Excellent resistance to wear combined with a very high tensile strength. Designed to withstand the rigors of Motocross and Supercross racing. Precision CNC machining for unequaled accuracy of fit, tooth profile and concentricity. Ultralite design reduces unnecessary weight while retaining maximum strength. Aluminum (1/3 the weight of steel) reduces the power required to accelerate. Brake unsprung revolving weight results in improved race performance. Self-cleaning mud grooves in between each tooth. Silver etched finish resists dirt build up.