The Turner Aluminum Rear Sprocket is a very affordable high quality replacement or upgrade to your O.E.M. drivetrain providing performance equal to or better than more expensive rivals. 100% CNC machined with mud grooves designed to reduce chain wear and stretch, and increase sprocket life. Made from 7075-T6 billet aluminum; this is the same lightweight, long-lasting material used by more expensive brands. Computer designed pattern for increased strength and decreased weight. Less rotating mass improves acceleration and deceleration. Available in a variety of anodized colors, select your ride to see available options. Made in the U.S.A.