Brand New in Box!! Fits Yamaha 10-22 YZ450F Hinson Clutches are championship proven by almost every major factory team in the world, including Team HRC Honda, Team Monster Kawasaki, Team RedBull Ktm, Team JGR Suzuki and Team Wilvo Yamaha. Includes Billetproof® Clutch Cover, Basket, Inner Hub, Pressure Plate, Fiber & Steel Plates and Springs. Used by most major factory teams and riders. Improves clutch performance and life. Improves heat dissipation. Precision machined from billet T-6 aircraft quality aluminum to aerospace tolerances, and hard coated for five times the wear resistance to stock* (*with proper maintenance). Allows clutch assembly to spin truer creating less heat when clutch is disengaged and providing a more positive smooth clutch engagement. Helps eliminate clutch chatter. HC416