Used by Triumph Factory Racing. Includes Billetproof® Clutch Cover, Basket, Inner Hub, Pressure Plate, Spring, Fiber and Steel Plates. 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.