The winningest clutch in the world, race proven by all the best teams worldwide including Team Muscle Milk Honda, Team Red Bull KTM, Team Monster Kawasaki, Team Yoshimura Suzuki and Team Rinaldi Yamaha. Includes: Billetproof® Clutch Cover. Billetproof® Clutch Basket. Inner Hub. Pressure Plate. Fiber and Steel Plates. 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.