Used by most major factory teams and riders. Improves clutch performance and life, as well as heat dissipation. Precision machined from billet T-6 aircraft quality aluminum to aerospace tolerances and Akadized for 5 times the wear resistance to stock. allows clutch assembly to spin more true creating less heat when clutch is disengaged and providing a more positive smooth clutch engagement. Helps eliminate clutch chatter. Kits include basket, inner hub, pressure plate, friction steel plates and springs, cushions and clutch cover included as needed.