Precision machined from T-6 billet aircraft-quality aluminum to aerospace tolerances, and Akadized for five times the wear resistance to stock (with proper maintenance) Improves clutch performance and life Improves heat dissipation Allows clutch assembly to spin truer, creating less heat when clutch is disengaged When used with Hinson Clutch Components clutch basket and inner hub, helps eliminate clutch chatter. HUB INR W/PRESS PLT KTM