Fits the following bikes:

Yamaha YZ85 2002-2009

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