First aftermarket part to go into a Factory Honda race bike in Jeremy McGrath's record winning CR250R. 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 hardcoated for five times the wear resistance to stock* (*with proper maintenance) Allows clutch assembly to spin truer creating less heat when clutch is disengaged When used with Hinson Clutch Components pressure plate and inner hub helps eliminate clutch chatter BILLETPROOF CLUTCH BASKET W/ KICKSTARTER GEAR & CUSHIONS . H489