Improves clutch performance, clutch life and heat dissipation Used by all major factory teams and riders Precision machined from billet T-6 aircraft quality aluminum to aerospace tolerances, and Akadized for five times the wear resistance (with proper maintenance) to stock Allows clutch assembly to spin more true creating less heat when clutch is disengaged This product can be used with Yamaha YFZ350 Banshee 87-06