Hinson Clutches are championship proven by almost every major factory team in the world, including Team HRC Honda, Team Monster Kawasaki, Team RedBull Ktm, Team JGR Suzuki and Team Wilvo Yamaha 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 Works with all other OEM parts or all other Hinson 7 or 8 plate products Includes backing plate, screws & cushions. Made in the USA H889-B-1704