New in Box Hinson Billetproof Inner Clutch Hub Hinson Clutches are championship proven by almost every major factory team and rider in the world, including Eli Tomac, Ken Roczen, Cooper Webb, Tim Gajser, Jeffrey Herlings, Jeremy Seewer, Chase Sexton, & Joey Savatgy. 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 more true creating less heat when clutch is disengaged When used with Hinson Clutch Components pressure plate helps eliminate clutch chatter