Hinson Inner Hub MC85 21-.. fits for SX85/TC85 18-..

The Winningest High Perfomance Inner Hub in the World! | 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. | Smoother more positive starts. | Increased oil dynamics help keep the clutch cool. | Improves heat dissipation. | Helps eliminate clutch chatter. | Allows clutch assembly to spin more true creating less heat when clutch is disengaged and providing a more positive, smooth clutch engagement. | Precision machined from billet T-6 aircraft quality aluminum to aerospace tolerances, and hardcoated to provide a high resistance to wear* (*with proper maintenance). | Can be used with all other OEM clutch baskets, pressure plates and clutch plates & springs* (*unless otherwise specified). | Made In the USA.