HINSON Billetproof Inner Hub Spare Parts: Piston 9478DA -

Spare Parts: Piston 9478DA - Top engine gasket: 604448

Through the partnership with the best MXGP teams STM has reached the maximum performance following an R&D

Lightweight LG® PC/ABS Shell

Only one part number to stock and order

Four-stroke kits include free timing chain

HINSON Billetproof Inner Hub Spare Parts: Piston 9478DA -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)