2002-2008 Yamaha YXR66F Rhino 660 / YFM660F Grizzly 4x4 Wiseco Crankshaft ATV

Includes crankshaft, main bearings, complete bottom end gasket set, including all seals and gaskets needed for the job

The crank pin bearings are manufactured from the highest quality hot rolled steel. Case hardened to 58-62C

The caged needle roller bearings provide the highest possible RPM

Complete gasket kits are made from premium materials for maximum sealing and reliability

Complete kits have everything needed for your rebuild

All bearings are OEM quality for reliability and performance