New Wiseco Bottom End Kit
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
All bearings are O.E.M. quality for reliability and performance
Yamaha YFM660F Grizzly (2002 – 2008)
Yamaha YXR660 Rhino (2004 – 2007)