Restore reliable bottom-end performance with the Hot Rods 8643 Crankshaft Repair Kit. Designed for select Yamaha four-stroke motorcycles, this kit provides the key components needed to rebuild and repair a worn crankshaft rather than replacing the complete assembly. The kit includes a forged connecting rod, crank pin, crank bearing, wrist pin bearing, and thrust washers for a comprehensive repair solution.
The connecting rod is manufactured from 8620 AISI forged steel and case hardened for strength and durability. The 8620 AISI carburized crank pin is engineered to withstand demanding operating conditions, while the included thrust washers are made from SAE-recommended phosphor bronze. A high-quality silver-coated crank pin bearing promotes smooth sliding and reduced operating temperatures, and the wrist pin bearing is included to complete the rebuild.
Hot Rods part number 8643 fits select 2006–2009 Yamaha YZ450F models and 2007–2011 Yamaha WR450F models, including the 2010 and 2011 WR450F. Verify the motorcycle model year and engine application before installation. This crankshaft repair kit is intended for professional-quality engine service and helps provide a cost-effective alternative to discarding a serviceable crankshaft.
Features:
- Complete repair kit includes connecting rod, crank pin, crank bearing, wrist pin bearing, and thrust washers
- Premium-quality components designed to repair crankshafts instead of replacing them
- 8620 AISI forged steel connecting rod with case-hardened construction
- 8620 AISI carburized crank pin provides strength and durability
- SAE-recommended phosphor bronze thrust washers
- Silver-coated crank pin bearing supports smooth sliding and reduced operating temperatures
- Wrist pin bearing included for a complete crankshaft rebuild
- Fits 2006–2009 Yamaha YZ450F models
- Fits 2007–2011 Yamaha WR450F models, including 2010 and 2011 applications
- Brand: Hot Rods
- Manufacturer part number: 8643
- Vendor part number: 8643
Fitment:
2006 Yamaha YZ450F
2007 Yamaha WR450F
2007 Yamaha YZ450F
2008 Yamaha WR450F
2008 Yamaha YZ450F
2009 Yamaha WR450F
2009 Yamaha YZ450F
2010 Yamaha WR450F
2011 Yamaha WR450F
2016 Yamaha WR450F
2017 Yamaha WR450F
2018 Yamaha WR450F
2019 Yamaha WR450F
2020 Yamaha WR450F