The WISECO Crankshaft Kit is designed for select Yamaha YZ80 applications and includes a factory-assembled crankshaft precision trued to OEM specifications. The assembly features a double-forged Wiseco connecting rod engineered for dimensional consistency through improved grain flow, along with a corrosion-resistant surface treatment.
Shot-peening helps eliminate residual stresses and smoothly blend the rod forging surfaces. Optimized crank pin bearing radial running clearance supports performance, while precision honing creates an ultra-round bearing surface. Precision-engineered oiling slots are designed to maximize rod strength and bearing life, and double-drilled small ends provide the piston pin with additional lubrication and cooling to help reduce top-end distortion caused by thermal transfer from the piston.
The kit includes the crankshaft assembly, main bearings, and bottom-end gasket kit. Distributor part number: 09210101. Manufacturer part number: WPC122. Fitment includes 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, and 2001 Yamaha YZ80 models.
Features:
- Factory assembled and precision trued to OEM specifications
- Double-forged Wiseco connecting rod with improved grain flow for dimensional consistency
- Shot-peened rod forging surfaces help eliminate residual stresses
- Corrosion-resistant surface treatment
- Optimized crank pin bearing radial running clearance
- Precision-honed ultra-round bearing surface
- Engineered oiling slots designed to maximize rod strength and bearing life
- Double-drilled small ends provide additional piston pin lubrication and cooling
- Includes crankshaft assembly, main bearings, and bottom-end gasket kit
- Fits 1993–2001 Yamaha YZ80 models
Fitment:
1993 Yamaha YZ80
1994 Yamaha YZ80
1995 Yamaha YZ80
1996 Yamaha YZ80
1997 Yamaha YZ80
1998 Yamaha YZ80
1999 Yamaha YZ80
2000 Yamaha YZ80
2001 Yamaha YZ80