The WISECO Crankshaft Kit for Yamaha YZ85 models is factory assembled and precision trued to OEM specifications. It features double-forged Wiseco connecting rods designed for dimensional consistency through improved grain flow, along with shot-peening that eliminates residual stresses and smoothly blends the rod forging surfaces.
A corrosion-resistant surface treatment helps protect the assembly, while optimized crank pin bearing radial running clearance supports performance. Precision honing provides an ultra-round bearing surface, and precision-engineered oiling slots are designed to maximize rod strength and bearing life. Double-drilled small ends provide the piston pin with additional lubrication and cooling, helping 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: 09210099. Manufacturer part number: WPC123. Fits 2002, 2003, 2004, 2005, 2008, 2011, 2015, 2016, 2017, and 2018 Yamaha YZ85 models.
Features:
- Factory assembled and precision trued to OEM specifications
- Double-forged Wiseco connecting rods support dimensional consistency through improved grain flow
- Shot-peened connecting rods eliminate residual stresses and smoothly blend rod forging surfaces
- Corrosion-resistant surface treatment
- Optimized crank pin bearing radial running clearance
- Precision-honed ultra-round bearing surface
- Precision-engineered oiling slots 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 2002, 2003, 2004, 2005, 2008, 2011, 2015, 2016, 2017, and 2018 Yamaha YZ85 models
Fitment:
2002 Yamaha YZ85
2003 Yamaha YZ85
2004 Yamaha YZ85
2005 Yamaha YZ85
2006 Yamaha YZ85
2007 Yamaha YZ85
2008 Yamaha YZ85
2009 Yamaha YZ85
2010 Yamaha YZ85
2011 Yamaha YZ85
2012 Yamaha YZ85
2013 Yamaha YZ85
2014 Yamaha YZ85
2015 Yamaha YZ85
2016 Yamaha YZ85
2017 Yamaha YZ85
2018 Yamaha YZ85