The WISECO Crankshaft Kit for Honda CRF250R models is factory assembled and precision trued to OEM specifications. It features a double-forged Wiseco connecting rod designed for dimensional consistency through improved grain flow, along with shot-peening that eliminates residual stresses and smoothly blends the rod forging surfaces.
The crankshaft assembly includes a corrosion-resistant surface treatment, optimized crank pin bearing radial running clearance, and a precision-honed, ultra-round bearing surface. Precision-engineered oiling slots are designed to support rod strength and bearing life, while 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.
This kit includes the crankshaft assembly, main bearings, and bottom-end gasket kit. It fits the 2004, 2005, 2006, 2007, 2008, and 2009 Honda CRF250R. Distributor part number: 09210140. Manufacturer part number: WPC159.
Features:
- Factory assembled and precision trued to OEM specifications
- Double-forged Wiseco connecting rod with improved grain flow
- Shot-peened rod forging surfaces to eliminate residual stresses
- Corrosion-resistant surface treatment
- Optimized crank pin bearing radial running clearance
- Precision-honed ultra-round bearing surface
- Precision-engineered oiling slots designed to maximize rod strength and bearing life
- Double-drilled small ends provide additional piston pin lubrication and cooling
- Kit includes crankshaft assembly, main bearings, and bottom-end gasket kit
- Fits 2004-2009 Honda CRF250R
Fitment:
2004 Honda CRF250R
2005 Honda CRF250R
2006 Honda CRF250R
2007 Honda CRF250R
2008 Honda CRF250R
2009 Honda CRF250R