O.E.M. Ski Doo Crankshaft 420890732 remanufactured with O.E.M. Koyo and F.A.G bearings. Trued to within better than O.E. specs. Same crankshaft that is used in our Stage 2, 3 and Platinum engine rebuild kits. 30 years experience in the snowmobile industry, MCB Performance is your go to source for Snowmobile engine components and assemblies. No core required for this purchase

- You can add a complete engine gasket set to this purchase ($109.95) (not included, but shown in second photo)
- You can add a complete piston kit to this purchase. ($379.95)
- You can even add a complete cylinder to this purchase. ($599.95)(requires core)

Fits the Following Models (All 2007-08 Ski Doo models that came with the 800R monoblock style motor)
  • 2008 Ski-Doo GSX 800R
  • 2008 Ski-Doo MXZ 800R
  • 2008 Ski-Doo MXZ X 800R
  • 2008 Ski-Doo Summit 800R
  • 2007 Ski-Doo Summit 800R
  • 2008 Ski-Doo Summit X 800R
  • 2007 Ski-Doo Summit X 800R
  • 2007 Ski-Doo Summit XRS 800R


2003-Ski-Doo-800-REV-MXZ-SUMMIT-Renegade-dual-ring-piston-kit-MCB-Performance2003-Ski-Doo-800-REV-MXZ-SUMMIT-Renegade-dual-ring-piston-kit-MCB-Performance

- Need a cylinder? We have hundreds of cylinders in stock for all brands.
- Monoblock cylinders like the 800R are $599.95
- Individual cylinder are $359.95 each and require a core exchange
call to get Cylinders 
MCB Performance Center 810-395-7162