YFZ 450 (04-09,12-13)
- Bolt in and go!
- Does not fit fuel injected R or X models
- Heavy Duty (04-05) (+14mm stroke) makes engine true 450cc
- Heavy Duty (06-08) standard stroke
- Uses stock piston
- When using Cylinder Works #21001-K01 makes engine 478cc
- Connecting Rod Side Clearance-0.2-0.55mm
- Engine Type-4-Cycle
- Final Displacement-450cc
- Heavy Duty-TRUE
- Increased Engine Stroke-1.400mm
- Stroke-63.400mm
- Type-Stroker
