Wiseco Piston YAMAHA - 439 cc
The pistons are precision-machined on state-of-the-art CNC machines. They are made from the same low-expansion, low-friction alloy used by all major Japanese engine manufacturers. Piston assemblies are an excellent choice for replacing the original piston in your motorcycle, scooter, moped, ATV, personal watercraft, etc.
Pistons for sleeved cylinders are available in standard size and a wide range of oversizes. Oversize options up to 2 mm greatly extend cylinder life by allowing for more rebore jobs. Pistons for plated cylinders are available in standard size and in oversizes A, B, C, and D+. Take advantage of the oversize options to extend the life of plated cylinders.
- Compatible brandYAMAHA
- Displacement439 cc
- Standard bore68.5 mm
- Oversize boreStandard
- Actual bore68.5 mm
- Stroke59.60 mm
- NotesChrome bore
- Number2282M06850