Wiseco Piston YAMAHA - 491 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 the major Japanese engine manufacturers. Piston kits 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. The availability of oversizes up to 2 mm helps greatly extend cylinder life by allowing for more reborings. 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
• Displacement491 cc
• Standard bore72 mm
• Oversize bore0.50 mm
• Actual bore75.5 mm
• Stroke59.60 mm
• NotesFan-cooled
• Number2310M07250