Wiseco Yamaha YFM660 Raptor 9.91 CR (4966M10100) Piston Kit

The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high-performance 4-strokes. Today, Wiseco's forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4-stroke pistons are ready to deliver the power and reliability you're looking for.

This Part Fits:

Year	Make	Model	Submodel
2001-2005	Yamaha	YFM660R Raptor	Base