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.
The Wiseco team has led the powersports performance industry through eras and technological advancements, including the rise of high-performance 4-stroke engines. Today, Wiseco's forged 4-stroke pistons are engineered for specific engine applications and manufactured to the tightest tolerances, offering unparalleled performance and strength. Wiseco 4-stroke pistons are proven across all levels of riding and are available for a wide range of models.
Improved tensile strength of forged material optimizes strength and service life
Wiseco 4 Stroke Forged Series Piston Kit - Yam YFM660 Raptor/Grizzly/Rhino 9.
Designed and built for each specific 4-stroke powersports engine
Dedicated forgings allow for optimized strength-to-weight ratio
Includes high-quality piston rings, wrist pin(s), and circlips
Wiseco Yamaha YFM660 Raptor/Grizzly/Rhino 9.91 CR Piston Kit
Engineered, forged, and machined in the USA in Mentor, OH
Yam YFM660 Raptor/Grizzly/Rhino 9.9:1 CR
102.00 mm Bore - 9.9:1 CR
102.00 mm Bore, 9.9:1 CR
+2, Bore:102, 9.9:1
Engine Piston
Piston Kit
