Wiseco 03-05 Yamaha YZ/WR450F 12.5:1 (4785M09700) 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
2003-2006	Yamaha	WR450F	Base
2003-2005	Yamaha	YZ450F	Base

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