Wiseco PK1679 47.5mm Piston Kit for Yamaha YFM80 Badger & Raptor 80

The Wiseco PK1679 is a complete top-end piston kit designed for the Yamaha YFM80 Badger and YFM80W Raptor 80 ATVs. Featuring a 47.5mm overbore diameter (0.50mm over standard), this kit provides everything needed for a thorough top-end rebuild or overbore service.

Key Features:

• Forged aluminum alloy piston — engineered and forged in the USA for superior strength and reduced weight compared to cast alternatives
• 47.5mm bore diameter — a 0.50mm oversized piston ideal for overbore top-end rebuilds
• 11:1 compression ratio — optimized for high-performance output in the 80cc powersport engine
• Includes piston ring(s), wrist pin, and circlips — all components needed for complete installation
• Designed and built specifically for the Yamaha YFM80 2-stroke engine architecture
• Wiseco ring types are application-specific and engineered to fit only Wiseco pistons for proper sealing and longevity

Wiseco is the only aftermarket piston manufacturer in the United States that produces pistons exclusively using the forging process, utilizing 3D design techniques and finite element modeling to maximize strength-to-weight ratio. All pistons are engineered, forged, and machined in Mentor, OH.