Wossner WO-3504-DA Forged Piston Kit is a Premium Series piston Yamaha YZ250F, YZ250FX and WR250F
Wossner WO-3504-DA Premium Series Forged Piston Kit for Yamaha YZ250F, YZ250FX & WR250F – 77.00 mm
The Wossner WO-3504-DA Forged Piston Kit is a Premium Series piston designed for selected Yamaha YZ250F, YZ250FX and WR250F four-stroke off-road motorcycles. Featuring a 77.00 mm standard bore, 76.96 mm piston size and a 14.4:1 Wossner compression ratio, it is engineered for dependable performance in motocross, enduro and competition engine rebuilds.
Manufactured from high-strength forged aluminium, the WO-3504-DA features Wossner’s Double Bridge Forging construction for increased piston strength and stability under demanding high-RPM conditions. The two-ring design provides effective sealing and durability, while precision machining ensures accurate fitment and reliable operation.
- Premium Series forged piston kit
- 77.00 mm standard bore size
- 76.96 mm finished piston size
- 14.4:1 Wossner compression ratio
- 53.60 mm stroke compatibility
- 20.00 mm compression height
- 16 mm wrist pin diameter
- Double Bridge Forging construction
- Two-ring piston design
- Includes piston, wrist pin and circlips
- OEM piston ring is not included
Important: Always confirm your motorcycle make, model, year, cylinder measurements and required piston grade before ordering. The correct OEM piston ring must be purchased separately.
Notice: Product images may differ from the actual product. Images are provided for illustration purposes only and may show a representative item rather than the exact part supplied.