Piston Kit (increased compression) - Yamaha YZ250F / WR250 F 4T ('01-'04) (76.96-82.96mm) - Wossner

Forged piston kit Wossner - High Compression for Yamaha YZ 250 F / WR 250 F 4T manufactured between 2001-2004.

The kit includes piston, rings, pin, and clips.

Please select the piston size from the box above.

Technical specifications:
- cylinder diameter: 77.00mm
- thermal clearance: 0.04mm
- number of rings: 2 (one compression / one oil)
- compression ratio: 12.80:1 (high compression 12.80:1 compared to 12.50:1 OEM)
- pin-to-cap distance (measured from the center of the pin): 20.50mm
- piston pin dimensions: 16x9x45mm.

Available piston sizes:
- A (76.96mm)
- B (76.97mm)
- C (76.98mm)
- +2.00mm
- +6.00mm