Piston Kit (Increased Compression) - Yamaha YZ 250F / WR 250F ('08-'13) (76.96-76.98mm) - Wossner

Forged piston kit Wossner High Compression for Yamaha YZ250 F / WR250 F 4T manufactured between 2008-2013.

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: 14.10:1 (increased compression 14.10:1 compared to 13.50:1 OEM)
- pin-to-cap distance (measured from the center of the pin): 22.50mm
- piston pin dimensions: 16x9x38mm.

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