Piston Kit - Yamaha YZ 250F / WR 250F ('05-'07) / Gas Gas EC250 F ('10-'16) (76.96-78.96mm) - Wossner

Forged piston kit Wossner for Yamaha YZ250 F / WR250 F (2005-2007) / Gas Gas EC250 F (2010-2016).

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: 3 (two compression / one oil)
- compression ratio: 12.5:1 (OEM)
- pin-to-head distance (measured from the center of the pin): 22.20mm
- piston pin dimensions: 16x9x38mm.

Available piston sizes:
- A (76.96mm)
- B (76.97mm)
- C (76.98mm)
- +2.00mm (78.96mm)