Forged piston kit Wossner for Yamaha YFM 250 Raptor / YBR 250 manufactured between 2008-2012.
The kit includes piston, rings, pin, and clips.
Please select the piston size from the box above.
Technical specifications:
- cylinder diameter: 74.00mm
- thermal clearance: 0.05mm
- number of rings: 3 (two compression / one oil)
- compression ratio: 12.00:1 (increased compression 12.00:1 compared to 9.50:1 OEM)
- pin-to-cap distance (measured from the center of the pin): 23.50mm
- piston pin dimensions: 17x10x46mm.
Available piston sizes:
- A (73.95mm)
- B (73.96mm)
- C (73.97mm)
- +2.00mm (75.95mm)
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