Forged piston kit Wossner for Yamaha TT-R 250 4T manufactured between 1999-2009.
The kit includes piston, rings, pin, and clips.
Please select the piston size from the box above.
Technical specifications:
- cylinder diameter: 73.00mm
- thermal clearance: 0.05mm
- number of rings: 3 (two compression / one oil)
- compression ratio: 10.20:1 (OEM)
- pin-to-head distance (measured from the center of the pin): 23.60mm
- piston pin dimensions: 18x11x51mm.
Available piston sizes:
- standard (72.95mm)
- +0.50mm (73.45mm)
- +1.00mm (73.95mm)
- +1.50mm (74.45mm)
- +2.00mm (74.95mm)
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