Yamaha YZ250F WR250F Cosworth Piston Kit 13.9:1 2005-2013 77mm
Normal price £205.00
Brand new in box.
Cosworth piston kit including rings, clips & pin for Yamaha YZ250F/WR250F - 77mm Bore, 13.9:1 compression
- Ultra high performance, low friction, free revving, forged competition motocross pistons
- Forged from proprietary 2618 high tensile strength alloy
- Polished crowns to reduce carbon build up and to minimize the effects of hot spots which can lead to detonation
- Top ring land scrolling protects against scuffing, provides oil retention aiding lubrication, and reduces crevice volume that can lead to detonation
- The accumulator grooves aids compression ring sealing under high cylinder pressures
Please note the main image is a stock image and may not be for the model stated on the listing.