Manufactured by
Kit includes piston, rings, pin, clips, wrist pin bearing top end gasket kit (you get exactly what is pictured)
Cast piston has super-high silicone content for additional strength
Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life
Piston dome is anodized for superior heat resistance and longer lifespan
gaskets use performance materials to increase durability and provide greater reliability
Includes all gaskets pictured to rebuild top end
Kit is for standard bore size – 68.00mm
Size A piston is 67.94mm
Compression ratio of 10.6:1
Compatible with Yamaha models below:
1992 – 1994 YZ250
1992 – 1994 WR250