Contracted from aluminum, the cylinder is lined with a nickel-carbide coating for durable, reliable performance. Features a forged piston that's been molybdenum coated for high performance use and extended wear life. Premium quality gasket kit meets or exceeds OEM specifications. Includes: Cylinder, piston, piston pin, piston pin rings, gasket kit. Fits: Kawasaki KX 125 2003-2007.