Description:100% New Cylinder body assembly for GY6 150cc Engine ATV， Go Kart， Scooter. Cylinder Size: Approx. 57.4mmOverall Height: Approx.90mmCylinder Sleeve Outer Diameter: Approx. 60.7mm Package including: 1 x Cylinder body1 x Piston1 x Set gasket1 x Set ring