57.4mm Cylinder Kit for GY6 150cc Scooters ATVs Go Karts Sandrail Moped Quad 4 Wheeler Dune Buggy Roketa Taotao Jonway 57.4mm Cylinder Kit. Top Quality Guaranteed. It fits for most Chinese GY6 150cc Scooters, ATVs and Go Karts; Include Cylinder Body,Piston,Piston Ring,Cylinder Head Gasket and oil seal; Bore: 57.4mm Please check the pictures and specifications for compatibility before placing orders.