Glixal ATMT1-024 GY6 125cc 150cc to 170cc 61mm Performance Cylinder Head Assy with valves for 152QMI 157QMJ Chinese Scooter Moped ATV Go Kart (None EGR Type) Fits the GY6 125cc to 170cc Engine with a 60mm Height Head,76mm Bolt Pattern & 4 Bolt Valve Cover Combustion Chamber Diameter-61mm High Performance 61mm Cylinder Head for 152QMI/157QMJ Engine This is a Non EGR Head, Does Not Have the EGR Port