SSP-G 52mm QMB139 Performance Head

SSP-G 50cc QMB139 4-stroke 52mm, performance cylinder head. Please note: replaces Cylinder Heads with 64mm Valves (Short Valve Style).Please see our Warranty & Returns Policy. Intake Valve Diameter: 21.5mm Intake Port Diameter: 24mm Exhaust Valve Diameter: 18.9mm Exhaust Port Diameter: 22mm Valve Length: 62.3mm (compatible with 64mm Short Valve Style Heads) Does Not Include Camshaft, Please See Related Items