Universal Parts 47mm QMB139 Non Emissions Head - 69mm Valves

Universal Parts 50cc QMB139 4-stroke 47mm, Non Emissions Cylinder Head with 69mm Valves for use with 72cc Big Bore Kit!Please see our Warranty & Returns Policy. For Use with 72cc Big Bore Kit Valve Length: 69mm Overall Height: 59.5mm Intake Port Diameter: 17mm Exhaust Port Diameter: 18mm Intake Bolt Hole Spacing: 44.5mm Exhaust Bolt Hole Spacing: 50mm