Universal Parts 47mm QMB139 Complete Non Emissions Cylinder Head

Universal Parts 50cc QMB139 4-stroke 47mm, Non Emissions Cylinder Head with 64mm Valves for use with 72cc Big Bore Kit!

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• For Use with 72cc Big Bore Kit
• Valve Length: 64mm
• Overall Height: 59.5mm
• Intake Port Diameter: 17mm
• Exhaust Port Diameter: 18mm
• Intake Bolt Hole Spacing: 44.5mm
• Exhaust Bolt Hole Spacing: 50mm