Universal Parts QMB139 64mm Valve Rebuild Kit

Universal Parts 64mm Valve Assembly for 50cc 4-stroke QMB139. Includes intake and exhaust valves, inner and outer springs, valve washers, valve seals, valve keepers, and valve retainers.

• Valve Length (intake & exhaust): 64mm
• Shaft Diameter (intake & exhaust): 5mm
• Intake Valve Diameter: 18.4mm
• Exhaust Valve Diameter: 16mm