QMB139 64mm Valve Rebuild Kit
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