50cc Cylinder Head & Valve Assembly GY6 / QMB139 4-Stroke Engines.
Our high quality parts are the exact replacement part for many Chinese manufactured brands and models of Chinese Mopeds and Scooters.
- Exhaust Bolt Hole Spacing: 49.75mm
- Intake Bolt Hole Spacing: 44.75mm
- Intake Valve OD: 18mm
- Exhaust Valve OD: 16mm
- Not EGR