GY6 50cc 39mm Bore non-EGR cylinder head with 69mm valve


Completely Assembled non-EGR Style Cylinder Head with 69mm Valves for 50cc 4-stroke QMB139 engines.

non-EGR Style Cylinder Head
39mm Bore
* Valve Length: 69mm
* Overall Height: 59.5mm
* Intake Port Diameter: 17mm
* Exhaust Port Diameter: 18mm 
* Exhaust Bolt Hole Spacing: 49.75mm
* Intake Bolt Hole Spacing: 44.75mm 
* Please see picture for measurements