Brand New Rocker Arm Camshaft Holder for 4 Stroke GY6 QMB139 50cc Engines with 64mm valves 

Rocker Arm Details:
* Assembly with both intake and exhaust rocker arms.
* Mounting Whole Spacing 50mm [2" inches] between holes center-to-center
* Rocker Arm Length 51mm
* For heads with 64mm valves
* For GY6 139QMB QMB139 4 Stroke Motors

Fits: 4 Stroke GY6 QMB139 49cc 50cc 60cc 80cc Engines with 64mm valves

For: 64mm valves only  ** Please check your rocker arm and valve size **

Stock # 300-999057

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