Complete rocker arm assembly for GY6 Chinese engines.

This is a complete assembly including valve adjusters fits 50cc 4-stroke Chinese 139QMA/B mopeds.

This is suitable for cylinder heads that use short 64mm valves (not suitable for cylinder heads using the longer 69.5mm valves).

To check if the rocker arms are suitable for short (64mm) valves or long (69.5mm) valves, please see the 2nd image.

Set your valve clearances to 0.1mm after fitting!