Replacement cylinder head and valve kit for Chinese GY6 4-stoke 50cc mopeds.
This is a complete cylinder head including valves already ground in, fitted and ready to bolt on!

Suitable for all 139QMA/B engines and will also fit Peugeot V-Clic. 

This cylinder head has 64mm valves (short type) you will need to use the corresponding short type rocker arm assembly.

Available with or without the exhaust gas reduction (EGR) system.
If you have an EGR system you can still fit the 'without EGR' head if you wish to do away with the EGR emissions system for performance reasons.

To check if the rocker arms are suitable for short (64mm) valves or long (69.5mm) valves, please see the 3rd image.