Cylinder head assy w/o SAS connection

GY6 150cc complete cylinder head suitable for the 157QMJ engines. This cylinder head is not supplied with a connection for the secondary air system and can be used as a straight forward replacement or a replacement with heads that currently have the SLS secondary air system. Can also be used on the 125cc scooters that have the 150cc big bore fitted.

Note: After installation, please always check the valve clearances.