MP 4 Valve Gas flowed YX160 Cylinder head.
This cylinder head will fit the YX160 and YX150 big valve engines there is a small valve 150cc engine this will not fit. This 4 valve head has a performance cam. titanium valve retainers and has been gas flowed by hand which can take up to 4 hours to flow. You can bolt this head straight on with a new piston and expect 19bhp a standard YX160 is around 14bhp this will turn your 160 into a high revving beast.