CYLINDER HEAD 4 VALVE GY6

This is for 150cc Scooters, Go Karts, and ATVs needing an extra push from a 4 valve system (most units have only 2). Maximize your GY6 performance with this 4 valve head kit, guaranteed to put you ahead of the pack. You will feel a more responsive low end and a smooth mid range that pulls hard all the way to the top end. We recommend having this 4 Valve Head kit installed by a professional small engines mechanic. This is a good buy if you are testing different transmission systems on the Go Karts which need more power.