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and one for racing use
Up to 1/2 hp gain
Yamaha Zuma
Although forged pistons are heavier
Full Circle Crankshaft
NCY GY6 150 Big Valve Cylinder Head (58.5mm 2 Valve) - 54mm A-Case Malossi and one for racing useNCY Big Valve Cylinder Head for the GY6 150cc Engine is one of the cleanest looking heads available on the market. This is a 58. 5mm 2 valve, big valve cylinder head. Designed specifically for the GY6 150cc engine, this head will provide better flow by allowing it to breathe better. The casting quality of this head makes it vastly superior. Giving off better performance qualities and reliability than most other heads. Pairing this with a bigger bore
