Naraku GY6 63mm Big Bore Kit

Naraku 63mm Forged Piston Big Bore Kit for 150cc and 125cc GY6 4-stroke engines and engine based vehicles. Crankcase modifications are needed for this cylinder kit. Increases displacement to 180cc!

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• Bore: 63mm
• Outer Sleeve Diameter: 64.9mm
• Displacement Increase to 180cc
• Overall Height (cylinder): 90mm