Custom Builds and Performance Parts
  • Naraku GY6 63mm Big Bore Kit


    img-qind.JPGNaraku 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!

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