Naraku GY6 63mm Big Bore Kit

LogoNaraku 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
GY6 QMI/QMJ 152/157, Various unlisted makes/models


2 in stock