Naraku GY6 63mm Big Bore Kit

$179.99
SKU: 137-11

This item is IN STOCK

Current Stock: 3

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