Naraku GY6 58.5mm Big Bore Kit

$109.99
SKU: 137-61

This item is IN STOCK

Current Stock: 14

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Naraku 58.5mm Big Bore Kit for 125cc and 150cc GY6 4-stroke engines and engine based vehicles. Easy to install! Just bolt on with no crankcase modifications needed.


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  • Bore: 58.5mm
  • Outer Sleeve Diameter: 60.3mm
  • Displacement Increase to 155cc
  • Overall Height (cylinder): 91.5mm
  • Stud Spacing: 76.5mm
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GY6 QMI/QMJ 152/157, Various unlisted makes/models