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GY6 63mm Big Bore Cylinder Kit

  • $82.99
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63mm Big Bore Cylinder Kit for 150cc GY6 4-stroke engines. Upgrades to 180cc based on a stock stroke of 57.8mm! Includes cylinder, piston, pin, circlips, rings, head gasket and base gasket.


*You may need to modify your engine case to accommodate the larger cylinder.

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