Universal Parts GY6 61mm Big Bore Cylinder Kit

Universal Parts 61mm Big Bore Cylinder Kit for 150cc GY6 4-stroke engines. Upgrades to 169cc based on a stock stroke of 57.8mm! Includes cylinder, piston, pin, circlips, rings, head gasket, base gasket and chain tensioner gasket.


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