Big Bore (62mm)178cc Or (63mm)180cc

This cast aluminum high compression cylinder kit comes complete with cylinder, gaskets, piston, rings, clips and pin. Add the ultimate power to your GY6 with this performance kit. We suggest that installation is performed by an experienced technician. Upgrading to the 62mm kit will give you more power through the low, to mid range and top end performance. We recommend installing the performance high lift camshaft with this kit. The case will have to be bored out to accept this kit.

63mm (180cc) Also available, piston is not ceramic coated. (62mm pictured)

NCY GY6 Big Bore Cylinder Kit