Rebuild your GY6 top end with the OEM-sourced Blue Line 57.4mm Stock Cylinder Kit. Everything you need for a complete top-end refresh is included in one kit: finned aluminum cylinder, piston, head gasket (aluminum), base gasket (composite), cam chain adjuster gasket, two piston ring sets (compression and oil), two circlips, wrist pin, and two cylinder alignment dowels. Stock bore replacement for GY6 150cc engines.
Does not include cylinder head.
Fits GY6 125/150cc horizontal 4-stroke engines. See the make/model list above for confirmed compatible scooter models across Wolf, Icebear, Jonway, Tao Tao, Bintelli, SSR, and many other Chinese brands.
