SSP-G 180cc Big Bore Power Kit for 150cc and 125cc 4-stroke GY6 Engines.
This complete Power Pack comes with a 63mm cylinder and matching long case "B-case" crankcase with oversized 57mm stud spacing. This means there is no machining required unlike all other kits on the market. The cases are drilled and tapped for an oil cooler if desired. The block off hardware must be installed if no oil cooler is used. The cases come with all of the oil seals pre-installed!
Includes the following: 63mm cylinder, piston, rings, pin, clips, Super HP 2-valve head, valve cover, camshaft, rocker arm assembly, cylinder mounting studs, complete gasket set, bushings for right-hand and left-hand cases, and bearings.