160cc Cylinder Kit 58.5mm for 4-stroke GY6 engines, Kymco AC.

• Increases volume for GY6 125/150cc engines.
• Diameter: 58.5 mm.
• Suitable for air-cooled 4-stroke engines 125-150cc from Kymco (scooters) and most Chinese imported vehicles 125/150cc (scooters, ATV, and buggies).
• Can be used with the original cylinder head.
• Available modified camshaft with adjustable timing.
• Confirmation required for Sym 125cc scooters that the engine is GY6 version (distance between cylinder head bolt holes: 63mm externally).