Kit 250 cc Big Bore Engine gy6 fit atv chinese scooters , baotian Each Complete kit, includes: Piston Rings Wrist pin Pin clips Cylinder Gaskets This kit will fit most 4 stroke 250cc horizontal style Scooter, Moped, ATV 4-stroke air-cooled engines / motors that are being made and imported from Asia, China, Taiwan, Japan, Korea, etc. like kymco , baotian