... Model:LC170MM-2 Type:250CC Dirt bike Engine 200cc,Motorcycle engine,4-stroke,vertical,water-cooled Displacement:249 ... improve heat dissipation. The 6-set clutch and modified friction plates are used and the optimization of ... of slipping.--------------------------------------------------------------------- 250CC Dirt bike Engine ,Motorcycle engine,Loncin Engine,single cylinder,4-stroke,water cooled