... air-cooling system with high efficiency,the cooling efficiency will be enhanced with the increasing of rotate speed. Engine Type:Singlecylinder,4-stroke,forced air-cooling ... .h)≤354Started byElectric/KickClutch methodManual Wet Multi-PlateGearshift methodConstant mesh,two stage transmission,5-speed GearshiftApplicable motorcycle modelMotorcycles,Tricycles Forced air ...