LONCIN 686CC engine, liquid-cooled, single cylinder, four valves, SOHC structure (low intake resistance, high inflation efficiency, strong power), sharing BMW manufacturing platform technology, all-aluminum alloy cylinder block +Ni-SiC composite coating, higher wear resistance, strong corrosion resistance, better heat dissipation. Patented HIGH LEVEL INTAKE TECHNOLOGY: high level circulation intake and CAE smooth optimization, greatly improve the charging efficiency of the engine.