50 cc motorcycle engine for cubs,mopeds ,very good performance . The detailed imformation ... modelIP39FMA147FM147FMF152FMH156FMI163FMIEngine type1 cylinder,4 stroke,2 valves1 cylinder,4 stroke,2 valves1 cylinder,4 stroke,2 valves1 cylinder,4 stroke,2 valves1 cylinder,4 ... stroke,2 valves1 cylinder,4 stroke,2 ...