... at the lowest wholesale price direct from us.Motorized Bicycle Engine Kit, Gasoline Engine Kit for 48cc, 60cc, 80cc Specification: Model50cc(48cc) 60cc80cc ... (or 10W/40, 10W/30 machine oil)Mixing ratio of fuel and engine oil16:1 for new sets, 20:1 after running ... /h35km/h38km/hMax. Load capacity120kg150kg180kgFuel Type90#90#90# Motorized Bicycle Engine Kit, Gasoline Engine Kit for 48cc, 60cc, 80cc