Replaces 50cc 2-stroke engine for motorized & bicycle. Type of Clutch:Friction Plate / Dry. Type of Sparking Plug:Z4C 14MM. Cooling mode:Natural air cooling.Bore & Stroke:40mm X 38mm=48 cm3. Volume of oil Consumption:1.5L/100km. Mode of Engine:Single cylinder, air-cooling, 2-stroke. Rated Power:1.15Kw/5000r/min (1.6 horsepower/5000r/min). Power:1.6Kw/6000r/min (3 horsepower/6000r/min). Lubrication Oil:oil for 2-stroke petrol engine (or oil for 10W/40.10W/30). Mixing Ratio of Fuel and engine Oil:16:1 for new sets, 20: 1 after running 500km. 1x 50cc 2-Stroke Engine Kit. This item is an engine only. Please check where the engine mount in pictures to verify that your bicycle has enough room to mount.