1x 100cc Engine Only. Bore & Stroke:49mm & 40.2mm. Mode of Engine:Single cylinder, air-cooling, 2-stroke. Lubrication Oil: 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.
