100% brand new, not installed, high quality. A complete engine kit for retrofitting bicycles. Heavy-duty metal engine body increases durability. Super fuel-efficient, enlarged cylinder head is good for heat dissipation.Fast and stable, up to 55km/h. Comes with all necessary hardware, easy to install. Item Type: Engine Motor Kit. Condition: 100% Brand New and High Quality. Engine Motor Kit For 100CC Bicycle Motorized 2-Stroke Gas Petrol Bike Silver. Material: Aluminum and Iron Color: Silver Engine model: 110CC, single cylinder, air-cooled, two-stroke Bore & Stroke: 52mm and 40.2mm Rated Power: 3.5Kw / 5000r / min Maximum power: 3.8Kw / 6000r / min Ignition method: CDI. Chain Model: 415 Chain length: 110 Links Compression ratio: 6:01 Transmission ratio: 18: 01 Fuel type: No. 90 Fuel tank capacity: 2L Speed limit: 55km / hour Lubrication Oil: oil of 2-stroke petrol engine (Or oil for 10W/40.10W/30) Fuel and oil mixing ratio: 16:1 for the new unit, 20:1 after 500km Spark plug type: Z4C 14MM Fuel consumption: 3L/100km Clutch type: Friction plate/dry Cooling method: Natural air cooling. 1 x 100cc Engine 1 x CDI Assembly 1 x Fuel Tank (with Valve) 1 x Carburetor Assembly 1 x Exhaust Muffler 1 x Clutch handle 1 Pair Left Handle Grip with Kill Switch 1 x Clutch Cable 1 x Throttle Cable 1 x Chain 1 x Sprocket 1 x Chain Idler Pulley 1 x Chain Guard 1 x Set of Other Mounting Accessories. Please check part photos, part number (OE# of your old part), part description and compatibility ch art above carefully and compare them with your old part to make sure it is what you need. 110CC, single cylinder, air-cooled, two-stroke. We will do everything we can to give you a satisfying solution. We do our best to resolve any issue. So please talk with us and we will not let you down. FEEDBACK IS VERY IMPORTANT TO US.