**SUNROAD 50cc 2-Stroke Bicycle Engine Kit for 26" & 28" Mountain & Road Bikes - Motorized Bike Conversion Kit (Black) - Perfect for Commuting, Off-Road Adventures & DIY Bike Projects**

Introductions： Upgrade motor for improving bike performance! Maybe you are badly in need of our 50cc 2-Stroke High Power Engine Bike Motor Kit! It is particularly designed for 26" or 28" bicycles. In this kit, you will get cylinder top end, U-mount kit, brake lever, 44T rear sprocket, fuel tank, kill switch, carburetor and other necessary parts. All these included items are of great quality, with the adopted materials. This reliable and durable engine motor kit will help accelerate your bike speed up to 30km/h. It is really easy and practical for bike! 50cc Bicycle Engine Kit Black Specifications: Engine Mode: Single Cylinder, Air-cooling, 2-stroke Bore & Stroke: 40mm x 38mm=48 cm3 Type of Sparking Plug: Z4C 14MM Ignition Mode: CDI Compression Ratio: 6:01 Driving Ratio: 18:01 Fuel Type: No.90 Volume of Oil Consumption: 1.5L/100km Max. Power: 1.6Kw/6000r/min (3 horsepower/6000r/min) Rated Power: 1.15Kw/5000r/min (1.6 horsepower/5000r/min) Type of Clutch: Friction Plate / Dry Cooling Mode: Natural Air Cooling Lubrication Oil: Oil for 2-stroke Petrol Engine (or Oil for 10W/40.10W/30) Mixing Ratio ofFuel&EngineOil: 16:1 for new sets, 20: 1 after Running 500km Net Weight: 22.05 lbs / 10 kg; Speed Limitation: 30km/hour Suitable for: 26" or 28" Bicycle (function(f) {var _np=(window.P._namespace("AplusModule"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) { P.when('AplusModules-module-16-tech-specs').execute(function(resizeSpecTables) { resizeSpecTables('aplus-index-2', 'aplus-tech-spec-table', 'aplus-tech-spec-hide-loading'); }); })); Installation Manual: 1. When installing the chain, chain wheel and sprocket should be kept in the same straight line. 2. After Carburetor and Throttle Cable have been installed，Turn the Throttle to check whether carburetor is working correctly. 3. Installing Clutch cable: hold the clutch handle then spin the rear wheel of bicycle and check if it spins normally. Release the clutch handle, the wheel should stop spinning. 4. Adjusting the Chain tightness: Tighten up the chain, apply force to press the chain downward, the sagging down height within 0.5~1cm is considered ideal. 5. Spark plug, muffler, carburetor installation: Tighten all bolts 6. Check all wires are connected properly. Read more Tips for start the motor 1. Unleaded petrol / oil mixture is necessary. 2. Use only synthetic 2 stroke fuel to insure proper engine lubrication. 3. To start, move the choke lever to "on" position, hold in clutch, pedal the bike fast to get some speed, and then release the clutch gradually. 4. To stop, slow speed, disengage clutch and apply either original brake (if you didn't remove the original left handle brake). 5. To stop the engine, choke the carburetor completely with the lever on the carburetor. Alternatively, slow speed, hold in clutch and press the kill switch on twist-grip throttle. Read more Ignition Safely & Fuel-Efficient The ignition mode of the bike gasoline engine is capacitor discharge. With the electronic igniter, you can use it safely. And it only consumes 1.5 liters of fuel per 100 kilometers, which is super fuel-efficient. Powerful Engine Heavy duty metal engine body for added durability. Single Cylinder, Air-Cooling, Gasoline Engine. Engine kit is perfect to upgrade the regular bike to a motorized bike.The speed can reach up to 30km/h. Complete Engine Kit Comes with all needed hardwares for easy installation to convert your bike to a motorsized bicycle. Fits for most type 26" and 28" bikes with V-frame, such as mountain bikes, road bikes,cruisers, choppers. Read more Note: All the needed mounting brackets, gaskets, and hardware Please also keep in mind that the motor will use a mix of gasoline and oil. The oil is used as a lubricant. Without it, the performance and longevity of the motor will be reduced. Be assured the mixing ratio of fuel and engine oil is 16:1 for new sets, 20:1(18:1 is much better in summer because of the hot weather) after running 500km. The air cylinder might take some time to adjust to the load. Thus to avoid possible complications for the motor, please limit the riding time to a maximum of 1 hour for the first few rides. If you need Instruction or video, please contact our .