Specifications Color: Black, Silver Type: Single Cylinder, 4-stroke, Air-cooling Material: Aluminum, Iron, #415 Steel, Rubber, Nylon Surface Treatment: Baking Paint, Rust Prevention Shot Blasting Assembly Required: Yes Starter System: Hand Start Number of Teeth: 44 Ignition Mode: CDI Max Torque: 4.5N-m Bore Stroke: 5640mm/2.21.57inch Displacement: 100CC Horsepower: 3.5HP Max Power: 2kw/h Max Rotating Speed: 3600rpm Max Speed: 50km/h Compression Ratio: 7:1 Fuel Tank Capacity: 2L/0.52 Gallons Fuel Consumption: 2.5L/0.66 Gallons/100KM Lubricant Capacity: 0.6L/0.15 Gallons Gasoline Type: 92#, 95# Max Load Bearing Capacity: 200kg/440lbs Noise: About 75 decibels Gross Weight: 21.05kg/46.4lbs Net Weight: 18.75kg/41.33lbs Chain Cover: 407.5cm/15.742.95in. Perhaps you are an outdoor enthusiast who enjoys cycling in parks or mountains, and ordinary bicycles can no longer meet your need for excitement. Let’s take a look at our. Through installation, it can give your bicycle the speed and excitement of a motorcycle, allowing you to go further in one ride and explore stunning scenery that you have never seen or experienced before! Home and embark on a more exciting outdoor cycling experience! The aluminum engine shell, iron fuel tank with baking paint, a 415# steel chain with rust prevention shot blasting process, and a rubber and nylon belt offer. Achieving a max bearing capacity of 440 pounds and ensuring superior performance and a longer lifespan. The engine boasts a robust 3.5HP horsepower, a displacement of 100cc, a max power of 2kw/h, and a max rotating speed of 3600RPM, which provides you with strong power and accelerates your bike to a max speed of 50km/h. It measures 11.415.96.29 inches with a large capacity of 0.52 gallons, allowing it to work for a long time. You don’t need to fill the tank frequently, which is very convenient. The overhead valve is used, which effectively helps reduce carbon buildup and dramatically improves fuel savings. This bicycle engine kit only has slight noise (about 75dB) and vibration when used. You can use it in most outdoor environments without worrying about noise disturbance. You can enjoy the speed and passion comparable to motorcycles at a lower price! This four-stroke engine kit is more suitable for people with lower budgets or only short-term needs for motorcycles, allowing you to enjoy faster riding speed and a more exciting life! By adopting an air cooling system, the temperature of the engine can be quickly reduced, effectively preventing overheating and ensuring smooth and long-lasting riding. The ergonomic T-shaped start handle provides a point of application of force for easy and comfortable starting. It’s made of high-quality iron and can protect you from getting hurt. The pulling rope is made of nylon, which is more. The red engine switch helps you easily turn the engine on or off when in use or not. This product is suitable for mountain bikes, road bikes, gravel bikes, beach bikes and so on with large triangular empty frames. Type: Single Cylinder, 4-stroke, Air-cooling. Material: Aluminum, Iron, #415 Steel, Rubber, Nylon. Surface Treatment: Baking Paint, Rust Prevention Shot Blasting. Starter System: Hand Start. Number of Teeth: 44. Max Torque: 4.5N-m. Bore Stroke: 5640mm/2.21.57inch. Max Rotating Speed: 3600rpm. Compression Ratio: 7:1. Fuel Tank Capacity: 2L/0.52 Gallons. Fuel Consumption: 2.5L/0.66 Gallons/100KM. Lubricant Capacity: 0.6L/0.15 Gallons. Max Load Bearing Capacity: 200kg/440lbs. Noise: About 75 decibels. Gross Weight: 21.05kg/46.4lbs. Net Weight: 18.75kg/41.33lbs. Chain Cover: 407.5cm/15.742.95in. Fuel Tank Size: 291516cm/11.415.96.29in. Gear Diameter: 18cm/7.08in. Diameter of Bicycle Teeth Disc: 18cm/7.08in. Engine Size: 382923.5cm/14.9611.419.25in. Package Size: 73.53528cm/28.9313.7711.02in. All Accessories for Assembly. Please carefully read the manual and strictly follow the precautions to have a better experience. Please note that professional installation is recommended. Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before you order. Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday.