Description: If you are looking forward to modifying your bike to be faster, then try this gasoline-powered 53cc four-stroke engine. The maximum power of this engine is 1.4kw, and the rotating speed is up to 6800rpm. It runs efficiently with low noise, giving you a more comfortable riding experience. Application: It is suitable for adult bikes, especially for bikes with 26 inches frames, upgrading them to electric bikes. It also fits mountain bikes, road bikes, etc. Package Included: 1* 53cc 4-stroke Engine 1* Fuel Tank 1* English Manual Other Accessories for Assembly.