Motorcycle fender is a plate-like structure installed behind the wheel frame, usually made of high-quality rubber and some engineering plastics. The effect after installation is that the fender protrudes about 5cm from the car body, effectively preventing flying stones and gravel from hurting the paint surface of the car body. A motorcycle is a two-wheeled or three-wheeled vehicle driven by a gasoline engine and controlled by a handlebar. It is light, flexible and fast, and is widely used in patrol, passenger and cargo transportation and other fields. It is also used as sports equipment. Generally speaking, motorcycles can be divided into street cars, road racing cars, cross-country motorcycles, cruise cars and station wagons.