A pair of front and back mudguard for fat bike 26*4.0. All nuts and bolts are included in the box. mud guard is used in combination with the vehicle fender to protect the vehicle, passengers, other vehicles, and pedestrians from mud and other flying debris thrown into the air by the rotating tire. A mudflap is typically made from a flexible material such as rubber that is not easily damaged by contact with flying debris, the tire, or the road surface. On bicycles the mudflap is called a spoiler. It helps keep the rider(s) cleaner.