Comes in a set of 4 pieces for front and rear 100%. A mud flap 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 mud flap 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. Mud flaps can be large rectangular sheets suspended behind the tires, or may be small molded lips below the rear of the vehicle’s wheel wells. Mud flaps can be aerodynamically engineered, utilizing shaping, louvers or vents to improve airflow and lower drag.