The Citroen C4 side skirts are the ones that are used on cars. These are external accessories used on automobiles to amplify the looks. These skirts are located on the sides of the vehicle at the bottom. The Citroen C4 aftermarket side skirts are strips created out of fiberglass, carbon fiber or plastic. They are styled in a way that they match the body lines of the vehicle which is being driven. Highly easy to bolt on, these skirts make your automobile appear lower to the ground. The deadly threesome of the Citroen C4 custom side skirts, the aftermarket front and rear bumpers are used to improve style.