Fairdale Adjust-a-rack Cargo Rack Black. The Fairdale Adjust-A-Rack is a new take on the rear cargo rack. The rack is designed to be extremely easy to install. Fold the legs out bolt them on to the bike and use the sliding adjustment to level the top of the rack. Unlike many other racks the Adjust-A-Rack requires not cutting or tedious resizing to make it fit. Use any standard pannier bags with your Adjust-A-Rack.