Demco 5th wheel frame brackets are engineered to fit all major makes and models of trucks. Demco offers three different mounting styles for our 5th wheel hitches; Premier Series, SL Series, and UMS Series. Many of them have “no drill” options for a simpler, time-saving installation. The UMS Series uses no visible bed rails. This series of hitches mount to brackets underneath the truck box, requiring only four holes for the mounting pins to attach the hitch securely to the brackets underneath. The 8551008 Hijacker UMS-Series Frame Mounting Bracket Kit from Demco is compatible with 2014 to 2018 Chevrolet Silverado/GMC Sierra 1500 Trucks (5.5' regular, 6.5' double and 8' crew cabs) and 2004 to 2013 Chevrolet Silverado/GMC Sierra 1500 Trucks (5.5 regular cabs). Refer to Demco's recommendations to ensure a model specific fit before purchasing.