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Once the hitch is removed, these custom underbed rails leave your truck bed completely open—no rails sticking up or taking space. The four mounting holes sit flush with the bed surface, giving you full use of the bed for hauling gear, tools, or anything else. It’s a clean, factory-style look that keeps your setup practical whether you’re towing or not.
This kit uses sturdy, black powder coated steel that resists corrosion and provides a solid base for your fifth wheel or gooseneck hitch. The crossmembers sit along the top of the frame rails beneath the bed, and the brackets mount securely to the outside of the frame. It’s built to handle the demands of towing without flex or rust issues over time.
The vehicle-specific design of this installation kit shortens setup time compared to universal systems. The brackets are shaped to fit the frame layout, requiring less drilling and less guesswork during install. All the rails and installation hardware are included, so you can get the hitch mounted right the first time without needing extra parts.
Designed specifically for Demco Underbed Mount Series (UMS) fifth-wheel and gooseneck trailer hitches, this rail kit ensures everything lines up exactly as it should. The fit and connection points are made to match Demco’s hitch lineup, giving you a secure, reliable setup rated for years of towing performance.
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