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This underbed rail kit keeps your bed wide open once the hitch is out. The rails sit completely beneath the bed, leaving only four flush-mount holes on top. That means you can haul lumber, use a bed cover, or load gear without bulky rails in the way. It’s designed to work with Demco’s UMS 5th-wheel and gooseneck hitches for a clean setup that doesn’t take away your bed’s utility.
The brackets mount to the outside of the frame rails so you don’t have to fight with complicated frame drilling. The vehicle-specific layout lines up with existing frame points to cut down on install time and gives you a solid foundation for towing heavy loads. Crossmembers run along the top of the frame under the bed, tying everything together for strength.
Each piece in this kit is made from sturdy black powder-coated steel that holds up against rust and road grime. The seamless underbed design also helps protect the system from debris and weather exposure. All necessary rails and installation hardware are included, and it carries a 5-year limited warranty for added peace of mind.
If you’re using a Demco Hijacker Autoslide or another UMS hitch, this kit provides the right mounting points underneath your bed. It supports both 5th-wheel and gooseneck configurations within the same rail system, giving you flexibility whether you’re towing an RV or a work trailer.
Ratings & Reviews
Easy installation. Just follow directions. We’ll made.
These are very strong and helpful of being able to remove your hitch when not in use. Heavy Duty and out of site and with the plastic covers when the hitch is removed, you never know these are even installed. Comes with an awesome guide wire in order to bring the bolts to the holes through your boxed frame. Highly recommend these.
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