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This hitch is engineered for serious towing, with a 21,000-lb gross towing weight and a 5,250-lb vertical load limit. The solid steel construction and rust-resistant black powder coat finish give it the backbone to haul heavy fifth-wheel trailers with confidence. The diamond-plate tread on the base adds grip and durability while giving it a tough, finished look that matches its capability.
Back into tight campgrounds and make slow-speed turns without ever touching a manual slider. The built-in rack-and-pinion gear system automatically provides up to 14" of travel when you turn, sliding the head toward the tailgate and then back again as you straighten out. Each movement is controlled and smooth, letting you focus on maneuvering instead of jumping in and out of the truck to release a lever.

A strong wraparound jaw completely surrounds the king pin for full 360-degree contact and less rattle than slide-bar designs. The 3/4" thick solid steel locking bar reinforces that connection by automatically locking in place when the jaw closes. Together they keep your trailer steady and secure so you can enjoy a quieter ride with less chucking on rough stretches of road.

The double-pivot hitch head moves both front to back and side to side, making hook-ups smoother even on uneven ground. Inside, three polyurethane dampeners absorb road shock and cut down on towing noise. You’ll feel less jarring through the truck and more control when pulling over long distances or rough terrain.
Getting this hitch ready to tow is straightforward. The included rail adapter drops right into your truck’s factory puck receivers—no extra brackets or drilling needed. From there, just pin the hitch base to the rails, bolt on the side plates, and attach the head. Three height settings—15-1/4", 16-1/2", and 18"—let you dial in the right fit for your setup before you hit the road.

This fifth-wheel trailer hitch is not compatible with Sidewinder or Revolution king pins. Do not use any device that changes the pivot point of your trailer's king pin with this hitch.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Jeff: Hello, everybody. This is Jeff from etrailer.com. Today, we're going to take a look at this Demco 5th Wheel Rail Adapter for the Chevrolet and GMC OEM 5th Wheel Towing Prep Package. Has a 21,000 pound weight capacity. Now this is a custom fit part. It is designed to fit the 2016 to 2019 Chevrolet Silverado and the GMC Sierra 2500 and 3500 trucks with the six and a half foot bed and the factory rail kit.
Basically, this will convert your factory-installed, under-bed fifth wheel mounting kit from Chevrolet or GMC to a standard above-bed, fifth wheel base rails. So it will let you use your fifth wheel trailer hitch that attaches to the standard above-bed rails.This does come just like this as all one piece. There's no assembly required, and it is designed to mount to the OEM pucks or the sockets that's in your truck bed. Basically this whole unit will just drop into the four pucks and the center ball hole, and it locks into place. There's no drilling or welding required.
Basically to install it, just remove the puck covers from the factory kit in your vehicle. And then what you'll do is remove this thumb bolt right here and the washer. And you'll just turn this turnplate till it's parallel to the rails, and that'll release the ball bearing system that's in the shank on here.So when you go to drop this in, the pucks will drop into place, and this will go right into the ball hole. And then to lock it, you just take this turnplate here, turn it a quarter of a turn till it goes front to back, take your thumb bolt with your washer. Line it up with one of the holes and then just go ahead and tighten that down.
And when you tighten that down all the way, that will lock that ball-bearing system that's in the shank and keeps us from coming out of the ball hole.Now, this is a rust resistant black powder coat steel construction. It is made in the USA. Specs again on this, it'll fit the Chevy or GMC trucks that have the OEM under-bed base rails and the six and a half foot beds. Now, if you do want to get this adapter to work for an eight foot bed truck, we do sell that part separately. It is part number DM6206, and that'll fit the eight foot bed trucks.
Again, the maximum capacity on this is 21,000 pounds. And one last note on this adapter is this will not work with the B & W Patriot Sliding Hitch. But that should do it for the review on the Demco 5th Wheel Rail Adapter for the Chevrolet and GMC OEM 5th Wheel Towing Prep Package.
Ratings & Reviews

Frank
3/12/2024
The product has exceeded my expectations. I have had no problems with this product at all. I is low profile enough that when I take out my 5th wheel hitch I do not have to remove the Demco product.

Joe W.
10/26/2018
After about 6000 miles the hitch developed some fore and aft movement. After another 2000 miles it seemed to be excessive with a loud clunk when stopping and starting. Yes, I do grease it as per instructions before each trip. I called Demco and told them the problem and they sent me the parts I needed at no charge since it was under warranty. Since I had the mechanical ability I disassembled, diagnosed and repaired it myself. I thought later on that I should have been compensated something for my time only because if I took it to a dealer they would have charged for labor. Just a suggestion, there needs to be an easier way to lubricate this hitch rather than removing the large pivot pin and also the large pivot bolt and greasing them by hand. Some well placed grease fittings would make this job a lot easier and cleaner, especially when on the road. Also, the hitch owner would be far more inclined to do it. Other than that the hitch has performed great and I am very happy with it. Thanks.

Ted
9/26/2020
Best RV Mount imagineble

Roger
12/14/2019
Everything about the Demco adapter works as advertised. A great product. Since February of 2019 we have towed our fifth wheel about 10,000 miles without any problems. Thank you for a great product.

Becker
2/4/2020
Working great

Jon G.
7/30/2021
Thank you for the review! While I do see where a hole in the mounting bracket would make this easier to remove with your Adapter Plate # DM6333, a solid bracket in this instance is much better for strength, especially considering this hitch is designed around the universal rails for trucks.

Dave B.
3/1/2021
Still happy with it, its very easy to put in and take out.
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Perfect S.
6/3/2020
Solid!