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This hitch takes the stress out of tight turns. Its automatic slider gives 14" of fore/aft travel, gliding smoothly on a rack-and-pinion gear system whenever you turn more than 10 to 15 degrees. No need to jump out and move a lever before backing into a campsite or parking lot. The head slides toward the tailgate when turning and back toward the cab when straightening, giving you the clearance you need while keeping motion controlled and quiet.
Built for serious towing, this hitch handles up to 18,000 lbs gross towing weight and 4,500 lbs vertical load. The single-piece wraparound jaw completely surrounds the king pin for 360-degree contact, while a 3/4" thick steel locking bar reinforces the connection. That tight fit cuts down on rattle and chucking, giving you a secure link that feels steady mile after mile.
The double-pivot head flexes front-to-back and side-to-side to match your trailer’s movement, making hookups smoother even on uneven ground. Three polyurethane dampeners absorb road shock and help quiet things down while you’re on the move. It’s a simple design that results in less jarring through the truck and trailer so long drives feel more controlled.
Getting this hitch ready to tow is straightforward. The included rail adapter drops right into the factory puck receivers and pins in place for a stable base. Once it’s in, you can bolt on the side plates and set one of three hitch height options—16-1/2", 17-3/4", or 19-1/4"—to get your trailer level and maintain bed rail clearance. When not in use, loosening the outrigger bar assembly keeps the hitch snug so it doesn’t move or slide around during storage.
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.
Alternate Instructions
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hey, guys. This is Jake here with etrailer. Today we're gonna be taking a look at the Demco OEM GM Puck System Rails. These are gonna drop directly into the factory puck system on your GM truck. So, that's Chevy or GMC. And it's going to have two different rail options.
The only one that you're missing is the widest rail option. So, most of them are going to fit in the two center ones. There are some wider kits that have higher capacities that'll fit in these outer ones. This rail kit is gonna have a capacity of 25,000 pounds. Has a nice, thick black powder coat finish, that's gonna help resist rust and corrosion.
Demco does a really good job with their paint jobs. It's textured, so things are gonna be more likely to slide off of it, than to grab onto that paint and cause any scratches or chipping. One of the nicest thing about this kit is that it's gonna drop directly into your puck system. You can lock it in by pulling these levers. Something I like about these is that the levers actually have a direction that they're supposed to go in, and then you can put the pin in to lock them in place.
I will say, if you have trouble getting these latches to match up to the pucks in the floor of your the bed of your truck, what we did was we just loosened these four bolts on each of these brackets, and then it was able to move just the slightest bit to get them dropped down in place, and then we torque them down again. So, once you get it set, it's great. I like it because you don't have to make the initial investment of getting a new fifth wheel hitch just to match it to your truck bed. If you like to get trucks every couple of years, a lot of people don't like to put a lot of miles on their truck. They'll get a new one.
If you get the same truck, you can take this set of rails, put it in the new truck bed, and it match up great. If you decide to go with a different brand, you just have to get a new rail kit. You don't have to get a whole new fifth wheel hitch. Well, guys, hopefully this video helped you decide whether or not the Demco OEM Puck System Rails is gonna be right for you and your vehicle.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Vince
7/4/2025
After a year of operating with this product, I give it 5 stars. Well made, simple to remove and reinstall when you need your truck bed, and it actually provided the perfect amount of extra height to refine the fifth wheel assembly. No chunking or excess noise while towing. Highly recommend for those needing such a rig.
Kate F.
7/7/2025
Matthew
4/22/2025
The adapter plate has held up really good after a year. We tow a 12k fifth-wheel once a month and travel anywhere from 5 to 600 miles per trip. Great product.
Jon G.
5/6/2025
Brooke M.
4/16/2025
You're welcome, Randy! Everything looks awesome and ready to go! Where were you headed in the photo?
John
4/25/2022
Its been a year and about 5,000 miles. Overall The Demco works well. I dont like noisy, clunking fifth wheel hitches. With some shim adjustments I am able to keep the Demco plate snug in the built-in GM adapter.
Mike G.
9/15/2019
This hitch has worked well for me. It is now used in a 2018 GMC Sierra 2500. It is just tall enough that I can see it in my rearview mirror to make it easy to get lined up with the kingpin
Jon G.
9/27/2019
James
12/7/2025
Still very happy with this adapter one year out. No problems at all.
John
7/17/2023
Still working great!
Do you have a question about this 5th Wheel Hitch?
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Lazer S.
3/10/2026
Glad it wasn't too difficult! Even with it being as heavy as it is. What kind of hitch are you using this with?