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This hitch is rated at 21,000 lbs gross towing weight and 5,250 lbs vertical load, giving it the strength to handle large fifth-wheel trailers on long hauls. The solid steel construction and rust-resistant black powder coat create a rigid, stable platform that feels secure mile after mile. It’s the kind of heavy-duty build you want when pulling serious weight through varied terrain.
The automatic slider gives you up to 14" of extra clearance when making slow-speed turns, so those tight campsite maneuvers don’t turn into cab-to-trailer contact. The rack-and-pinion gear system moves smoothly and automatically—no levers or manual release needed. As your trailer rotates up to 90 degrees, the hitch glides back toward the tailgate and then returns forward when you straighten out, all without jerking or binding.
The single-piece wraparound jaw fully surrounds the king pin for 360-degree contact, giving you a tight hold that reduces rattle and chucking on rough roads. A 3/4" thick solid steel locking bar reinforces that connection so the trailer stays securely coupled. With this setup, you get a smoother ride and extra confidence every time you pull away.
The double-pivot hitch head moves both front to back and side to side, automatically pivoting into position when coupling. Three polyurethane dampeners absorb road shock and cut down on noise from the hitch head movement. The result is an easier hookup process and a quiet, cushioned towing experience that feels steady over uneven pavement or long distances.
Installation is straightforward with the included rail adapter designed for factory prep packages. Just drop the adapter into the puck receivers, pin it in place, bolt on the side plates, and set your hitch height—15-1/4", 16-1/2", or 18". The diamond-plate tread base adds traction and style while the spring-loaded handle with tethered safety pin keeps coupling simple and secure.
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:
96% were satisfied with this product
4% 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
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.
James
12/7/2025
Still very happy with this adapter one year out. No problems at all.
Katrina D.
2/16/2024
Oh yeah, sliding hitches are way heavy! I always make sure to use a second person to help carry just half of one. It's definitely worth the weight though, your truck will thank you. We use a forklift sometimes to help us lift one to the bed of a truck.
Kevin
2/12/2025
Nothing changed other than I purchased a center hook to lift the hitch out of the base rail. It helps
Bryce D.
2/12/2025
Do you have a question about this 5th Wheel Hitch?
Info for this part was:
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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?