To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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This setup is designed for big fifth wheels that demand strength and steady control. With a gross towing weight of 20,000 lbs and a vertical load limit of 5,000 lbs, the solid steel build gives you confidence pulling serious weight. The carbide powder coat finish helps protect against scratches and rust over time, while the fully articulating torsion head smooths out road shock for a quieter, more stable tow.
The interlocking two-piece jaw wraps completely around the king pin for full 360-degree contact. That design cuts down on rattle and movement so the connection feels tight and controlled from the start. A glance at the three-point color-coded indicator tells you what position the jaws are in—red for uncoupled, yellow for ready to couple, and green for towing—so you always know you’re properly locked before hitting the road.
For tight maneuvering at slow speeds, the S20 slider gives you up to 12" of front-to-back travel. That extra space helps prevent the trailer from contacting the cab during sharp turns. It automatically latches in both directions, meaning you only need to step out once to set it. The non-binding design moves smoothly even under pressure, giving you reliable clearance and a solid, quiet sliding motion every time.
When you’re done towing, clearing your bed is simple. The fast one-pin head removal lets one person lift off the top section without tools, while the hitch base drops right into puck receivers and locks in place with quarter-turn anchors. The modular design makes storage easier on your back and keeps your truck ready for whatever comes next.
Keeping this hitch in top shape is straightforward thanks to two built-in zerk fittings that make lubrication quick and clean. The included plastic lube plate helps the king pin glide smoothly into position during hookup. Combined with its sturdy steel frame and limited lifetime warranty, this setup is built to last through countless miles of towing.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at this Curt 5th Wheel Adapter Rails for your Chevrolet and GMC trucks that have the factory 5th wheel prep package. Now, this is a custom fit part, it is designed to fit the 2016 to 2019 Chevrolet Silverado and GMC Sierra 2500 and 3500 trucks with the OEM prep package, and on a custom fit part like this, I do like to recommend for you to go to our website, use the fit guide, put in your year and model vehicle, and it'll show you if this will work for your application. Now, this will let you easily transfer your existing 5th wheel hitch from a previous truck to the new factory underbed puck equip trucks. This will convert the factory underbed system to the standard 5th wheel base rails. Now, they do use a quarter-turn anchoring system for quick installation and removal, wanna zoom in to show you a close up of that.
We're just gonna do one corner, but you'll do this at each corner, there's four corners. But basically, when you go to install this, what you'll do is pop off this clip, and then you'll rotate this handle out a quarter of a turn, and when you do that, if you noticed right down here, this tab is rotating also, so that'll open it up. You'll do that at each corner, and now, you're ready to drop this whole system right into the underbed factory system. Once you drop it in, the tabs will drop into place, you'll rotate this handle back just like that, and it rotates that tab to lock it in, and again, you'll do it at all four corners. Once you get it locked in, put your pin and clip back in, and that locks the handle in place, you're all ready to go.
You can also adjust the anchors right here, these can be adjusted to help eliminate any chucking between the legs and the underbed platform, right here you can put a wrench in here, there's a cotter pin that you can pull out, put a wrench in here, and tighten it up or loosen it, whatever you need to. Now, this does also include the four pins and clips that'll allow you to secure the 5th wheel to these adapter rails. Again, the specs on this, it is designed to fit the Chevrolet and GMC trucks with the 5th wheel prep package, capacity on this is 30,000 pounds gross towing weight capacity, and it has a 7,500 pound vertical load limit. But that should do it for the review on this Curt 5th Wheel Adapter Rails for the Chevrolet and GMC trucks with the factory 5th wheel prep package..
Ratings & Reviews
Best customer service I seen in a long time .
Verry satisfied with this company fast shipping!!!
quick and easy. Fits perfect.
Representative very helpful with the order to make sure I was getting the right part of my truck. Order package well and ship on time and receive in the 3 day delivery window.
Thank you
The shipping was fast. Ordered late Sunday and got it by Wednesday with the free shipping.
Don't really know how this works since the base was lost in shipment and I had to send the head back because I actually needed something that I could hook the fifth wheel to. Ended up spending quite a bit more money to resolve the matter out of town with no options.
Installation went smoothly, havn't hooked up to trailer yet but everything seems to work smoothly. Hitch delivery was a day early.
It is working as expected and as design ed
Not installed yet service excellent thanks for your help
It was nice to get all the instructions from start to finish. From the purchase to the install went great
Easy to assemble and install. Item is heavy gauge steel and very well constructed. Only downside is the removal and re-install of the cotter pins for adjusting the hold down locks. Small hitch pin clips would make adjustment easier.
I'll post back after a 2000 mile haul with the 40 RV. Looks good so far...
Have a great day everyone!
Amazing product fit perfect with no issues whats so ever being that this kit is for a none fifth wheel truck option and was able to easily install with no problems, We have owned it over a year and still looks new and works perfect we tow a 44 feet RV very often with no issue and really recommend this product hands down !!!!!
The product worked just like it was suppose to. The only problem I had is when I took off from a stop there was a looseness. I could not tell if it was from the 5th wheel or the puck adapter. I will have to research it more.
Awesome product! Directions easy to follow and installation was a breeze. Highly recommend!
Arrived fast works well
The hitch has worked very well. It is very sturdy, and I have had no problems. I would recommend this to someone with a short bed for the ability to slide the hitch.
Exactly what I ordered. Free shipping and only less than a week and it's in hand.
First, the is a very heavy duty hitch. I watch the etrailer videos and the installation was simple. No issues at all. Second, I order from Matt who was very helpful an knowledgeable on the product. He said it would be delivered in two days. I laughed but low and be hold it was delivered in two days and the packing was incredible. I Thank you Matt for all you assistance.
Easy to install and works perfectly!
This was an easy install. Very heavy and ready to pull my trailer!
An excellent experience with etrailer.com
Gwendolyn Y.
4/17/2025
The New hitch looks great in your truck, Frank! Have you taken it out for a spin yet?
Gwendolyn Y.
4/18/2025
Cammi, my customer support person was awesome. I told her what I needed and she recommended to perfect hitch. I was impressed with her knowledge of their products and how fast it was delivered. Installation was simple as long as you follow the very well written directions.
Brooke M.
2/5/2025
Cammi is going to love to see this review, Scott. Thanks for taking the time to write it! Ill be sure she gets to see it, and Im so happy to hear installation went off without a hitch! ;) Please let either me of Cammi know if we can help you out with anything else!
Scott
2/2/2026
My hitch is working great still. Easy to use no issues.
I previously owned the Curt A16. We needed a larger tow capacity so we purchased the A20 and decided to buy the S20 slider base as well. Too many sharp turning issues with our 6’8” Chevy standard bed HD3500 during maneuvering. The S20 slider should eliminate this issue. Also I love the design of both the A20 and S20.
Harvey
4/8/2026
This was a great purchase and it’s made backing into tight camping spots so much easier. 100 satisfied with this hitch and slider system!
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Matt
7/9/2026
One year and zero issues after many trips pulling our 43ft toy hauler.