To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
This setup is made for the big trailers—rated for 25,000 lbs gross towing weight and a 6,250 lbs vertical load limit. The sturdy steel build and carbide powder coat finish give it the backbone to handle heavy-duty miles. You can feel how solid it is when the jaws lock around the king pin—no looseness, no guesswork, just a firm, confident connection every time you hook up.
Before you roll out, a quick glance at the 3-point indicator shows exactly what’s happening inside the hitch—red means uncoupled, yellow means ready to couple, and green means you’re locked for towing. The system is visible from the cab, so there’s no need to climb in and check. The handle locks with a padlock (sold separately) and automatically resets to the ready-to-couple position after you unhook, keeping things simple and secure on every trip.
The torsion head design uses a spherical axial bearing that pivots smoothly in every direction. That flexibility keeps the ride calm and steady across uneven roads and cuts down on clunking or chucking between truck and trailer. The interlocking two-jaw system wraps the king pin for 360-degree contact, tightening up the connection for less rattle and a quieter tow.
When maneuvering at slow speeds, clearance is everything. The non-binding S25 slider moves the hitch up to 12" front to back so your trailer has room to clear the cab during tight turns. It locks automatically in both directions, so once it’s in position you can focus on steering instead of hopping out to latch it again. Designed for trucks with beds shorter than 8', it’s a practical feature that makes day-to-day towing much easier.
When it’s time to clear out the bed, pull a single pin to lift off the head—no tools required. Two built-in zerk fittings make lubrication easy, and the included plastic lube plate helps the king pin slide smoothly into place during hookup. With adjustable height from 17-1/2" to 21-1/2", it sets up cleanly every time while staying manageable when you need it out of the way.
Alternate Instructions
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 the CURT Universal Carbide Black Finish Fifth Wheel Base Rails. Now, these base rails will install in your truck bed. And they provide the necessary attachment points for your fifth wheel hitch installation. Now, when these rails are used with the CURT's Custom Mounting Brackets, which we sell separate on a website, these rails will cut in half the time it takes to install your fifth wheel trailer hitch.
We mentioned the finish on this. I'm gonna zoom in and sort of show it. It's a carbide black finish, sort of like a matte black finish, so it matches the finish if you use it on the CURT Q5 20K Fifth Wheel Hitch. Now, these rails are universal, so they will work with the following fifth wheel hitches. They work with the CURT brand, the Draw-Tite, the Hidden Hitch, the Reese, and even the Husky.
This part here will include the two base rails. Now, we mentioned the mounting brackets, the custom mounting brackets, the hardware, and an installation kit is all sold separately. The length on these rails, if we put a tape measure on them from one end to the other, right at 43 inches long. But that should do it for the review on the CURT Universal Carbide Black Finish Fifth Wheel Base Rails.
Ratings & Reviews
Great install! Had no issue with the installation of this unit. Directions were easy to follow. Great product and will be trying it out real soon 3975CK Crossroad Cameo 5th wheel!
E-trailer has detailed instructions and videos for anyone to install there on hitch.
The hitch looks strong enough but the installation was difficult for a man over 65 with big hands installed on my 2021 Chevy 2500.there were some very hard to get at places to get spacers and nuts on bolts took me 6 hours by myself probably would have been quicker and easier with two people.haven’t tried it yet will let you know how well it works.
No directions, but I’ve mailed them for directions. Fast! Excellent looking and heavy duty appearing parts with a hardware kit included! Excellent! Now let’s get some directions and get it put in.
The hole in frame that was supposed to line up with was about a 1/2" toward the back of the bed using the 28and 15/16" plus the liner on the instructions to the bed frame. I moved it back. Using the 1/8" to see where you will be is how I figured it out. Good idea.
I wanted to have the full side brackets (just my own insecurities) and didn't want to drill the frame. Instructions were good.
I order the items I need and they were immediately placed for delivery. I received hitch and slide quickly. Packages were shipped with care. Excellent instructions.
The time for install on the instructions is way off 40 min (professional) 80 min (DIY) I installed this kit on a 2025 3500 silverado long bed. It also has the factory overload springs whis also contributed to some of the issue. The left front cross rail bolts are on top of the fuel tank so it's a bit tight. The right side bolts are between the heat shield for the exhaust and the bed. I had to remove the shield to get access to the cross rail nuts. The U bolt was another issue as they were about 1/2" to long and would contact the springs when loaded. The last thing is I was shorted 1 carige bolt. Out side of that it's inatalled and seems to work as designed.
Works fine
Works well with my new hitch, Installation was not the easiest in the corner on the driver side closest to the cab due to the truck fuel tank.
Easy to install with Basic tools .
5 Star so far. Just revived the product, haven’t opened the packages to inspect yet. Will be this coming weekend when preparing to instal. I will advise in the event I should have any issues.
Worked really well. Especially like the one piece mounting bracket. Secure and easy installation.
I ordered this to install in my 2020 Silverado 2500. The install was easy and took close to 2 hours. Have not pulled my fifth wheel yet so really no idea how this will hold up. Everything was in the box nothing missing. Shipping took 2 days to get to my house. Very happy so far with everything I have ordered fro you.
I installed myself on my 21 GMC Sierra 2500HD, Denali, Duramax. Took me around 3hrs to do with basic shop tools. Over all the unit itself is very nice. Heavy well treated metal, bolts are all good quality. Not one single alignment issue. Sucks that the truck manufacturers can’t make some sort of pre setup locations as it was some tight finger tip spots. But that’s not to the fault of This item at all.
Fit perfect. Easy install if you’re han dy.
Put it in my self went great towed camper home today!
Easy to install and it works great.
Installed these bed rails on my 2020 Silverado Duramax 2500HD. Heavy duty rails and of good quality. Install time was around 3 hours. Definitely remove spare tire and heat shield. I did find it very difficult to torque 2 of the nuts on the driver's side front rail. Everything else no problem. I did spray some undercoating on the frame rail ends and nuts. Just did that for extra protection and it will make it easier to see if there is any movement when towing.
The Curt A25 5th Wheel Trailer Hitch with S25 slider worked perfectly on my 2024 GMC Sierra 2500HD Denali. Install was a breeze. Great pricing as well at etrailer.com.
I purchased this rail kit for a camper we bought. It’s fits perfectly with the hitch that came with the camper. I also bought the spider gooseneck adapter which works great with these rails!
This kit fit well and the installation instructions were very clear and easy to follow.
5 stars for the quality of the parts. Directions get you through but could be better. Video of installation makes it look way easier than it is. Took me 2 afternoons to complete the process.
Installed on a 2021 GMC Denali DRW. The installation instructions and video need to be updated they are somewhat miss leading as to the difficulties of install. The driver side front rail nuts are almost Impossible to install because of gas tank. They will be impossible to torque without dropping the gas tank. Your will also have to remove the dual rear wheels to torque the frame plates Took almost 5 hours to install. Other than that have yet to use hitch.
Product itself is really nice, well engineered and extremely stable in the truck bed. It's not as scratch resistant as I had hoped, I moved an electric oven and it really scraped the rails.
It does hold the hitch in place perfectly while towing, the holes and pin placement slots are spot on exactly like they should be. Mates really well with my Curt Fifth Wheel Hitch. Overall, satisfied with my hitch rails.
The only drawback is the installation.... OMGH! Was going okay until we got to the bolt that's on top of the fuel tank, could barely reach it and only get one millimeter turn at a time, then the torque wrench got stuck....
Just an ass-kicker!
But perseverance pays off and we got it installed and torqued to proper settings. Hope I never have to do that again.
Do you have a question about this 5th Wheel Hitch?
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.