To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
The Curt A25 is rated for a gross towing weight of 25,000 lbs and a vertical load limit of 6,250 lbs. That kind of strength gives you the confidence to pull large 5th-wheel trailers and toy haulers mile after mile. It’s built from sturdy steel with a durable carbide powder coat finish that holds up against weather and road grime, season after season. This hitch delivers the solid feel you want when towing heavy over long distances.
This hitch uses an interlocking 2-jaw system that wraps fully around the king pin for 360-degree contact. That tight, even grip cuts down on rattle and movement you’d get with a slide-bar design, giving you a quieter and more stable ride. The jaws lock firmly for consistent coupling, so every time you hook up you get the same solid feel—no guessing, no clunking, just a smooth connection that inspires confidence.
Curt’s color-coded indicator takes the guesswork out of coupling. Red means uncoupled, yellow means ready to couple, and green means locked in for towing. The indicators are easy to see from the cab or beside the bed, so you can confirm your setup with one quick glance. And when you unhook, the handle resets itself to the ready-to-couple position automatically—one less step before your next trip.
When maneuvering at slow speeds or backing into tight sites, the included S25 slider gives you 12" of front-to-back travel for extra clearance between truck and trailer. It slides easily without binding and automatically latches in both directions so you can focus on steering instead of fiddling with release handles. That extra pivot room makes short turns smoother and safer when space gets tight.
Clearing your bed doesn’t have to be a chore. The A25’s head lifts off quickly with a single pin, making it easy for one person to handle without extra tools or lifting gear. Built-in zerk fittings keep maintenance simple, and the included plastic lube plate helps the king pin glide smoothly into place during hookup. It’s a user-friendly design from install through every trip that follows.
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
The quality of the kit is very good. Materials are heavy and well packaged. The paper instructions are a little vague about where to put the U-shaped washers. On youtube, Curt has a installation video for a 2015 F350, but make sure to watch the whole video. At the beginning Curt suggests putting the U-shaped washers between the mounting rails and on top the truck bed-then cuts to a different clip suggesting an alternative location, which is between the sheet metal on the underside of the truck bed. The U-shaped washers should be installed on the underside of the truck bed where they function as spacers between the sheet metal and will prevent crushing the corrugations of the bed. I installed my kit without removing the rear tires or dropping the spare tire.
I put this on my 2015 F-250 mostly by myself yesterday...BTW, ordered on a Monday late evening and had product on my property Friday noon with regular free shipping!
Definitely used the video to help with installation. It really helps to have a jack that gets the vehicle high enough to work on to give you some room under the truck...(Don't forget safety jacks too!). Impact wrench is a huge help--saves time, so if you can have one for this job it is a pleasure! I used my Milwaukee 1/2" M18 impact wrench a lot. Need to take wheels off, drop spare also. The whole job, including Curt A16 5th Wheel and harness took about 4 hours for me, with some help placing bolts so I wouldn't have to go under and over to the bed a bunch of times. Two people is better, but can do by yourself.
Quality seems to be good and fitment is very nice. Great job all around etrailer.com!!
The custom fit rail and bracket assembly for me was a no brainer. I am good at putting things together and by trade a maintenance tech. I was able to put it in the truck in the 4 hour time frame but not as instructed. The brackets fit great. The rail placement was easy to understand but the hole came out on the edge of the small humps in the bed. This means careful drilling to keep it straight. It is not possible to use a step drill as stated because of the truck rail under the bed. If you did use one the hole on the bed would be larger than needed. If the rail was about 1 1/2 longer it would come out in the center of the humps and make for a very easy placement. This is the manufacturers problem. It still came out great and I am happy with my purchase. I hope to pick up my camper next week.
This is the 2nd time I have installed a Curt Custom 5th wheel installation kit. This time it was for a 2014 Ford F250 short bed. As usual the customer service and delivery was outstanding. I watched the video and read the instructions and installation was very uneventful. No missing or spare parts ! Took about 3 1/2 hours and I was working alone. The custom brackets are the only way to go! Installed my sliding hitch and took the 5th wheel on a test drive. I have been an etrailer customer for years and have always received exceptional service and fast delivery !
The only thing I found with this kit is that the brackets do not completely isolate the hitch plates from the body, the brackets and shims actually squeeze the body floor to the frame brackets. The body then cannot move or flex as it should!
All the brackets, shims, nuts bolts and washers are good quality
haven't towed yet, be several weeks before we get trailer ! watch video and read instructions several times, get some body to help and go for it. installed on 2011 ford crew cab, 4x4, gas engine,short bed. Did not take wheels off or drop spare tire. took us 4 hours, that included fifth wheel assemble. getting torque wrench in there was a little tricky, but do able. only holes we drilled was on truck bed, side plates fit up perfect. real heavy duty. all hardware was there, box showed up in great shape. every think fit up great, very pleased
This was a perfect fit. Made installation so easy rather than generic installation kit. The holes matched perfectly for my 2015 F350 6 1/4 ft. Bed. Easy to follow instructions. Took about 3 hours to install everything. I also purchased the Curt slider hitch.
Once I got the rails installed in my 2016 FORD F305( with plenty of ease) almost immediately I went pick up a fifth wheel travel trailer (approximately 14,500#) stopped once to check the hardware, HAD ABSOLUTELY NO ISSUES WITH ANY OF THE HITCH. Thank you for such a good and dependable product, and yes I have even recommended it to others.
Earl Breaux
The kit was a exact fit for my 2011 f-250 truck. I will be purchasing other items from etrailer . Shipping was fast and delivered ahead of time.
Been happy with the product overall. Chain is already rusted and I live in San Diego where it doesn't rain much. When detaching, I find I need to move the truck up and back a skosh (sp?) to release the clamp. this is my first purchase so they may all do this. I have a 8 foot bed and pull a 40 foot 5th wheeler and would probably purchase again.
Wonderful Product. Installed easily in only 2.5 hours! Love it! The product is Great, however the service at etrailer.com is AMAZING! Terrific experience, incredibly fast shipping and a really competitive price! If I need it, and etrailer.com sells it, I'll buy it from them!!!!
Arrived a few days later than I hoped, however, I have installed the in/underbed parts, yet removed the in bed parts in preparation for a spray-in bed liner. Easy instructions, just follow the measuring instructions diligently and recheck measurements several times before cutting/drilling. I left the underbed parts installed and the fish wire provided makes installing the forward driver side bolt a breeze. Easy to install!
Very pleased with etrailer.com. All product information and reviews help make decision very easy. Very quick delivery and installation instructions are very easy to follow. Purchased 5th wheel hitch and custom wiring extension for my 2014 F250.
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.
Purchased this hitch, install kit, and wiring harness for a new to me 2015 F-250. After watching the installation video and reviewing the included instructions the install went smoothly. The only deviation from the instructions was instead of using a unibit to drill the 9/16" holes in the bed I used a Rotobroach hole cutter(the holes are cleaner and the bit does not drift. I hooked in to my fifth wheel for the first time on Saturday.
2016 F350 crew standard box. Installation went well with the videos help in about 3 hrs. The bolt leader provided really helped on the driver side.
The installation is straight forward. With a helper it took about 6 hours to install. With the hitch set at it lowest height was able to close my bed cover.
GREAT product, GREAT price, GREAT folks to deal with! Installed easily, followed the online video and everything went together perfectly. I did move my gas tank vent line on the left side as I was afraid the center bolt head would rub a hole in it but not a big deal.
Etrailer is terrific!
2012 Ford F-250 - Fast shipping and easy to follow directions were included. Bed rails and side plates lined up perfectly. My truck has the line x bedliner so I added 1/8” when setting the first rail. I highly recommend using a step bit to drill your holes for the rails in the bed. No drilling was required for the side plates into the frame. Install by myself took 4 hours with no lift. Could definitely be completed faster with an extra hand or lift. Measure several times and drill once and everything will line up great. Highly recommend!
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.
The kit fit extremely well. With my wife and I doing the install it took about 3 hours but 2 hours were trying to reach a dropped bolt!!! Dropped one of the frame bolts inbetween the frame and the DPF tank. Other than that the install was fairly straight forward. Just went out and looked at the brackets and after a year still no rust on them. Definately would buy this again if needed.
Product was an exact fit for my 2016 F350 (I have Dual wheels but the kit fits both SW and DRW to my understanding.) I've paid up to $400 labor to have rails mounted in 3 previous trucks. This kit and the videos made me sure that I could do it myself, and I was right. Take your time, measure twice before drilling, and save some money. It took me about 4 hours, but only because I was being extremely cautious with a brand new vehicle. I did learn that the person that installed my previous hitch didn't follow directions as they put the spacers on the top of the bed instead of between the bed and the mounting plates in my previous truck. Getting the spacers in was the tricky part (and probably why the last installer I used didn't do it right). After seeing several other rail installations...I am much more comfortable with the way these mount to a solid rail bracket that is definitely secured better to the frame using heavy duty hardware and no drilling. Great product!
Great product and fit for a 2014 F250. Torque requirements are very high on the 3/4” bolts so you may need some help and a big wrench.
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