To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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.
The built-in automatic slider gives you an extra 14" of clearance when you turn, letting your trailer glide smoothly around tight corners without getting out to move a manual slider. The rack-and-pinion gear system inside the base handles this movement automatically, shifting the hitch head toward the tailgate during slow-speed turns and back toward the cab as you straighten out. It’s a simple way to make cornering easier and protect both truck and trailer during those close maneuvers.
The wraparound, single-piece jaw completely surrounds the king pin for 360-degree contact, giving a tight, no-rattle connection. A 3/4" thick solid steel locking bar reinforces that connection and automatically locks when the jaw closes. Together they cut down on movement and deliver a smooth, quiet tow that feels secure over every mile.

The double-pivot hitch head moves front to back and side to side to help reduce chucking and harsh feedback. Three polyurethane dampeners cushion that motion and soak up road shock, so you’ll feel less jarring from bumps or dips. It also pivots naturally as you hook up, tilting into position for an easier alignment with your pin box every time.
Installation is straightforward thanks to the included rail adapter that drops right into the puck receivers of your prep package. Once it’s locked in place, you can pin the preassembled base and bolt on the side plates. The adjustable height—15-1/4", 16-1/2", or 18"—lets you fine-tune for your setup. The spring-loaded handle with a comfort grip and tethered safety pin make coupling and securing the handle easy once everything’s in place.

With a gross towing weight rating of 21,000 lbs and a vertical load limit of 5,250 lbs, this solid steel hitch is ready for serious fifth-wheel towing. The rust-resistant black powder coat finish adds durability and keeps it looking clean even after long hauls. It’s a heavy-duty build that feels solid every time you back in and lock on.

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.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody. Andy here with etrailer.com. Let's take a look together at this Demco 5th Wheel Rail Adapter Now, this adapter is specifically designed to fit your 2016 and newer Nissan Titan XD with a 6.5 foot bed with the OEM integrated Gooseneck and then your 2017 to 2019 Nissan Titan XD with an eight foot bed, again with the OEM integrated gooseneck. Now, on custom fit parts such as this adapter, I do recommend taking advantage of our vehicle fit guide here at etrailer.com. Simply input the year, make, and model of your truck and our fit guide will confirm if this will work for you or if we have something comparable that will work for you. Now, this adapter is going to be perfect if you want to use your standard 5th wheel trailer hitch with your Titan XD truck's factory-installed underbed 5th wheel mounting kit.
This is going to let you use your 5th wheel trailer hitch that attaches to the standard above bed rails. However, I do wanna point out that this adapter will not work with the B&W Patriot sliding hitch. So just so you're aware of that. Now this is going to mount to the two OEM pucks. And then the center shaft that you see there, that's going to insert into the gooseneck ball hole in your Titan's bed.
So with this little bit closer underside view, hopefully you can see these pins here. Those pins are what's gonna drop into the the puck there, and then that center shaft is going to drop into that gooseneck ball hole. Now, this does use a ball bearing locking system. So right now I have it locked, but let me go ahead and unlock this. So this does include this thumbscrew with a washer.
So I'm gonna go ahead and remove that thumbscrew. And then if you just turn that slightly, taking another view close up, as you can see, hopefully those ball bearings are loose in there, so they're not secured. But after you have this dropped into place, into that puck system and into the gooseneck ball hole, you're just going to turn this latch like so. That's going to secure those ball bearings and make them to where they're not gonna be able to go back into the shaft. Insert the thumbscrew, tighten it down.
And then taking a closer look here, those balls are going to be secured into place. So hopefully you can see that. So this is made here in the USA of a rust-resistant black powder-coated steel construction. So this is very strong, very robust, very durable. This has a maximum capacity of 21,000 pounds. Instructions are included to guide you through the very simple installation process. However, I do wanna point out that even though this is going to be a very easy setup, a very easy install, this is a very heavy adapter. So you do wanna make sure that you have at least another person with you to help you lift this into your truck bed and then drop it into place. Well, I think that's gonna wrap up our look today. I do hope that our time together was helpful for you. Again, my name is Andy, thank you for joining me.
Ratings & Reviews
Worked good but a lot of adjustments. They sent the wrong capture plates. Demco customer support was great.
The hitch and adaptor arrived in three days. Everything went together fairly easy considering I had just torn my rotator cuff a week earlier and my helper never showed up. Definitely would have been easier with two people. Had planned a trip next week to Yellowstone National Park but will have to wait until after surgery. Will do a follow up review after I am able to see how well auto slide works. Great customer service!
Really like this hitch. Two things I don't like however, are 1) you need to backup almost perfectly the way you unhooked or it's a bear to hitch backup. 2) I don't like the bolts for the pinbox. Wish there was a quicker alternative. Hate getting a wrench out to tighten and losen.
Super service the product arrived with days . The package was a bit torn up due to the size and weight of it . However I unpackaged it and installed in my titan xd and dropped it in place and it fit perfectly no adjustments were required . The quality of this product exceeds of what I expected . By installing the Demco 5th wheel adapter saved me money as I was able to use my current 5th wheel head . Very pleased .. I would recommend this product .
I think that etrailer requires their employees to lie so as not to have any confrontations with customers on the phone. I placed two orders on 8/23 and immediately received followup emails that order received, order processed by (employee name) and then is in stock with associated time each step completed.
Then I noticed that shipping date kept getting 1 day later each day I checked order status. So, I contacted etrailer on day 5, 8/27 and find out my item was not in stock at all and would not be until mid Oct. Well,I then had them order me the same part by a different manufacturer and was told that it was in stock and would still be still be shipped 8/28 and delivered on 8/30, the same day my fifth wheel hitch is being delivered, so everything seemed rectified until I checked order status online the evening of 8/28 and find that the ship date again had been pushed back another day 8/29 with a delivery date of 9/1, (which is a Sunday). Seems that at this rate I may have it sometime in September. Going by their assurance of delivery on 8/30, I arranged to pickup my new camper on 9/5, that seems to be an impossibility at this time because Order #121389499 the installation kit with base rails is a very necessary part of the assembly. So, in closing I can only say that if you do not have the parts to ship, be honest and state the truth. This has made me feel very negative now toward etrailor as I already had become with Camping World. Is there any honesty in the RV parts aftermarket?
We received the hitch in great shape. The boxes were in very good shape. The only problem was a missing polyurethane dampener that was’t included. I called and received great service from etrailer. I have had a demco autoslide for several years but it was an 18000 pound hitch and went to a 21000 pound hitch. They are the best hitch for a shortened truck on the market
If you have to have a slider this is the one to buy. I’ve now driven with it about 5000 miles..the only down side is that you have to hook and unhook with the truck perfectly straight in line with the trailer. But it does work perfectly as advertised.

Richard
6/5/2019
Great, customer service with [Demco Representative] could not be any better..he knows this hitch like the back of his hand . I would buy another just because of him.
Extremely well made product and as always arrived in perfect condition. Etrailer is my go to for all things trailer related and is the first place I look!! They have the best prices around and stand behind every sale which gives me confidence in every purchase. I love this hitch and look forward to many years of towing with it! Thank you again etrailer!!
thanks to Greg S. he helped me a lot in choosing and answering all my questions
Very happy with the product. The only draw back is the weight. Can't be loaded/unloaded by one person.
A good cross-sell opportunity is to offer a tool for removal.
When I first got it, it didn't fit the truck. Support team was helpful and responsive. It seemed to be due to the bed spray. I was able to get it to mount perfectly by loosening a bolt under the truck, and then smoothing the edges of the locks in the rails.
It works really well. It is really nice not to worry about the 5th wheel trailer clearance when making tight turns. We pulled the rig several hundred miles last summer and at least 3000 more since January with no issues.
Also I used the height adjustment feature when setting up my trailer.
When I received the shipment I was impressed by how well it was packed. It would have been nice to had had help, but I was able to assemble and mount it myself. The instructions were good, and as I said, we have had no issues during our first snowbird season.
This is an initial impression review. The hitch was delivered on a pallet and arrived earlier than expected. Everything was well packaged with all associated hardware. This hitch was mounted on Reese Quick-Install Custom Outboard Installation Kit w/ Base Rails for 5th Wheel Trailer Hitches ( in the bed of a 2007 Dodge Mega Cab 3500. Overall it appears to be well constructed, unfortunately, I did have issues with bolting the hitch adapters to the hitch. The hardware is either grade 3 or 5 (looks like 5) and did not torque well. I had one bolt that stretched and sheared before I reached the torque spec (photo attached). I'm not sure if this was designed to use the weaker hardware or a business decision, however, all eight bolts were replaced with grade 8. I do look forward to utilizing this hitch in a few months. I would at photos, however it appears that I can't.
I purchased a 2019 Titan Diesel. The Demco Hijacker system was one of the few hitches to work on the Puck system. I had to get rid of my Ford F250 after so many mechanical problems and that hitch did not work on the Titan. Pulled my 5th wheel to go hunting last year with no problems. Have taken the hitch off and on with no problems. System works very well. Pleased with purchase. The slide works a lot better than the other hitch I had.
Works great except life would be so much simpler if they had a hole drilled on each side to remove the lock pins that are below it in the mounting plate to be able to remove the unit from the truck.

Jon G.
7/30/2021
Thank you for the review! While I do see where a hole in the mounting bracket would make this easier to remove with your Adapter Plate # DM6333, a solid bracket in this instance is much better for strength, especially considering this hitch is designed around the universal rails for trucks.
I had trouble with this hitch at first. I could not get it to close and latch properly when I backed into the king pin. I worked with tech services and ended up replacing the inner pivot parts and I have really not had any issues since. Because I have to have the locking plate for my pin box, you do have to line up the truck just right for it to latch properly, but once you figure that out, it is easy. The auto slide feature works really good. I have a short bed RAM truck and I have completely turned 90 degrees with my trailer attached and it slides back with no issues to miss my cab. I highly recommend this hitch. Also the Demco Tech Services guys are great to work with.
Best 5th wheel hitch ever for a RAM 3500 mega cab.
No issues with the RV coming close to the back of the cab or back glass.
I would recommend this hitch to anyone searching for a 5th wheel hitch for a Ram mega cab, I wish I knew about it when I first purchased my Ram mega cab, I learned the hard way, after busting out my back glass...and trying several hitches. This hitch is truly an autoslide. I have showed several short bed guys this hitch and told them the cost of the 5th wheel hitch is worth it.... It is top of the line. This will be the last 5th wheel hitch I will ever need to purchase.
Built very heavy and hooks into the titan xd factory puck system with no issues. Very nice product would definitely recommend for anyone looking to connect a fifth wheel trailer to their titan
This puppy is HEAVY! This is a good thing for durability, but no fun when installing.
My Demco Hijacker Autoslide mated nicely with this rail adapter and the connection feels solid.
The only suggestion that I would make to Demco (who make great products) would be to put two locking fixtures on the two smaller puck sites like other manufacturers. What they have is two very solid pins that fit into the two accessory puck sites, but do NOT lock in place. I guess that there is not much upward movement from the fifth wheel due to the significant tongue box weight, but the extra security would be nice.
Great hitch. No capture plate to deal with, you can hook up to any 5th wheel. No more greasy pin box. No more watching the mirror wondering if your going to hit and damage the cab of your truck. Works perfectly. Built solid, though I did purchase the 21K for a 15K 5th wheel. Easy to lube. The only drawback I had was that it sat just a little bit high in the truck even on the lowest mounting holes. If you are thinking of purchasing this you may want to take some measurements first. I have an 08' F350 SD with air springs so it does set high. Before I bought it I called the factory (easy to reach and eager to help) and asked them, among other things," if the hitch broke, could I easily get parts for it?" They replied that if you need parts we will get them to you wherever you are. Overall I think this is the best hitch on the market.

Joe W.
10/26/2018
After about 6000 miles the hitch developed some fore and aft movement. After another 2000 miles it seemed to be excessive with a loud clunk when stopping and starting. Yes, I do grease it as per instructions before each trip. I called Demco and told them the problem and they sent me the parts I needed at no charge since it was under warranty. Since I had the mechanical ability I disassembled, diagnosed and repaired it myself. I thought later on that I should have been compensated something for my time only because if I took it to a dealer they would have charged for labor. Just a suggestion, there needs to be an easier way to lubricate this hitch rather than removing the large pivot pin and also the large pivot bolt and greasing them by hand. Some well placed grease fittings would make this job a lot easier and cleaner, especially when on the road. Also, the hitch owner would be far more inclined to do it. Other than that the hitch has performed great and I am very happy with it. Thanks.
I ordered this hitch for my 2018 Titan XD. Very well made hitch. This install does take about 2 hours if you are assembling it by yourself. The parts are heavy as due expected for such a solid hitch. I did find that installing the base plate to the factory gooseneck hitch with a drop in bed liner does require removing all the shims from underneath the plate. If possible, assemble this hitch in the bed of the truck. The parts assembled complete makes for a very heavy hitch to put in the bed by yourself. I had to due to storms the night I assembled it. Due to shipping damage, I had to get replacement parts sent to me but Lori was very fast to get them to me. I pull a 13.5K trailer and it worked flawlessly. I am very, very pleased with the finished product as well as the excellent customer service from etrailer. You will NOT be disappointed.
This is a quality piece of equipment. I can't wait to use it. The installation directions were complete and easy to follow. Looks fantastic.
Great product, item was as described and fit was perfect.
Fit perfectly into truck bed & my existing 5th wheel hitch fit into the Demco rail system as well
Easy to install andI am satisfied with the product
This review is for the Demco Autoslide 21k and accompanying OEM rail adaptor I purchased for a 2020 Ram 3500 Megacab DRW. I've owned it one year. Overall, the hitch performs as I expected. It is high quality, very sturdy and seems like it will last for a long time. I had it installed at the dealer when I purchased the truck. It automatically slides to protect the cab in my 6'4" bed without any incidents. I tow a standard fifth wheel RV. There are a few negatives, which are not necessarily shortcoming of the product but, instead, necessary evils to allow me to have a short bed. First, it is BIG and BULKY. I believe this is just a function of the mechanism required to allow the autosliding feature and I am not really sure there are any other lighter alternatives with this feature. The fact it requires two parts (OEM Puck Rail and hitch), make it even more bulky. It takes up almost the entire bed and prevents most auxillary tank / tool box combos from fitting. Even standard size storage bins will not fit in my bed. I would prefer if they had a custom OEM all-in-one hitch for my truck like they do for the Ford. It adds significant weight, which decreases carrying capacity, which can be at a premium in hauling a heavy fifth wheel. I've never even tried to take it out of the bed due to the weight and difficulty. I also am not very happy with the adjustable catch plate design. It requires significant manipulation loosening and tightening 8 nuts when hitching and unhitching. This requires a step ladder to reach the nuts. I also found out after the fact that it does not come with the right size catch plate attachments for my hitch and I had to purchase a separate part, which added unexpected expense and delayed my taking the RV on its first trip. Overall, I am satisfied with the 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.




Sierra K.
9/1/2021
In the description it says locking plates, sold separately, are required for the Rota-Flex Pin box that you have. Item # DM6171