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The Demco Autoslide takes the stress out of tight turns. Its built-in rack-and-pinion gears automatically slide the hitch head back up to 14" whenever you turn, giving your trailer the clearance it needs at slow speeds. That means you don’t have to get in and out of the truck to move a manual slider—just drive and let it handle the motion smoothly and in control. When you straighten out, it glides right back into position for towing.
With a gross towing weight of 21,000 lbs and a vertical load limit of 5,250 lbs, this hitch is built from solid steel to handle big fifth-wheel trailers with confidence. The 3/4" thick locking bar and single-piece jaw reinforce the connection so your setup feels steady mile after mile. You can count on its rust-resistant black powder coat to hold up through seasons of towing.
The premium wraparound jaw completely surrounds the king pin for full 360-degree contact, creating a tight, secure fit that helps cut down on rattle and chucking during travel. The solid locking bar automatically engages when the jaw closes, so you know the trailer is latched in. It’s a simple design that feels locked-in every time you pull away.
The double-pivot hitch head moves both front to back and side to side, easing hookup from different angles and helping absorb road shock once you’re rolling. Three polyurethane dampeners cushion those pivots to keep noise low and motion steady over bumps or uneven pavement. It’s a small detail that makes long towing days feel smoother from start to finish.
Installation is straightforward with custom brackets and base rails included. Once everything’s in place, you can choose from three hitch height settings—15-1/4", 16-1/2", or 18"—to match your pin box height and keep your trailer level. The diamond-plate tread on the base adds a tough finish that looks sharp while keeping footing solid as you work around the bed.
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.
Alternate Instructions
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, neighbors. Steve here with etrailer.com. Today we're looking at the Demco Premier Series custom mounting brackets for your 5th wheel above-bed base rails. Now folks, this is a custom-fit application. Those bed rails when they're installed would look something like this. Again, those are sold separately.
That's part number DM6071. And again, those will sit in the bed and allow the installation of your fifth wheel trailer hitch on top of them. Again, the brackets today, folks, are custom and they mount beneath the bed of your truck to provide that attachment point for those rails. Now folks, this is a custom-fit application on the brackets. They're fitting between 2009 through current year RAM 1500 and Dodge Ram pickup trucks, all bed lengths.
But please check the fit guide, etrailer.com, top center of the homepage. Make sure you're getting the right parts for your specific vehicle. It's gonna ask you for year, make, and model, cab length, bed size, truck size, those kind of things. Make sure you're getting the right parts the first time. That being said, folks, the custom brackets again, are gonna mount to existing holes in your vehicle's frame.
It's gonna minimize drilling to very, very little. That's gonna reduce installation time and it avoids known obstacles along your truck's frame. It's a nice, sturdy, heavy-duty, steel-coated, black powder coat. It's gonna resist corrosion, rust, that kind of stuff. As you can see, all the brackets are marked.
Let's see, driver, passenger, rear, rear, the side ones. You got the front passenger and the driver front passenger. Or driver front. Different shapes on these front ones. So just a quick view of those. And again, you're getting all the mounting hardware. You get a couple fish wires here included. Those are for threading the bolts onto there and pull it through the frame. You got some lock tight included or blue thread lock. You get all the hardware, again, as I mentioned, needed to install this directly into the frame of your pickup truck. Everything's made here in the US. It's got a great five-year limited warranty. And again, folks, these do work with the base rails, and those base rails are sold separately. Part number DM6071. Well folks that's gonna wrap it up for our look at these Demco Premier Series custom mounting brackets. I'm Steven, thanks for watching.
Ratings & Reviews
Bought for use on my 2019 Ram 2500 shortbox because I was having clearance issues while turning. I could barely make a 45 degree turn. Installed the unit in about an hour from delivery to finish. Have an extra guy or two to help cause its heavy. I can know back 90 degrees if I had to with about 4-6 inches of cab clearance
This sliding hitch is great. I have no worries about my fifth wheel crushing my truck cab. It's the real deal.
Purchased a heavier 5th wheel so this one replaced my pull rite. No more capture plate to deal with. Very happy with this hitch.
I have not received the Autoslide trailer hitch only the locking plate.
When will I get the hitch??
I wish the place I bought my camper would have recommended this from the start. Makes owning a 5th wheel so much easier!
Good hitch but very heavy and hard to maneuver
If that's not an issue it works perfect
Don't have to worry about turning with 6,4 bed
Etrailer great job shipping , etc
Worked good but a lot of adjustments. They sent the wrong capture plates. Demco customer support was great.
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
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.
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
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!!
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.
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.
Has been a year since I had the DEMCO slide hitch installed in my 1500 Dodge Ram Eco Diesel. Can't say enough good things about how well this 5th wheel hitch performs. I like that one doesn't have to get different catch plates for each trailer, just remember to loose those plates up before loading. Load up the trailer and away you go. Never have to worry about those turns in your short bed pickup again. It may be a bit more spendy and a bit heavier, but well worth it. Going to move it to my new Dodge Ram 2500 Diesel, so all I need to get are new rails.
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.
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.
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.
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.
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.
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.
Best thing I bought for mounting the hitch that I have just fantastic product.
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Darrel
1/17/2023
I firmly believe that every fifth sold should have one of these hitches. It is a job getting it in and out of truck but I feel better knowing its not going to let my trailer damage my truck.