To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
This hitch takes the hassle out of short-bed towing with an automatic slider that gives 14" of additional clearance when turning. No more climbing in and out of the truck to pull a lever—rack-and-pinion gears move the head smoothly toward the tailgate as you turn and back toward the cab as you straighten out. The motion is controlled and consistent, so even slow-speed maneuvers in tight spaces feel predictable and stress-free.
The wraparound, single-piece jaw fully surrounds the king pin for 360-degree contact, giving you a secure, tight connection that cuts down on rattle and chucking. A solid 3/4" steel locking bar reinforces the hold, automatically engaging when the jaw closes. It’s a simple design that makes hitching up feel solid every time you back in.
The double-pivot hitch head flexes front to back and side to side to help reduce jarring and noise on rough roads. Three polyurethane dampeners cushion that movement—two built into the head for side-to-side pivoting and one underneath for front-to-back motion—so you get a quieter, smoother ride with less strain between truck and trailer.
The included underbed mounting kit keeps your bed rail-free when the hitch is out, giving you full use of the space. The side plates bolt on easily and offer three height settings—15-1/2", 16-3/4", and 18-1/4"—to help level your trailer setup. Once it’s in place, turn the handles to lock it down in the receivers or release them to lift it out when you need to clear the bed.
Made from sturdy steel with a rust-resistant black powder coat finish, this hitch is rated for 21,000 lbs gross towing weight and a 5,250 lbs vertical load limit. That strength gives you confidence towing big fifth wheels across long trips while keeping everything stable and under control mile after mile.
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.
Today we're going to take a look at the replacement side plates for the Demco Hijacker Autoslide fifth wheel trailer hitches, and this is for the underbed mount. Now this will replace the side plates that came standard with your Demco Hijacker Autoslide underbed fifth wheel trailer hitch. They are designed to bolt onto your hitch base so that you can attach your hitch to the custom underbed rails. This is designed to fit the 13,000 pound Hijacker, Part Number DM8550041. It also fits the 18,000 pound Hijacker, DM8550022, and the 21,000 pound Hijacker, DM8550037 models. This is a simple bolt-on installation to your hitch base. There are multiple rows of bolt holes on these side plates and on your hitch base, so depending how you line them out, it will let you adjust the hitch height.
The hitch height settings will go from either 15-1/2 inches to 16-3/4 and 18-1/4, so you have your choice of those three settings to get your trailer and tow vehicle as level as possible. These do have a rust-resistant black powder coat finish. They are an all-steel construction. It does include the instructions. It will include the mounting hardware, and it also includes two 1/4-inch spacers and two 3/8-inch spacers, and the spacers are used for adjusting your hitch mount with the bed pockets of your truck, and this part is made in the U.S.A. The way that these would open up is you just pull the clip, pull the pin out, and you can see each one of these will rotate out, and when you rotate those out, it will let you drop it into your underbed mount, and then once there, you just turn this back in to lock it, and then put your clip right through there just like that. This part is made in the U.S.A. That should do it for the review of the replacement side plates for Demco Hijacker Autoslide fifth wheel trailer hitches with the underbed mount..
Ratings & Reviews
Great return response
Great functional hitch. Poor powdercoating though (mostly flaking off) with quite a bit of rust after only a year.
Haven’t installed it yet but it looks like everything is there.
The Delivery was missing parts. I called customers service they replaced and delivery next days .
Moderate install. Follow the instructions Don't be a man and think you can do it without them you will waste time. Read the instructions in full 1st.
great hitch for my customers new truck to pull his new Durango 5th wheel!
Fast Delivery as well
Always RV
Mesa Az
Hitch sucks pain in the assembly to connect and disconnect.
Hitch looks great and functions great as well. Installation could’ve been smoother due to the installation instruction measurements being slightly off. Look at finding hole caps that are 3” instead of two and drilling the larger hole.
2019 Durango 5th wheel hitch install kit for my customers new truck
Always RV
Mesa AZ
Hitch works great. Had some issues using it when I first got it with putting the pin to lock down the handle but its worked much better lately. The hitch is heavy so I leave it in the back of the truck. Wish I could remove it so it doesn't get weathered.
Not so much the product, I'm sure it's great. But part number 60050 is apparently to similar the the part I received, part 6050. Paid extra for faster shipping on the original order. Because wrong parts were sent, we are returning it all. We had to locally source an entirely different hitch because we needed to install on a new truck that day. By locally sourcing, I mean drive 2 1/2 hours one way to get an above bed hitch and mounting system. Now I have a bunch of holes drilled in the bed of my truck that I didn't want and the customer service was horrible.
After a year, I still like my Demco autoslide. It works great. I have pulled my trailer quite a few times and have had no issues at all. I know quite a few people that pull 5th wheels and one actually went out and purchased a autoslide after watching mine work.
This rail system is certainly robust and I’m not concerned about it carrying the load of the fifth wheel at all. It is a quality product and seems to be made well. I installed this myself and it should be a relatively easy install; however, it was a huge pain. The rails install under the bed of my 2020 F-250 shortbed at the exact location where the truck frame has a bend in it. For this reason, the locking pins from the auto slide hitch above the bed couldn’t reach the under bed rail receiver holes (there was too much space since the frame rails slid down the bend in the frame). I couldn’t have installed this system by myself. With the help of a buddy, we were able to adjust the above bed hitch locking pins while one person was under the truck holding up the frame rails so they were snug with the bottom of the bed. This allowed the pins to properly drop into the frame rail receiver holes and lock the rails up against the bottom of the bed. In hindsight I could have held the rails in position by attaching them to the frame brackets first but that’s not how the instructions were laid out. This was my first fifth wheel hitch install so I guess I learned something to make my next install easier.
Have this installed in my 18 F350 SRW and it works ok. Sometimes the latches bind when removing the hitch because it shifts slightly when towing.
Installation was a pain. I had to remove all of the bolts holding the bed on, then raise the bed about 3" to get the rails in. Also, the rails sit directly up against the bottom of the bed so there's no way to install the hole covers when you have the hitch removed.
My truck did not come with the puck system and I use my truck to haul stuff other than my 5th wheel. The underbed rails work great because my 5th wheel hitch drops right in and leaves the bed empty when I take it out. I dont have to worry about lifting things around in bed rails and it looks clean when the bed is empty.
Easy in stall, Had my bed liner sprayed in and was afraid of scraping it taking out the hitch. Have had no problems so far even though I do it on my own. Its heavy but light enough for me to move to the back of the bed and take out with a floor hoist.
Kit was easy to install once the bed was loosened up and is holding up very well. The reason I did not give 5 stars were the included star bolt adapters were a softer steel and would skip and pop out. Ended up getting a separate hardened steel socket to complete the job.
Good kit. All the parts were sturdy and well made. Took my truck in to a local installer and he completed the installation in about 1/2 of a day. You should be aware that the installation involves unbolting the truck bed from the frame and that makes DIY a major undertaking. Unless you have the tools, equipment and skills you should plan on using a professional installer. With this kit I can remove my hitch and the truck bed is open and uncluttered for every day use. Only evidence of the hitch are the four flush plastic caps on the bed.
Instructions left alittle to interpretation when it came to hitch height in the bed of the truck. For a f350 super duty it is the medium set up. Save you some time and effort. Other then that it looks great and will be testing it out this weekend.
This hitch has been used daily since i purchased it. I deliver fifth wheel travel trailers all over the country. This hitch has worked flawlessly from day one. This hitch is one of the only products that I've ever bought that is exactly what it was described to be. Im not one to do reviews, so the fact that im doing this one , in itself, says a lot about the quality of your product. The design and looks are much better than any other hitch ive seen. It just looks better in the truck bed than others do.
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