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  1. Fifth Wheel Hitch
  2. Demco
  3. Sliding Fifth Wheel
  4. Above Bed Rails
  5. 18000 lbs GTW
  6. Premium - Single-Hook Jaw
Demco Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs

Demco Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs

Item # DM8550034
Our Price: $1,725.00
You Save: $1,509.46
Fifth Wheel Hitch
Shipping Weight: 277 lbs
In Stock
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This hitch slides automatically as you drive to give you 14" of additional clearance for tight turns. A wraparound jaw provides a smooth ride and a locking bar offers added security. Pivoting head allows easy hook up and helps to limit chucking. 1-636-245-0075 to order Demco fifth wheel hitch part number DM8550034 or order online at Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs. Fifth Wheel Hitch reviews from real customers.
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Demco Fifth Wheel Hitch - DM8550034

  • Sliding Fifth Wheel
  • Demco
  • Above Bed Rails
  • 18000 lbs GTW
  • Premium - Single-Hook Jaw
  • Double Pivot
  • 4500 lbs Vertical Load
  • 14 Inch Fore/Aft Travel
  • 16-1/2 - 19-1/4 Inch Tall

This hitch slides automatically as you drive to give you 14" of additional clearance for tight turns. A wraparound jaw provides a smooth ride and a locking bar offers added security. Pivoting head allows easy hook up and helps to limit chucking.


  • 5th-Wheel hitch mounts in your short-bed truck bed so you can tow your 5th-wheel trailer
  • Automatic slider provides clearance required for your short-bed pickup to turn safely at slow speeds
    • No more getting into and out of the truck to operate a manual slider
    • Head slides toward the tailgate when you turn and back toward the cab when you straighten out
    • Rack-and-pinion gears create smooth, controlled, automatic motion
  • Rotating hitch head turns up to 90 degrees with your trailer
    • Rotation creates the force that propels the automatic slider
    • Built-in brackets stabilize your pin box so the king pin won't rotate in the hitch - no need for a separate capture plate for standard, non-cushioned pin boxes
  • Wraparound, single-piece jaw provides a secure connection
    • 360-Degree jaw-to-king-pin contact
    • Less rattle and more security than slide-bar jaws
  • 3/4" Thick, solid steel locking bar reinforces the connection of your coupled trailer
    • Automatically locks into place when the jaw closes
  • Double-pivot hitch head eases hookup and helps to limit chucking
    • Pivots front to back and side to side
  • 3 Height settings to fit your application
  • Cushioning polyurethane dampeners help reduce noise and absorb road shock
  • Spring-loaded handle with comfort grip allows for simple coupling
    • Tethered safety pin lets you secure the handle in the open or the closed position
  • Sturdy steel construction with rust-resistant black powder coat finish
  • Simple installation with base rails and installation kit (sold separately)
    • Compatible with B&W, Curt, Demco, Draw-Tite, Hidden Hitch, Husky, Reese, and Valley above-bed base rails
    • Cannot be used with rails that are a part of a gooseneck adapter plate - base rails must be securely bolted to your truck
  • Made in the USA


  • Designed for use on 6-1/2' truck beds
  • Fits standard pin boxes 12" - 14" wide
    • Locking plates (sold separately) are required for use with the following cushioned pin boxes: Glide Ride, Mor Ryde, Trailair Tri Glide, Trailair Flexair, Rota Flex, and 5th Airborne
  • Gross towing weight: 18,000 lbs
  • Vertical load limit: 4,500 lbs
  • Travel: 14" front to back
  • Hitch height settings: 16-1/2", 17-3/4", and 19-1/4"
  • 5-Year limited warranty

Note: 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.

Automatic Slider Makes Cornering Easy

Most often used on trucks with 6-1/2' beds, a slider helps to eliminate clearance problems during slow-speed turns. When you are towing a fifth-wheel trailer, your hitch must be situated on the cab side of your truck's rear axle. However, at slow speeds you can use a slider to slide the fifth-wheel hitch (and the trailer) toward your truck's tailgate and past the rear axle, creating enough space between the cab of your truck and the trailer to permit less-restricted turning.

Normally, you'd have to get out of your truck and pull a lever to release the slider before every turn, but what if there was an automatic system? Imagine having 14" of extra clearance while towing your fifth-wheel trailer. Now imagine having this without needing get out of the truck to move your slider. The Demco Autoslide makes this fantasy a reality. The Autoslide automatically glides back smoothly when you make a sharp turn so you can maneuver effortlessly around tight corners within campsites and parking lots.

Demco Hijacker Autoslide

The base of the Autoslide has a built-in rack-and-pinion gear system that operates automatically. As your truck turns, the pinion in the base also turns. This activates the rack gear, which causes the rotational force of the truck to be converted into the linear sliding action of the hitch. So, when your truck makes a sharp, slow-speed turn, the gears inside the Autoslide force the hitch head to slide down toward your truck's tailgate in a smooth, controlled motion. This way, any time that your truck turns more than 10 to 15 degrees, the Autoslide will ensure that there is enough clearance for your trailer to complete the turn as well, and it will do so without any jerking or binding.

In order for the rack-and-pinion assembly to function as designed, the pin box must be stabilized on the hitch head. Normally in a fifth-wheel hitch, the king pin moves inside of the hitch head so that the trailer can turn. With the Autoslide, the king pin remains fixed inside of the jaws of the hitch and it is the hitch head itself that turns. This is thanks to the capture brackets on the sides of the head that brace the pin box from both sides to hold it in place on top of the hitch head. This is done to ensure that there is enough resistance within the hitch when your truck turns to properly activate the rack-and-pinion gear mechanism.

Demco Hijacker Autoslide capture bracket

To stabilize your pin box on the hitch head, simply push the capture brackets up against your pin box once the trailer is coupled and tighten the outer bolts and the inner jam nuts. The Autoslide head and brackets will fit standard pin boxes that are between 12" and 14" wide. If you have a Glide Ride, Mor Ryde, Trailair Tri Glide, or 5th Airborne pin box, you must install a special locking plate (sold separately) as well.

When you straighten your rig out again and your trailer moves back in line, the hitch head will rotate back to center and slide back toward the cab into the straight towing position.

Secure Wraparound Jaw with Locking Bar

Demco Hijacker Autoslide wraparound jaw and locking bar

The single-piece, strong wraparound jaw completely surrounds your trailer's king pin for 360 degrees of contact. This wraparound jaw provides a more secure connection than standard 2-piece jaws that close in on the king pin from the sides. The increased jaw-to-king-pin contact on the Autoslide offers tighter tolerances around the king pin, which minimizes both rattle and chucking, for a smooth, quiet ride.

A 3/4" solid steel locking bar spans the area in front of the jaw. This bar provides an added barrier of protection against accidental disconnection so you can have peace of mind that your trailer is secure. The locking bar is attached to the jaw and to the spring-loaded handle. The bar automatically locks when the jaw closes around your king pin.

Double-Pivot, Cushioned Hitch Head

The double pivoting, cushioned head improves your towing experience dramatically by helping to reduce jarring and unwanted noise. Built-in pins allow the hitch head to pivot back and forth and side to side. And hooking up is easy because the hitch head will automatically pivot to the proper angle when it comes into contact with your pin box.

Three polyurethane dampeners help to cushion the movement from the pivoting head and to reduce towing noise. Two of these dampeners are built into the head assembly to cushion the head's side-to-side pivoting. The third dampener cushions the back-and-forth motion and must be installed in the hitch prior to use. Installation of this third dampener is easy - simply press the dampener up into the pre-drilled hole underneath the hitch head.

Easy Installation

The Autoslide hitch is designed to attach to universal above-bed base rails (sold separately). The hitch will fit most industry-standard rails, including those from B&W, Curt, Demco, Draw-Tite, Hidden Hitch, Husky, Reese, and Valley. The hitch comes pre-assembled for an easy installation. All you have to do is bolt on the side plates and attach the head to the hitch base.

The side plates have 2 functions. They contain the feet that fit into your above-bed rails, and they allow you to raise or lower the hitch head to better match your pin box height. After you choose your desired height setting, simply bolt the side plates to the hitch base with the included hardware. Then attach the base to the rails with the included safety pins.

Clearance Formula for Short Bed Trucks

Use the formula below to ensure there will be enough space between your truck cab and trailer when executing a 90-degree turn.

(A+B) - C = Clearance

A = Distance from the center of fifth-wheel hitch jaw to truck cab

B = Length of Travel (14")

C = Width of trailer divided by 2 (to get half)

For example: If the distance from the center of the hitch to the cab is 36", 36" + 22" = 58". If your fifth-wheel trailer is 102" wide, take half (51"), then plug in: 58" - 51" = 7" of clearance.

Note: At least 4 inches of clearance is recommended to safely execute a 90-degree turn.

6077 Demco High Jacker Head Assembly for Auto Slide 5th Wheel Trailer Hitch - 18,000 lbs

6003 Demco High Jacker Adapter Plates for Auto Slide 5th Wheel Trailer Hitch

Installation Details DM8550034 Installation instructionsAlternate Instructions DM8550034 Installation instructions

Customer Satisfaction Score:

Customer Reviews

Demco Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs - DM8550034

Average Customer Rating:  4.7 out of 5 stars   (541 Customer Reviews)

This hitch slides automatically as you drive to give you 14" of additional clearance for tight turns. A wraparound jaw provides a smooth ride and a locking bar offers added security. Pivoting head allows easy hook up and helps to limit chucking.


Demco auto slide hitch works very well with my crew cab short bed Ram. Fits under my tonneau cover nicely. Trouble free thus far. Had to purchase a Demco plate for the camper to make the Rhino box hitch work. etrailer personnel were great in helping ensure I had the right products and kept me well informed of shipping dates.

Still working great!
John - 07/17/2023


wow what a great hitch . Got the no drill bed rails and the bolted rite up to my B&W gooseneck hitch . Ashley E did a great job answering all my questions . Only took a few days to get here too. Took me about 2 hours to install everything and if you have a short bed truck this is the only way to go .


I've been a tool and die maker for 42 years and can see the outstanding craftsmanship in this 5th wheel. It's built like a tank. Best of all it's made in AMERICA.


My wife and I are full-time RVers, and have used this slider hitch from the get-go while traveling around seeing the country over the past year. We are happy with our purchase, which has proven to be both easy to hook up, adjust, and functions well, as advertised.

The only matter I think you may want to address are the thick plastic removable maintenance access covers which tend to bow, and the areas around the attachment holes have melted, in the hot weather. Perhaps instead using a light metal for the covers would be better solution.

We are very happy overall with this hitch, and plan to keep it . Thank you.


I have owned this unit for over a year now. Here are the pro's and cons that I have experienced.
Pro- I have pulled with this hitch in some really tight spaces in forward and reverse and still have the rear window in tact.
Con- Heavy, really heavy.
Pro- heavy duty,smooth riding, and double jaw lock makes a great connection.
Con- manufacturer recommends 1/8 of separation between the slides on the top of hitch. When backing upon 40' wheeler in some tight spaces it is hard to align without opening the slides a bit more. This is not he issue. Remembering to tighten them in the rush of leaving is the hard part.
Pro- once you are attached to your truck there is nothing more you need to worry about until you disconnect.
Con- If you are a weekender like me and use your truck for work the rest of the week, you will need at least one person to help lift in or out pre or post travel. Works pretty well with gantry crane.


Installed in my 2014 Silverado. This looks to be a very heavy-duty hitch that doesn't require a capture plate.

This hitch has worked well for me. It is now used in a 2018 GMC Sierra 2500. It is just tall enough that I can see it in my rearview mirror to make it easy to get lined up with the kingpin
Mike G - 09/15/2019


Tows great. I’m a first time fifth wheel owner. This made it easy. Be careful because this hitch is capable of angle that your trailer axles aren’t especially on a hard surface like asphalt or concrete. Over all very pleased. Be prepared to hoist this hitch in and out of your truck if you plan on removing it often. Probably weights closed to 400-500 lbs.


Excellent choice for a short bed Super Duty . Have towed several thousand miles with no issues. This is a heavy hitch , but that is what you get with a heavy duty Demco hitch . Plenty of room between trailer and truck when doing tight turns.


I love this hitch. Never having used an automatic slider and moving from a long bed to a short bed truck it took me a few attempts to get accustomed to backing up.
I would recommend this slider over any other brand. No capture plate needed either.


Unit is heavy and well built. Install was easy, just bolt on side plates on, drop the base on the adapter plate and pin it, put head assembly on and pin that, that's all there is to it. Looking forward to many years of towing with this unit.


This hitch is great! It relieves you from any worries of making a mistake when turning or backing a 5th wheel trailer on sharp corners. You will hear a small metalic noise that is a result of the rotating head having clearances enough to operate properly and I had a similar sound with my bumper pull trailer.


We looked at several hitches and we decided on the Demco auto slider. The key was it’s an AUTO slider. I can say after a year I’m glad we bought one that is this tough as well. So many of the roads are under construction and this hitch is a beast. In my first couple of long-distance pulls, we ran into some very bad roads in need of repair, and even though we felt like we came out of our seats the hitch was steady and performed awesomely. That’s what you want!!!


Demco fifth wheel hitch purchase and installation pictures.


Excellent product easy to install fit perfect and easy to hitch up well built exceeded my expectations.


Haven't used yet but appears well built. Purchased with bed rails and capture plates. Packaging from etrailer was on a pallet and none of the 4 boxes had a blemish. Wish other companies would have this attention to detail.

OK. Its been a year since I purchased my Demco sliding 5th wheel hitch. Theres good and bad. The good is that I dont have to worry about breaking out the rear window of my truck when making a tight turn. The hitch is designed well with this respect. I can even turn on my truck bed camera and watch it in motion, which is pretty cool. The bad is that it is a little hard to hitch up. Since this hitch has capture plates, which makes the head of the hitch spin with the trailer hitch so it knows to slide towards back of truck, you have to have a pretty straight lineup between truck and trailer. If it wasnt for all of the cameras I have on my truck Id probably be a little frustrated. But as is, I do like the hitch. Just make sure you align truck with trailer exactly when hitching AND unhitching.
Hank - 03/03/2022


Quality is good. Installation was tricky without a lift. Some of the bed rail bolt holes (passenger side rear rail) where nearly impossible for a large hand to fit the nut on the bolt. Actually had to have my wife crawl under the truck and slide her hand in the brace to install the nut. Getting a decent size torque wrench into the space was also imposible. The front drivers side rail bracket required removing several vehicle lines and wires which was easy however the bracket covered the holes where the wires attached to the frame, so now they are hanging zip tied together. Hitch/ fifth wheel looks good quality but very heavy. Installed a 400 .lb capacity electric winch from harbor freight to lift the hitch. Firestone airbag helper springs was easy install but getting the exact straight cut on the hose end that hooks to the fill port was challenging to keep it from leaking
Videos were very helpful

Works Flawlessly
Glenn - 07/11/2021


The Autoslide installation was easy (with help of another person). It was heavier than I expected, but manageable for two people. The included instructions were "spot on" and made the install easy for me. It also helped to look at the videos posted on their web site.
Once we installed the Autoslide in my 2021 RAM 2500 truck, the trip home with our new 5th wheel Toy Hauler went without any problems. I would recommend this Autoslide in ANY Short bed truck pulling a 5th wheel camper. After researching other available 5th Wheel hitches, I think this one is best to use. Easy to install, competitive price, and a good quality product.


The hitch works as expected. It is very heavy duty and has held up well. I have pulled a 13,000 pound trailer in excess of 10,000 miles with no problems. I purchased this one because it does not require any adapters for the pin box/capture plate. This means I can pull any standard 5th wheel. The other brands that I found all required a special plate and was specific to the trailer (Not one size fits all). The only downside is that the hitch is very heavy. But that is to be expected for a very heavy duty hitch.

The hitch is indeed heavy. If you have a chain hoist available, using a lifting bracket like part # DM6100
Demco 5th Wheel Lifting Bracket
see link would certainly make installing and removing the hitch much easier.
-- Etrailer Expert Mike L - 03/06/2019


This hitch combined with the puck system makes it easy to hitch up my 5th wheel and tow it worry free. When done towing I simply remove the hitch and have the whole bed available to use. The auto slide works effortlessly to make maneuvering the trailer easy. Very excellent product at a fair price.

Now that Ive had time to use this, it is awesome! never worry about having to adjust the hitch to make sharp corners. Worry free RVing at its best! Love it!
Gene T - 06/21/2020


Very well built and engineered. Great customer Sevice from etrailer and demco. If you plan to remove the fifth wheel from the truck demco makes a lifting pin. A gantry Crain is helpful too. This thing is heavy duty, good for a lifetime! I also purchased the rail adapter. Thumbs up for that also. Be aware that this setup is tall. My 2018 fwd Ram has a tall bed height combined with the fifth wheel height could make a lower trailer pin height a problem with tailgate clearance and trailer angle. I’m very happy with this setup.

Its been a year and I would not hesitate to purchase again.
Mark F - 01/20/2020


The demco adapter and fifth wheel have worked flawlessly on my GMC. I have never had to worry about my clearance with the auto slide fifth wheel and with a standard bed on my truck that is great. The height clearance is perfect on the bed with the various adjustments allowed on the fifth wheel. The installation was easy and the fifth wheel can be easily removed with an engine hoist. It takes about 10 minutes. I really like this product and would highly recommend it...


Easy installation.


This slider works great never have to even think about it being back there it does it's job with out a care from me worth evert penny it cost.


Got my hitch installed today. Looks great but won't use it until next month. I'm really looking forward to towing with the auto slide hitch.

Still working great after a year. Its a heavy duty hitch built for years of trouble free service.
Jerry S - 10/22/2021

Show More Reviews

See what our Experts say about this Demco Fifth Wheel Hitch

  • Can Sliding 5th Wheel Trailer Hitch be Slid Back All the Time for Regular Towing
    When using a slider 5th wheel trailer hitch you should only tow with it in the forward most position and not when slid back. The hitch should only be slid back when making tight maneuvers that require more clearance. If the trailer where slid back all the time it could cause the front of the truck to lift up a little. This will cause steering and braking problems as well as visibility issues. Also, the truck weight capacity behind the rear axle is less than with the hitch in the proper...
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  • Will Demco HiJacker 5th Wheel Hitch for Above Bed Rails Fit in Place of Pro Series Slider Hitch
    Yes, both your Pro Series hitch and the Demco HiJacker # DM8550034 will fit in industry standard above the bed rails that you have. The HiJacker is an auto-sliding hitch and it travels 14 inches which is more than the Pro Series travels. So not only will you not have to get out of the truck to activate the slide feature but you will also get a little more turning clearance! I have linked a review video of the HiJacker for you.
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  • Need More Turning Clearance when Towing 5th Wheel Trailer with 1999 Dodge Ram 2500 Short Bed
    The Atwood AB72 pin box is a telescoping box but there is no Sidewinder pin box that will fit it. So to get additional clearance you will need to use a hitch that has more travel than the Reese hitch you have now. I recommend the Demco HiJacker, # DM8550034, because it offers 14 inches of travel, more than any Reese slider, and it slides automatically so you won't have to get in and out of the truck to activate the sliding feature. This hitch fits in industry standard above the bed rails....
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  • Does the Demco Hijacker Auto-Slide Hitch Slide Back When Backing Up
    Yes, the auto-slide feature of the Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550034 that you referenced will function in forward and in reverse. What slides the hitch back is the angle of the head in relation to the base of the hitch. When turning the head it engages the gears on that side of the hitch which then slides it back. Check out the video I attached for more info.
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  • Hitch Height Dimension of Demco DM8550034 Hijacker Auto Slide 5th Wheel Hitch
    I can help you understand why there are differentiating measurements on the Demco Hijacker # DM8550034. Both specifications are correct per the manufacture's instructions; the unit has adjustments from 15.25, 16.5, and 18.0. See attached image. According to the video, Jeff states the measurements from the bottom of the truck bed, so his measurements take in account the height of the above the bed rails this unit will need to be installed on. In the video that the lowest hitch height...
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    Image 1 for
  • Will I Have Enough Clearance to Tow a Fifth Wheel Trailer with 2015 Ram 2500 with Sleeper Shell
    Unfortunately, there's no way you're going to get enough turning clearance with only 36 inches of bed space with either a sliding hitch or Sidewinder. You won't even be able to install the fifth wheel hitch with the sleeper shell installed. The hitch would be too far back in the truck bed. In order to determine the amount of clearance you have you're going to need to do a little measuring and a little math. Once installed, a fifth wheel hitch can sit either directly over or about...
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  • Does the Demco HiJacker Autosliding 5th Wheel Trailer Hitch Auto Slide when Backing Up
    Yes, the Demco HiJacker # DM8550034 will auto slide going backwards as well as forwards. The way that it is designed as soon as the head starts to turn the hitch will auto slide and it does not matter if you are towing forward or backing up.
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  • Recommended Spacing Between Tool Box & 5th Wheel Hitch
    There is no absolute rule for spacing between the forward side of a 5th wheel hitch and a tool box mounted between it and the cab, but I would say 6 inches would be an appropriate minimum in most instances. We do have recommended clearance distances between the various points of the trailer and truck that you can see in the linked diagram. You want to ensure the front loft of the trailer can clear the top of the tool box.
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  • Why Do Trucks Have Higher Towing Capacity for Fifth Wheel Pin Weight than Truck Bed Payload
    So the difference between payload capacity and pin weight capacity is that the fifth wheel hitch setups are bolted directly to the truck's frame which is where their capacity is related to and payload is the truck bed which is made from a much less strong material. Without knowing what year/make/model your truck is it's hard to say what the capacity is but if you check with Ram or the owners manual the capacity will be listed.
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  • Is a Locking Plate Needed with Demco Hijacker Autoslide Fifth Wheel Hitch
    For standard pin boxes you do not need to use a locking plate with the Demco Hijacker hitch # DM8550034 but if you use the following cushioned pin boxes: Glide Ride, Mor Ryde, Trailair Tri Glide, Trailair Flexair, Rota Flex, and 5th Airborne you would need to use a locking plate. I attached the portion of the instructions that covers how tight the capture plates should be and you are correct you need it to be 1/8 inch wider than the pin box width. This is tight enough to allow the head...
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  • Slider Function of PullRite SuperGlide and Demco Hijacker 5th Wheel Hitch
    We do not currently carry PullRite products but it looks like the automatic slider mechanism on the SuperGlide hitch you mentioned will operate whether going forward or backwards in the truck. Between these 2 models though I do recommend the Demco Hijacker # DM8550034. This is because in addition to having a higher towing capacity of 18,000 pounds (compared to 16,000 on the PullRite) the Hijacker also features a superior wraparound single-piece jaw coupled with a 3/4 inch thick steel...
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  • Comparing Demco Hijacker and PullRite SuperGlide 5th Wheel Hitch for 2020 Ram 2500
    Both the Demco Hijacker 5th Wheel Hitch # DM8550034 and PullRite SuperGlide Hitch are excellent autoslide units that let you stay inside the comfort of your cab when making tight maneuvers on the road, however I do think the Demco Hijacker offers a couple of upgrades over the SuperGlide that make it my recommendation. For starters, while both hitches feature a single-jaw system, the Hijacker also includes an additional 3/4" thick solid steel locking bar to reinforce this connection and...
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  • Do Demco Hijacker Autoslide Hitches Fit Most Standard Pin Boxes
    The Demco Hijacker autoslide hitches like the # DM8550034 basically fit all pin boxes with a few exceptions that require capture plate type adapters. These are typically cushioned pin boxes which from looking at your picture it looks like you have a standard type of pin box and would not need any adapters. Several of the cushioned pin boxes end up not needing adapters as well.
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    Image 1 for Image 2 for
  • Formula for Determining Turning Clearance with 5th Wheel Trailer
    It sounds like you saw something on our site and either it didn't give clear information or you're combining similar information from two different topics. Maybe not but I guess it doesn't matter I think I can clear it up for you. The B in the turning clearance formula (A + B) - C = Clearance is the distance of travel from a sliding fifth wheel hitch or the distance a Sidewinder (a rotating pin box) moves the pivot point of a fifth wheel. The 14 inches in the example you saw is the distance...
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  • Does Demco Hijacker Auto Slide Hitch Fit Below Bed Rails for Tonneau Cover
    The Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550034 that you referenced fits beneath the tops of the bed rails. If you check out the picture I attached you can see that the head of it does not stick up higher than the tops of the side rails.
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  • Can Demco Hijacker Autoslide 5th Wheel be Used in Long Bed Truck
    It's okay to use a slider hitch in a long bed truck and still have the hitch slide back around tight turns. While the additional turning clearance is not required it won't hurt anything. So you can use the Demco Hijacker part # DM8550034 you referenced in the bed of your new truck and wouldn't have to try to bypass the sliding feature. Which there isn't a recommended way to do that but if you removed the side plates that hold the threaded brackets that press against the pin box the head...
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  • Does Demco Hijacker Autoslide Fifth Wheel Hitch Require Grease Maintenance
    I attached a picture that I took from the install instructions for the Demco Hijacker part # DM8550034 that you referenced that shows all of the components of it that need to be lubricated. From the handle, to the head to the autosliding components.
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  • Lubricating Demco Hijacker Autoslide 5th Wheel Hitch
    The Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550034 comes pre-greased from the factory but Demco does recommend keeping all moving parts well greased and lubricated over time as part of regular maintenance. They recommend simply applying WD40 or similar lubricant into the locking bar tube, opening and closing the locking bar a few times for even application. The jaw pins can be removed and greased by unhooking the jaw spring and snap rings. Routinely clean and inspect the...
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  • How To Determine Height Setting For The Highjacker Autoslide Be Set At For A 2019 Ram 2500
    The adjustable height feature of the Highjacker # DM8550034 is one of it's greatest assets for sure. To get started you'll need to take some measurements. Measure from the ground to the king pin on your pin box and then measure from the ground to bed of your 2019 Ram 2500. You will need a minimum of 5-6" of bed rail to trailer clearance per the attached diagram. Next choose which height setting (15-1/4", 16-1/2", and 18") is the best for your application. If you don't have enough...
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  • 5th wheel hitch concern
    The EquaFlex is a style of suspension hanger but I am assuming you have a Trailair Rota-Flex or Flex Air based on what you mentioned. The pivoting head of the pin box should not rotate like you mentioned but to be sure I am understanding what you have and what you are experiencing could you send me some pictures of setup? Preferably with it in the problematic position you mentioned.
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  • Can the Demco Hijacker Autoslide 5th Wheel Hitch Auto Slide While Truck is Backing
    The Demco Hijacker Autoslide # DM8550034 works the same in reverse as it would if you were turning while moving forward. Once you make a 10 to 15 degree turn, the hitch will automatically unlock itself and the hitch head will slide rearward providing additional clearance between the front of your fifth wheel and the rear of the truck cab. If you click the provided link, you can see a product demonstration video.
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  • Uncoupling at an Angle with the Demco Hijacker Autoslide 5th Wheel Trailer Hitch
    Yes, trying to couple at an angle with the Demco Hijacker Autoslide # DM8550034 is actually not recommended. The head is fairly hard to move but you should be able to get it. It'll get easier with use. One method that might help is to lock the head release handle open so it's extended out and use that as leverage. A secondary option is to remove the head and loosen the pivot bolt that runs vertically. This is obviously a lot more intrusive but will work if you need it.
    view full answer...
  • Height of 18K Demco Hijacker Autoslide 5th Wheel Trailer Hitch
    The Demco Hijacker Autoslide 5th Wheel Hitch # DM8550034 referenced in your question has three possible hitch height settings, depending on what you are needing to tow your trailer level. It can be adjusted to 15-1/4 inches, 16-1/2 inches or 18 inches in height. This is a great 5th wheel hitch that features an automatic slider so you do not need to get in and out of your truck every time you need to make sharp turns. The premium wraparound, single-piece jaw will provide a secure connection...
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  • Demco Autoslide Maintenance On Bottom Slider Jaws
    When using a 5th wheel hitch like the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs # DM8550034, the slider jaws on the bottom don't need extra grease. I reached out to my contact at the manufacturer and he said there normally isn't a need to add grease to that part of the system, but some people choose to. If you do add grease, he recommends maintaining it so that there isn't extra build up due to that extra grease. It technically will...
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