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

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

Item # DM8550034
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Our Price: $1,599.00
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Fifth Wheel Hitch
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Shipping Weight: 277 lbs
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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. Call 800-298-1624 to order Demco fifth wheel hitch part number DM8550034 or order online at etrailer.com. Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Demco Hijacker 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
  • 18000 lbs GTW
  • Demco
  • Hitch Only
  • Double Pivot
  • Premium - Single-Hook Jaw
  • 4500 lbs Vertical Load
  • 15-1/4 - 18 Inch Tall
  • 14 Inch Fore/Aft Travel

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: 15-1/4", 16-1/2", and 18"
  • 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 Hijacker 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 Hijacker 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 Reviews

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

Average Customer Rating:  4.7 out of 5 stars   (350 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.

- DM8550034

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.

- DM8550034

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

- DM8550034

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

- DM8550034

Instructions could be more specific to vehicle. I also think videos of more fords without puck system would be good.

- DM8550034

I recently purchased the Demco autoslide 5th wheel hitch with the 21K rail adaptor wih tow prep package. I installed everything in less than two hours, I found it to be pretty simple to put together. The puck system fits like a glove to my truck. I planned on keeping the two parts together all the time, but it is a little difficult to unlock the puck system with the hitch still attached. My hitch width covers the safty pins that lock into my puck system. Not a big deal, I may find it's easier to take the hitch off then the adaptor. My wife and I don't have a trailer yet, but when she finds the one she wants we will be ready for the road!

- DM8550034

Easy installation.

- DM8550034

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.

- DM8550034

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.

- DM8550034

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.

- DM8550034

Arrived on time and worked exactly as described. Very heavy duty hitch. Installs and removes easily as long as you have a mechanical way to pick it up,. To heavy for one person to lift but i feel confident when pulling my camper down the road. No issues at all with the hitch. Stacey A. was very helpful through the ordering process. I would buy it again if needed.

- DM8550034

A little heavy but is solid and works g reat!

- DM8550034

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.

- DM8550034

Just got back from a 20 day road trip with our 5th wheel camper using the Autoslide hitch. It worked flawlessly! I have a short bed Dodge Ram and had to get into some areas that included tight turns. Although I was initially weary of how close the trailer was to the cab of my truck, it was always at a safe distance (and no manual unlock to slide!) Great product, would definitely recommend!

- DM8550034

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.

- DM8550034

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

- DM8550034

This hitch is awesome! I have been using it for a year now and never have to worry about hitting my truck cab. I have a smaller street to back my trailer off of and into my driveway with never a worry. 100% would.buy again.

- DM8550034

Really enjoy the Demco Hijacker autosli de.

- DM8550034

My Demco Sliding 5th wheel hitch has really been a great hitch. I have never used or towed a 5th wheel and this hitch makes towing a breeze! The service I received was exceptional!!! They came in to help me with a small glitch after hours. I would highly recommend etrailer.

- DM8550034

Demco fifth wheel hitch purchase and installation pictures.

- DM8550034

Hitch is good. I did have a problem aligning hitch in a hilly sandy soil, truck would shift in the sand causing a misalignment with the hitch, this caused it to bind and would not line up. Had to loosen guides for it to lock in, then re-adjust after pulling it straight out.

- DM8550034

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.

- DM8550034

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.

- DM8550034

I would not buy this hitch again because -- 1. It takes up to much space in the truck bed 2. It is over built thus weighs to much 3. It is very hard to hook up because the hitch swivels when unhooking, thus making the hooking up very difficult lining up on an angle. 4. With this hitch I cannot lock out the swivel feature. My old hitch I could lock it out I would buy from E Trailer again there sales people are great and delivered time was great. The hitch choice was my mistake not E Trailer's

This demco hitch part DM8550034 is a completely gear driven hitch. Whichever angle you uncouple at is the same position the head will stay in until it is coupled back up. It is a good idea to couple up at as straight of an angle as possible. If there is ever a situation where you have to uncouple at an angle you can physically turn the head back to a straight position by taking the head off the hitch and putting a straight bar through the assembly for some leverage. The head should not be swiveling during coupling unless the main bolt is loose. The bolt that holds the gear assembly together has to be torqued to the specific foot lbs in the installation instructions or the head may swivel and cause issues during coupling. That bolt is part 05366 in the instructions.
-- Etrailer Expert Heather A - 08/14/2018

- DM8550034

From a ride perspective, this is an excellent hitch for a shortbox. I never worry about hitting my cab and have been all over the country with my 5er. Maintenance is relatively simple and makes traveling easy. Some cons are, of course, the weight and size of this beast. But, it works for me and I like the comfort of knowing I don't ever have to hop out in traffic to slide the hitch to make a turn. Another potential con is the height. In my 16 Nissan Titan XD Pro4x Cummins, I have to have this on the lowest rail setting and it still is quite tall. I know that's mostly my truck's height issue, even stock, but still a drawback for this to me. Also, I had one of the alan bolts come undone in the handle that controls the kingpin claw (so now I keep a closer eye on all the bolts)...but Demco sent me a new one no questions. Even so, all concerns are minor in the grand scheme of things.

Show More Reviews

Ask the Experts about this Demco Fifth Wheel Hitch

  • Demco Hijacker Autoslide Compatible with 2020 Ram 2500 with Factory Prep Package Pucks
    For the 2020 Ram 2500 factory prep pucks you will use the standard rail hitch # DM8550034 and then the rail adapter for RAM Pucks # DM6099. This gives you the components for the factory 5th wheel prep package and is a great fit for the truck. They will love the Hijacker Autoslider hitch function and the rail adapter is extremely easy to install. I've attached a couple videos to assist.
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  • Best Sliding 5th Wheel Hitch For Clean Bed on 2020 Chevy Silverado 2500 With or Without Puck System
    These are really good questions and we can definitely set you up with the right 5th wheel hitch for your 2020 Chevy Silverado 2500 short (also called standard) bed, but to quickly answer your question about underbed brackets, there aren't any that are universal (as nice as that would be), they are only designed to be used with specific 5th wheel hitches. That said, you do have a number of different options, which I'll list for you and then make my recommendation. 5th Wheel Hitch for...
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  • Best Fifth Wheel Hitch Recommendation for 2019 Ram 2500 Short Bed
    Hey Jake, so I know there's a lot of hitch options for fifth wheel towing and in general you are correct that cost and quality go hand in hand but to answer your question about what you really need versus what's available let's start with the fact that since you have a short bed truck you do need a slider hitch to provide tight turning clearance so you don't hit the cab of your truck on the nose of your trailer. The Demco Hijacker part # DM8550034 that you referenced is a really great...
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  • How to Reduce Play and Rattle in Demco Recon Gooseneck-to-5th Wheel Trailer Hitch Adapter
    The only cause for the start/stop noise that I can think of is that the bolt shown in the linked photo has not been tightened down properly. This would explain the small amount of play. Please refer to the linked instructions for details. Demco makes two versions of their Recon Gooseneck-to-5th Wheel Trailer Hitch Adapter, parts # DM8550045 and # DM8550046. Part # DM8550045 is made to fit on a 2-5/16-inch gooseneck ball in a standard pickup and part # DM8550046 is made to fit on a recessed...
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  • Can 18K Demco Hijacker Be Adapted to Fit Puck System on 2020 Ford F-250
    Yes, fortunately, you do have a couple of options that will allow you to use your Demco Hijacker 18K Fifth Wheel # DM8550034 on your 2020 Ford F-250 with the OEM Prep Package. Your first option is to use the Demco 5th Wheel Rail Adapter # DM6175, which would drop into the four pucks on your bed and give you the same connection points as standard above bed rails so you can attach your hitch to it. Your second option is to replace the standard side plates currently on your Hijacker...
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  • Best 5th Wheel Hitch for a 2019 Chevy Silverado 2500HD LTZ Short Bed Towing a High Country 380TH
    The absolute best 5th wheel hitch to use on your 2019 Chevrolet Silverado 2500HD LTZ while pulling a Keystone Montana High Country 380TH is the Demco Hijacker Autoslide 5th Wheel Trailer Hitch part # DM8550034. The Hijacker is unique in that it has an auto sliding feature that will move the pivot point away from the cab during sharp turns to avoid interference. It also has a wraparound locking jaw which will provide excellent security of the king pin. In order to use the Hijacker with the...
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  • Autosliding 5th Wheel Hitch for a 2019 Ram 3500 with OEM Puck System
    The autosliding 5th wheel hitch we have for you to use on your 2019 Ram 3500 is the Demco Hijacker. This comes in both an 18K # DM8550034 and a 21K # DM8550035 weight rating and secures to your OEM puck system with the adapter rail kit # DM6099. The Hijacker is one of my favorite 5th wheel hitches because it not only has great cushioning for the head unit, but it also has a single-jaw system that is reinforced by a 3/4" steel bar to give you some peace of mind. All of this combined gives...
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  • Which is Better Auto Sliding Fifth Wheel Hitch for 2019 Ram 2500: Pullrite or Demco
    For your 2019 Ram 2500 short bed with the factory fifth wheel rail kit I recommend the Demco Hijacker autoslide part # DM8550034 for an 18k hitch or part # DM8550035 for a 21k hitch with the adapter plate part # DM6099 over the Pullrite hitches for a few reasons. The hitch head on the Hijacker has built-in brackets that hold it to your pin box since it needs to lock to the pin box as you make turns to allow the slider mechanism to automatically operate. The Pullrite option requires...
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  • I have 2018 ram 2500 had with factory 5th wheel prep package what 5th wheel do I need
    If your 2018 Ram 2500 has a short bed then I recommend the Demco Hijacker Autoslide simply because it gives you a very secure connection to the king pin, has some of the best quality cushioning for a smooth ride, and the autosliding feature means that you don't have to get in and out of your cab to use the sliding feature and avoid trailer-to-cab contact during sharp turns. The Hijacker is available in 18K # DM8550034 and 21K # DM8550035 versions and installs to the OEM puck system with...
    view full answer...
  • Autosliding 5th Wheel Hitch for a 2020 Chevy 1 Ton Pickup
    There actually are autosliders that are compatible with a 2020 Chevy Silverado 1 Ton! We have the Demco Hijacker Autoslider which comes in 18K # DM8550034 and 21K # DM8550035 versions depending on what size 5th wheel trailer you're needing to tow. The Hijacker offers a single-piece wraparound jaw that provides 360 degrees of contact with your king pin and then Demco includes a 3/4" thick steel locking bar that reinforces the connection for extra security and peace of mind. It includes...
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  • How to Install Demco Hijacker Autoslide in 2021 Ram 3500 with OEM Rail Kit
    To fit a Demco Hijacker Hijacker in the OEM rail kit of your 2021 Ram 3500 you'd need to use the above bed version part # DM8550034 with the rail kit adapter part # DM6099 which fits into the OEM rail kit of your truck. If you have a hitch already you'd just need the side bracket kit part # DM6003.
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  • What is Weight Difference Between 21k and 18k Demco Hijacker Auto Slide
    The gears of the 21k Demco Hijacker # DM8550035 are a bit heavier duty than the 18k capacity version # DM8550034 to allow it to have a higher capacity. The lighter duty hitch weighs 276 lbs and the heavier duty version weighs 308 lbs. To install this in the rail kit of a 2020 Chevy Silverado 3500 with OEM rail kit you will need the # DM6333.
    view full answer...
  • Parts Needed To Install Demco Hijacker Autoslide With Underbed Rails On 2017 Silverado 2500 Diesel
    I definitely understand how the above bed rails can get in the way when your Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550034 is removed. There is a way to convert your Hijacker # DM8550034 to underbed rails but you will need to install the Underbed Rail and Installation Kit for Demco Hijacker # DM8551010 and remove your current above bed rail system. You can then use Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitches # DM6004 to allow...
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  • Does Demco Hijacker Autoslide Fit Demco Rail Adapter For 2021 GMC Sierra 3500 Puck System
    It sounds like you are asking if the Demco adapter fits the puck system of your 2021 GMC Sierra 3500 and if the adapter will allow you to mount a Demco Hijacker Autoslide 5th wheel hitch, and I'm happy to say that the answer to both of those questions is yes. The adapter will fit directly in the puck system, and has the correct dimensions to mount either the 18,000 lb or 21,000 lb capacity Hijacker Autoslide. So you can use the adapter and Autoslide: - Demco 5th Wheel Rail Adapter...
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  • Weight of Demco Autoslide 5th Wheel Hitch for 2018 Ram 2500 With Factory Prep Package
    The Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550034 is big and weighs in at approximately 275 lbs. It will fit your 2018 Ram 2500 with the factory puck system but does require the Demco 5th Wheel Rail Adapter for Ram OEM 5th Wheel Towing Prep Package # DM6099. The adapter is about 90 lbs, putting the total weight to be in the 375 lb range, though the trade-off is that you get one of the best 5th wheel hitches in the industry, not to mention the one that is the most convenient....
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  • How can I Adapt my Demco Autoslide Fifth wheel to my Nissan Titan XD with the Prep Package?
    We have exactly what you need! You will use the Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitches - Above Bed Mount part # DM6003 to connect to your autoslide then connect it to the Demco 5th Wheel Rail Adapter for Nissan Titan XD OEM 5th Wheel Towing Prep Package - 21,000 lbs part # DM6200. This combined with your autoslide will give you a great system and the auto slide will help out tremendously when doing those slow maneuvers. If you're not already...
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  • Comparing Demco Hijacker and Pullrite SuperGlide 5th Wheel Hitch for 2019 Ram 2500
    Both the Demco Hijacker # DM8550034 and PullRite SuperGlide are excellent auto-slide 5th wheel hitches that let you stay inside the comfort of your cab when making sharp turns, however I do recommend the Hijacker for a couple of reasons. Both models do offer a robust single-jaw system for a secure connection to the trailer's king pin, but the Hijacker also includes an additional 3/4" thick solid steel locking bar to reinforce this connection. This not only provides incredible security...
    view full answer...
  • Which Demco Hijacker AutoSlide Fits Above Bed Mounted Fifth Wheel Rails
    We have above-bed rail compatible Demco Hijacker Auto Slide fifth wheel hitches like the # DM8550034 which has an 18k capacity and the # DM8550035 which has a 21k capacity. Once you lock out your Sidewinder you'd be able to use either hitch and it will automatically slide back.
    view full answer...
  • Will Demco Hijacker Autoslider Fit 2019 Ram 3500 Mega Cab with OEM Puck System
    Yes! You can use either the 18K # DM8550034 or the 21K # DM8550035 Demco Hijacker Autoslider with the puck system on your 2019 Ram 3500 Mega Cab with the Adapter Rail Kit # DM6099. This adapter rail kit fits directly into the puck system of your pickup and provides the standard base rail connections that the Hijacker requires to properly install. I am attaching a photo a customer sent in of this combo installed on their 2018 Ram 2500 short bed that you can reference.
    view full answer...
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  • Best Lube Plate for Demco Hijacker Autoslide Hitch
    The Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550034 can only use a lube plate that is a maximum of 3/16 inches thick so you can use the # RP83004 that is 12 inches diameter and 1/8 inch thick or the Curt 10 Inch # 16721 that is 3/16 inch thick. I recommend using the Reese # RP83004 as it is wider for more pin box contact and yet thinner to allow the capture plates to more easily engage. Standard pin boxes measure between 12 and 14 inches wide. The lube plate will...
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  • How Much Does Demco Hijacker Autoslide 5th Wheel Trailer Hitch Weigh DM8550034
    Another Expert was asked this very question and he found that the total weight of the 18k Demco Hijacker Autoslide # DM8550034 is listed at 265 pounds. You can disassemble the hitch when taking the hitch out of your truck. The head weighs approximately 40 pounds leaving about 225 pounds for the base.
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  • Recommended Sliding 5th Wheel Hitch For 2019 Ram 3500 Dually Mega Cab With Factory Pucks
    I recommend the Demco Hijacker Autoslide 5th Wheel Trailer Hitch part # DM8550034 with the in bed adapter part # DM6099 for the 2019 Ram 3500 with factory pucks because of the convenient auto slide feature. The Hijacker is one of the most convenienet sliding fifth wheel hitches on the market because you don't have to get out of your truck to adjust the slider when you make turns which can become inconvenient especially in city traffic. It also features a 360 degree contact with the king...
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  • Fifth Wheel Hitch and Suspension Enhancement Recommendation for 2019 Nissan Titan XD Short Bed
    For the 2019 Nissan Titan XD short bed that has the factory gooseneck hitch (they all have it) you'd have to go the Demco route as the rail kit of the truck does not have enough points of contact to be used with a pivoting pin box like a Sidewinder. The Hijacker part # DM8550034 is what you'd want. It slides automatically and overall is a really great hitch. It is a bit heavy but comes apart in several sections to make installing/removing easier. Then to install it all you need is the rail...
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  • Will Demco Hijacker AutoSlide Fifth Wheel Hitch Fit Reese Elite Adapter RP30156
    Yes, the Demco Hijacker Auto Slide part # DM8550034 will fit the rail kit adapter part # RP30156 which is a fit for Reese Elite rail kits.
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  • Best Auto-Slide 5th Wheel Hitch Needed for 2019 Ford F-250 With Short Bed
    An autoslide 5th wheel hitch is going to make your life much, much simpler if you are towing a 5th wheel trailer with a short bed truck like your 2019 Ford F-250 Super Duty. The best autoslide hitch is the Demco Hijacker because of its highly secure jaw system which ensures a complete, secure connection to your trailer's king pin as well as its cushioned head which will give you a smoother and quieter ride while towing. The Hijacker is available in two different towing capacities, 18,000...
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  • Options to Extend Hitch Connection to help Make Turns on a 2002 Ford F-350 with 6-3/4 Bed
    The best option for you to increase the clearance needed to make turns with your 2002 Ford F-350 short bed truck would be to upgrade to a slider hitch that has a longer travel length. The Demco Hijacker Autoslide Hitch, # DM8550034 with # DM8552006-71 Custom Installation Kit, is a 5th wheel hitch that has an auto slide design that will give you 14 inches of additional clearance for making tight turns. The Demco hitch is an Autoslide hitch that automatically engages when make your turns....
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  • What Height Setting Should the Hijacker Autoslide # DM8550034 be on a 2017 Ram 2500
    We always recommend having at least 5" - 6" of clearance between the bed rails of your pickup, in this case your 2017 Ram 2500, and the trailer. The trick is that you also want your trailer to tow level. To find out what height your 5th wheel hitch needs to be you first of all need to measure from the ground to the king pin on your pin box. Then you need to measure from the ground to the bed of your Ram. The Demco 5th Wheel Rail Adapter # DM6099 that you are using adds an additional...
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  • How to Determine Correct Height Setting on Demco Hijacker Autoslide
    Thank you for providing those measurements! Since your 5th wheel hitch height is 47 inches, subtracting the bed height of 39 inches gives us the 8 inches you mentioned which is technically the setting you would need to use on your Demco Hijacker Autoslide # DM8550034. This poses a problem since the HIjacker is limited to a height adjustable from 15-1/4 to 18 inches tall. If your measurements are correct, this means that in order to tow your 5th wheel trailer with your 2019 GMC Sierra...
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  • Best Base Rail Kit for Demco Hijacker DM8550034 in 2019 Ford F-250 Super Duty
    You can still use your Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550034 in your 2019 Ford F-250 with a 6-3/4' bed, and the best rail system for this hitch and truck is the Demco Hijacker Premier Series Above-Bed Base Rails and Custom Installation Kit for 5th Wheel Hitches # DM8552031-71. The reason this is the best kit is because it does not require any drilling into your frame rails to install. This is not only great for your truck but also means the installation is going...
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Used Items Available
Used Picture for Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs
Used Picture for Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs
Used Picture for Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs
Used Picture for Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs
Used Picture for Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs

Condition: Installed

Notes: Item has been previously installed/ test fitted and is currenty fully assembled.

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Info for this part was:

Employee Joe V
Installed by:
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Employee Jeff D
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Employee Mike L
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Mike L
Employee Michael H
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Employee Adam E
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