1. Fifth Wheel Hitch
  2. Demco
  3. Sliding Fifth Wheel
  4. 21000 lbs GTW
  5. Hitch Only
  6. Double Pivot
Demco Hijacker Autoslide 5th Wheel Hitch w/ Slider - Single Jaw - Ford Super Duty Prep Package - 21K

Demco Hijacker Autoslide 5th Wheel Hitch w/ Slider - Single Jaw - Ford Super Duty Prep Package - 21K

Item # DM8550038
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Retail:$2,528.40
Our Price: $1,699.00
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Fifth Wheel Hitch

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Fifth Wheel Hitch DM8550038 - Premium - Single-Hook Jaw - Demco
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This hitch slides automatically when you turn to give you 14" of clearance for tight turns. A wraparound jaw provides a smooth ride and a locking bar offers added security. Base secures in underbed mounts and removes for full bed access. Call 800-298-8924 to order Demco fifth wheel hitch part number DM8550038 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 Hitch w/ Slider - Single Jaw - Ford Super Duty Prep Package - 21K. Fifth Wheel Hitch reviews from real customers.
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Demco Fifth Wheel Hitch - DM8550038

  • Demco
  • Sliding Fifth Wheel
  • 21000 lbs GTW
  • Hitch Only
  • Double Pivot
  • Premium - Single-Hook Jaw
  • 14 Inch Fore/Aft Travel
  • 5250 lbs TW
  • 15-1/2 - 18-1/4 Inch Tall

This hitch slides automatically when you turn to give you 14" of clearance for tight turns. A wraparound jaw provides a smooth ride and a locking bar offers added security. Base secures in underbed mounts and removes for full bed access.


Features:

  • 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 pin boxes
  • Rail-free design allows for full access to truck bed when hitch is removed
  • 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
    • Diamond-plate tread on hitch base adds unique styling
  • Fast, easy installation
    • Drops into the 4 receiver pucks that are built into your factory underbed rails
  • Made in the USA


Specs:

  • Application: 2011 and newer Ford Super Duty trucks with factory-installed towing prep package
    • 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 Glide Ride, Mor Ryde, Trailair Tri Glide, Trailair Flexair, Rota Flex, and 5th Airborne pin boxes
  • Gross towing weight: 21,000 lbs
  • Vertical load limit: 5,250 lbs
  • Travel: 14" front to back
  • Hitch height settings: 15-1/2", 16-3/4", and 18-1/4"
  • 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 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 specially designed to fit in the underbed rails of your Ford Super Duty factory fifth-wheel towing prep package. 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 OEM tow package receivers, 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 lower the hitch into the 4 puck receivers in your truck bed. Turn the handles to lock the feet into the pucks and secure the handles with the included safety pins. The hitch can be removed to give you full truck bed access. Simply remove the safety pins, turn the handles to unlock the feet, and lift the hitch out of the receivers.


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.



6107 Demco High Jacker Head Assembly for Auto Slide 5th Wheel Trailer Hitch - 21,000 lbs

6033 Demco High Jacker Adapter Plates for 5th Wheel Trailer Hitch - Ford OEM

Installation Details DM8550038 Installation instructionsAlternate Instructions DM8550038 Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Demco Hijacker Autoslide 5th Wheel Hitch w/ Slider - Single Jaw - Ford Super Duty Prep Package - 21K - DM8550038

Average Customer Rating:  4.7 out of 5 stars   (227 Customer Reviews)

This hitch slides automatically when you turn to give you 14" of clearance for tight turns. A wraparound jaw provides a smooth ride and a locking bar offers added security. Base secures in underbed mounts and removes for full bed access.

- DM8550038
by:
2017 Ford F-350 Super Duty

I’m happy with hitch. Check out these videos of install for Ford prep package and hitch. Using the hitch on a 2017 Ford F-350 SRW shortbed. I’m pulling a 2015 Keystone Carbon 327 37’ toy hauler 639654



- DM8550038
by:

Hitch works fine. Took me a while to find the right shims to get it to fit in the pick system. No hoist and by myself a little heavy to wrestle up and down to change shims. Would be nice if the instructions called out the shims to use based on the truck make and model. 906514



- DM8550038
by:

Awesome hitch. The autoside makes it a breeze to backup and turn, I would definitly buy the hitch again. I have had no problems with the power coat and the hitch looks as good as the day it was installed. 877124



- DM8550038
by:
2020 Ford F-350 Super Duty

I am very pleased with the products and service provided by etrailer 883059



- DM8550038
by:

This hitch is well worth the purchase, and etrailer treated us really well I guess I would say they have treated us very well on all of our purchases. The hitch worked very well on our trip home from Oregon all the way back to Alaska. I never had to worry about tight turns at all. 861054



- DM8550038
by:

We ABSOLUTELY love the Demco 5th wheel hitch. It is tough getting it in and out of the truck bed and we do certainly 2 strong people but it is well worth the effort. It works perfectly and is super easy to maintain. We did buy the cover for the head unit and love it. We would HIGHLY recommend this product. We pull a Grand Design 43' toy hauler. 850135



- DM8550038
by:

the Demco slider hitch I bought has performed as expected with no problems so far. I feel confident when taking sharp turns that my 5th wheel will keep its distance from the cab of my truck. The product is heavy duty and looks great too. 811896



- DM8550038
by:

First time i ordered from etrailer. Emily was a great help. Fast freight shipping,. The Demco fifth wheel auto slider is a whole lot of hitch. You need a strong friend to assemble and install this hitch. 805189



- DM8550038
by:
Dodge Journey

The product arrived intact and unscathed despite the long journey. I have not installed it yet but it is one beefy mother! Glad I went with the 21K just in case I decide to go with a bigger camper. The only thing is that 350# isn't as light as it used to be especially if you are alone to bring it into the garage! LOL 793794



- DM8550038
by:
Ford F-350 Super Duty

I have used the Demco Hijacker Autoslider hitch for a year now. It works perfect together with the capture plate for my 5th wheel. Heavy? YES, but this thing is a beast and works just like it was designed. I have towed our 16k pound 5th wheel with my short bed F350 for over 3000 miles now. Plenty of room to make turns without worrying about crashing my back window or cab. I also don't have to get out of the truck to release the slider when at the campsite, fuel station or other tight spaced situation we might encounter especially at night or during inclement weather. Once set up it only takes me minutes to install/ uninstall with a winch mounted in the ceiling of my garage using the Demco 5th Wheel Lifting Bracket. 794009



- DM8550038
by:
2016 Ford F-350 Super Duty

Good service and very fast. It was a little higher priced but I got free shipping so it equals out. Definitely a keep. Thanks 726212



- DM8550038
by:

Purchased this hitch 1 year ago. We travelled over 11,000 miles in our 4 month trip this past summer. This hitch performed flawlessly. It is sometimes hard to hook up if you are not perfectly straight with the trailer but after a little practice its not a problem. Very well made and I would buy it again. 720350



- DM8550038
by:

Had this for a year. Works very well. A bit heavy to remove but worth the confidence knowing this hitch is built heavy duty. Also not having my truck damaged is priceless. There is a routine that needs to be followed to lock in side rails. I put magnets on each side with a wrench on a tether so that I just reach down a grab the wrench for each side. Keep in mind, you need to back straight to hook up. Not designed to back in on a angle. That all being said, very pleased with this hitch and the great customer service from etrailer 636621



- DM8550038
by:
2012 Ford F-250 and F-350 Super Duty

It is a very nice hitch. (works great) The only draw back is you have to be square with the trailer. But other then that, it works as advertised and I think it will last a long time. I'm well satisfied with the hitch. 515233



- DM8550038
by:

works like it is abvertised 447633



- DM8550038
by:

Love this Demco product. Lisa at etrailer is superb. etrailer is top notch. 446556



- DM8550038
by:

Overall great product. 339581



- DM8550038
by:
2016 Ford F-350 Super Duty

The hitch has been working great. Most people who haven't ever seen one. It works great both forwards and backwards in tight situations. We have recommended this to all who have looked at it. Great unit. 308677



- DM8550038
by:

Best purchase I made. Unit is made with high quality and works great. Fit into the truck bed with ease. I would recommend this hitch to anyone looking for a high quality 5th wheel hitch. 305301


Comments
Unit works better then expected, I would recommend it to anyone looking for a quality fifth wheel hitch.
Kent V - 10/11/2017

29079

- DM8550038
by:
2014 Ford F-250 and F-350 Super Duty

Great item. Easy to install and remove, But i have a tractor w loader that helps me do it. Makes turning a breeze, dont have to get out and unlock or lock like other brands. 288200



- DM8550038
by:
Ford F-250 Super Duty

Very high quality product. Used on a extended cab short bed F250 and the sliding mechanism provides plenty of clearance between the Fifth Wheel front and the truck's cab. Fits Ford's factory fifth wheel bed mount holes perfectly. Used to tow a 42' fifth wheel regularly. Foot print is small enough to allow me to retain my tool box in the truck during towing. The hitch is heavy! Do not plan to try to install with one person with out an engine hoist or gantry crane. Two strong people can, but extreme caution should be taken as the hitch weighs nearly 300lbs and is awkward. 277844



- DM8550035
by:

Review from a similar Hijacker Autoslide in Fifth Wheel Hitch


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 853636



- DM8550034
by:

Review from a similar Hijacker Autoslide in Fifth Wheel Hitch


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. 845680



- DM8550024
by:

Review from a similar Hijacker Autoslide in Fifth Wheel Hitch


Very happy with my Demco Autoslide hitch after one year. We pull a Montana 3120 35 ft 5th wheel with a 2019 Ford F-350 short bed. Took a month long 6,000 mile trip from Colorado to New England/Canada this Summer. Lots of hilly/curvy roads and some remote campgrounds with tight corners and some near 80 degree back ins. Never came close to trailer contacting the truck. I’ve had no jerking or other issues when turning or stoping/starting. Works great. The only drawback is there isn’t much room for error when you back up to hook up the trailer, so it takes a little practice to get used to correctly lining up your Demco Hitch to the trailer. The first couple of trips, it took me 3 or 4 attempts to properly line it up. No longer an issue for me after a few trips and you get used to the angles. It weighs about 300 pounds. I got a small chain hoist which I installed in my garage rafters and easily lift the hitch in and out of my truck and just let it hang front he rafters until I need to use it. 705916


Comments
One thing to consider - there are a lot of small springs and levers working inside the hitch head to work the king pin jaws. While this 5th wheel hitch is certainly robust and designed to take a beating from your 5th wheel when towing, it wasnt designed to support its own weight for extended periods of time.
-- Victoria B - 10/02/2019

62617
Comments
Now been two years and have about 15,000 miles on my Demco Autoslide Hitch. Still works terrific with my 35 ft Montana on the F350 truck. Never a problem traveling or hitching up.
John T - 09/23/2020

100361

- DM8550024
by:

Review from a similar Hijacker Autoslide in Fifth Wheel Hitch


The Demco Auto slide takes the worry out of towing my fifth wheel trailer with a short bed F-350. I have had no problems with backing into tight camping spots. And since everything is automatic I have one less thing to worry about while traveling with a fifth wheel. The only problem is that it is a little on the heavy side, so I just leave it in the truck when not towing. Problem solved. I am extremely happy with the product. 708027


Comments
For anyone else wondering how to use a MOR/ryde pin box with their Demco Hijacker Autoslide, you can use the Locking Plate # DM6025
Demco Hijacker Autoslide Locking Plate for MOR/ryde Pin Boxes
$188.90
.
-- Victoria B - 10/07/2019

62715
Comments
After over a year of towing with the Demco Auto slide I am very happy with its performance. Never a worry about tight turns with a short bed truck.
Raymond F - 09/27/2020

101494
37
266
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Ask the Experts about this Demco Fifth Wheel Hitch

  • Best Fifth Wheel Hitch for 2019 Ford F-350 Super Duty Short Bed With Factory Puck System
    The best fifth wheel hitch for your 2019 Ford F-350 Super Duty short bed with the fifth wheel prep package is the Demco Hijacker Autoslide because you will never again need to get out of your truck just to make a turn, and because it uses a strong single-piece jaw which ensures a complete, secure connection to your king pin. The Hijacker will fit directly in the puck system of your 2019 F-350, as you can see in the accompanying photo, and is available in two different towing capacities,...
    view full answer...
  • Troubleshooting Demco Hijacker Autoslide Making Noise
    How old is the hitch? Does your fifth wheel have a standard pin box or a cushioned pin box? Has it been lubricated? Does the locking bar automatically lock when the jaw closes? The thing that comes to mind immediately is the capture plates may not be adjusted properly. They MUST be evenly on both sides to 1/8" more than the width of the pin box.
    view full answer...
  • Upgrading Demco Hijacker Autoslide 5th Wheel Hitch for Ford OEM Puck Compatibility
    Since you have the Demco Hijacker Autoslide and a Ford truck with OEM pucks you simply need the Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitch - Ford Super Duty # DM6033. This will make your hitch fit your factory pucks perfectly whether the hitch itself is rated for 18K or 25K.
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  • What Is Needed To Install the Demco Hijacker Autoslide On a 2019 Ford F-350 with Pucks
    The Demco Hijacker Autoslide 5th Wheel Hitch w/ Slider part # DM8550038 comes with everything that you need to install this on your 2019 Ford F-350. The Demco Hijacker will drop right into the pucks and there won't be any adapters needed for this.
    view full answer...
  • Gooseneck Hitch For 2019 Ford F-250 Super Duty
    I do have a solution for you but the Demco Hijacker part # DM8550038 is a fifth wheel hitch that fits the factory puck system in Ford F-250 and F-350 Super Duty 6-3/4 ft bed. It does not come with a goose neck ball. If you have a 2019 Ford F-250 Super Duty with short bed with the OEM package and need a goose neck hitch I recommend Curt Goose neck Kit part # C60692 to fit into the factory puck holes. Please let me know if you do not have the OEM package and I can recommend another part.
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  • Best Sliding 5th Wheel Hitch for 2019 Ford F-350 With Prep Package
    Congrats on your retirement and the perfect 5th wheel hitch that has everything you are looking for is the Demco Hijacker Autoslide because you will never need to get out of your truck just to make a tight turn - it slides completely on its own. It also has a 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. All of these things will allow you and your...
    view full answer...
  • How Much Does the Demco Hijacker Autoslide 5th Wheel Trailer Hitch Weigh
    The Demco Hijacker Autoslide, part # DM8550038, is a fairly heavy fifth wheel hitch. Its shipping weight is 321 pounds so take off a little for shipping materials but you're still looking at more than 300 pounds, for sure. Despite its weight the Hijacker is a great hitch. It's the only automatic sliding hitch we carry but that's a great feature since you won't have to get out of your truck to engage the slider. It also has great jaw contact and it's made in the USA. I've linked...
    view full answer...
  • Bucking and Chucking with Demco Hijacker on 2020 GMC Sierra 3500 With Factory Puck System
    I reached out to my contact at Demco to see if they have ran into this problem as well, as of right now they have not had trouble with the new GM system. When GM redesigned the full size trucks, they also redesigned the factory puck systems which did move it back towards the tailgate slightly. I am not aware of any way to move the pucks forward or adjust the hitch closer to the cab. However moving it back slightly like GM did helps with clearing the cab in tight turns if you have a short...
    view full answer...
  • How to Tell if 2018 Ford F-250 Has Puck System to use Demco Hijacker Autoslide
    While the best and most certain way to tell if your 2018 Ford F-250 has the puck system is to call your local Ford dealer with your VIN, it should be pretty easy to tell otherwise. If your bed looks like the accompanying photo - with four accessible holes (pucks) and a gooseneck in the middle - you have the puck system. You can also tell based on how your B&W Companion mounts. If you insert it into the pucks you have the B&W Companion OEM 5th Wheel Trailer Hitch with Slider for Ford...
    view full answer...
  • Demco Hijacker Autoslide 5th Wheel Hitch will Not Lock in Pucks Of 2016 Ford F-250
    I called my contacts at both Reese and Demco and asked about the differences in the pucks for your 2016 F-250. It seems with an aftermarket gooseneck puck system like part # RP30126, there is a button bolt that holds the pucks to the rails under the bed of your truck. That bolt is not there when a factory system is installed. The head of the bolt is causing the depth of the puck to be less and causing the locking pins to bottom out. I called my contact at Demco and they said that...
    view full answer...
  • What Height Setting Should Demco Hijacker Hitch Head be Set At
    The height setting really depends on the trailer you plan on towing. You want to go with the setting that allows the trailer to be towed as level as possible. One size does not fit all as trailer and truck heights vary slightly so that's why the hitch has a few settings you can pick from.
    view full answer...
  • Will Demco Hijacker Autoslide Fifth Wheel Hitch for Ford Factory Rail Kit Have Turn Clearance
    Sounds like you are looking for the formula for determining if you have enough clearance to make 90 degree turns with a fifth wheel trailer hitched up to a truck. The formula you are referring to is this: (A + B) - C = Clearance A = Distance from the fifth wheel jaw center to the truck cab B = Offset used (slider clearance or Sidewinder offset) C = Width of the nose of the trailer divided by 2. So the numbers you listed would look like (41 + 14) - 51 = 4 inches of clearance....
    view full answer...
  • Auto-Sliding 5th Wheel Hitch for 2017 Ford F-350 Super Duty Towing Keystone Raptor 355TS
    If your 2017 Ford F-350 short bed has the factory 5th wheel rail kit you can use the 21K Demco Hijacker autoslide hitch # DM8550038 which will drop right into the factory pucks and provide 14-inches of slider travel automatically when you make a sharp turn. For a manual slider that will also fit the Ford factory rail kit the 20K B&W Companion Slider hitch # BWRVK3370 offers 12-inches of slider travel and among the best build quality of any 5th wheels. The Companion features a fully-articulating...
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  • 5th Wheel Hitch Recommendation For A 2018 Ford F-350 Short Bed With Prep Package
    For your 2018 Ford F-350 short bed with the factory hitch prep package, the Demco Hijacker AutoSlide Hitch, Item # DM8550038, will work well for you. It is a confirmed fit for the 4 receiver puck system in your truck and will automatically slide back when you are in a tight turn to give the clearance you need. You will need locking plates to use a Trailair pin box like the Demco Hijacker Autoslide Locking Plate, Item # DM6095. With regards to maintenance, follow the guidelines in...
    view full answer...
  • Troubleshooting Excess Slack In Demco Hijacker Autoslide Fifth Wheel Hitch Head
    I called my contact at Demco and asked about the slack you said you have with the # DM8550038 on your 2016 F-250. On the forward side of the hitch(closest to the cab) there is a bolt you can make a bit of adjustment with to tighten the head up. My contact said you would need to loosen the jamb nut first and then turn the bolt 1/8 of a turn at a time, then tighten the jamb nut and see if that eliminates the problem. That should take care of any of the slack you said the hitch has. If...
    view full answer...
  • Recommended Fifth Wheel Trailer Hitch for 2017 Ford F-350 with Short Bed and Factory Tow Package
    Gooseneck and fifth wheel trailer hitches connect to the frame in some way. However, a gooseneck hitch is connected directly to the frame with just the hitch ball for connection to the trailer. A fifth wheel hitch has brackets that connect to the frame, and then either rails or pucks (What you have on your factory kit) to connect to the fifth wheel hitch. Since the hitch is what connects to the trailer there is more in between the trailer and truck's frame. So gooseneck hitches generally...
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  • Side Rail Spacer Size for the Demco Hijacker 21
    The spacer that is included with the Demco 21k Hijacker part # DM8550038 that goes between the attachment bracket of the hitch and the main body of the hitch is 3/8 of an inch thick. If you check out the install instructions link I attached it's item number 14.
    view full answer...
  • Best Fifth Wheel Towing Setup for 2017 Ford Super Duty Factory Rail Kit
    Not to confuse you even further but if you are looking for a smoother ride quality than a sliding hitch I have a better option for you to consider. If you replace the pin box on your trailer with a Sidewinder you will get the benefit of the auto slide fifth wheel hitches without all of the moving parts and weight of a slider hitch. Plus the trailer will track better behind the truck and will back up much easier. If you are looking for a solution that is better than the Demco and the...
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  • Comparing Demco Hijacker Sliding Fifth Wheel Hitches for 2019 Ford F-350 With OEM Pucks
    Aside from the weight rating there is really only one very slight difference; the 21K Demco Hijacker Autoslide 5th Wheel Hitch # DM8550038 has a diamond tread pattern on the base while the 18K Demco Hijacker Autoslide 5th Wheel Hitch # DM8550024 does not have this pattern. That diamond tread pattern is only for aesthetics and does not affect the hitch in any way. You are not alone in loving the Hijacker as it is one of the best and most popular fifth wheel hitches we sell for a reason....
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  • Comparing Demco 5th Wheel Auto Slide Hitches 21K DM8550038 and 18K DM8550024
    Demco 5th wheel hitches # DM8550038 and # DM8550024 are both confirmed fits for your 2015 Ford F-350 with the factory installed 5th wheel kit. Both are drop-in installations and both hitches include the automatic slider feature and a generous 14-inches of front-to-back travel for excellent turning clearance. The Demco hitches do include cushioning in the form of polyurethane dampeners that work to reduce noise and shocks from road surfaces. Construction of the Demco hitches is quite...
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  • Will Demco HiJacker 5th Wheel Hitch and Auxiliary In-Bed Fuel Tank Fit a 2016 Ford F-350 Short Bed
    On the Demco 21K HiJacker 5th wheel trailer hitch, # DM8550038, for your 2016 Ford F-350 short bed there is an easy way to determine if there is enough space to use the hitch with an auxiliary fuel tank in the truck bed. The hitch measures approximately 3-1/2 inches from the center of the forward most pucks in the truck bed to the end of the hitch assembly closest to the front of the bed. But I would allow for a little more space, 5 or 6 inches, just to be on the safe side and ensure...
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  • Best Fifth Wheel Hitch Recommendation for 2017 Ford F-250 Short Bed with Rail Kit
    The hitch I would recommend for your 2017 Ford F-250 short bed with the factory rail kit is the Demco Auto Slider part # DM8550038. This hitch has a 21k capacity, but what really makes it nice is that it attaches directly to your rail kit and automatically slides as you make tight turns instead of forcing you to get out of your truck every time you need to slide the hitch. It's not super lightweight but can easily be broken down into smaller sections to make removing it easier. I attached...
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  • Compatibility Of Install Points With Spray In Bedliner
    Me and my contact at Demco RV confirmed the following information: The # DM8550038 is a 21K Auto Slide for a Ford with the factory 5th Wheel Prep System. The Demco auto slide will set down on the Ford Factory installed pucks. I would assume the shop applying the bed liner taped off the pucks and didn’t cover them with liner. If so, the liner may need to be removed just from the top of the pucks. There are also 2 shims at the tops of the pins on the mounting plates. The install...
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  • Is Sliding 5th Wheel Needed with Tapered-Nose 5th Wheel Trailer Towed by Short-Bed Pickup
    Some late-model 5th wheel trailers do have a tapered front that provides better turning clearance for towing with a short bed truck. Some very-short-bed pickups with a 5-1/2-foot bed would potentially still need a sliding hitch - even with a tapered-nose trailer. For a standard non-tapered trailer your pickup would definitely require a slider hitch such as the Demco Hijacker Autoslide # DM8550038. But for your 6-3/4-foot-bed F-350 the B&W Companion # BWRVK3300 fixed hitch will ensure...
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  • Demco Hijacker AutoSlide 5th Wheel Hitch Placement in 2017 Ford F-350 Short Bed
    To install the Demco Hijacker 21K AutoSlide 5th Wheel Hitch # DM8550038 in your short-bed 2017 Ford F-350 Super Duty that has the factory puck system you will want to position the hitch on its mounting wings so that the center of the jaws is over or 1-inch in front of the axle center line. Since this is an auto-sliding hitch anyway you could actually use the more-forward position if the trailer's front profile was tapered and available clearance allowed it, but in general the king pin...
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  • Recommendation on Which Demco Hijacker Autoslide 5th Wheel Hitch to Fit a 2017 Ford F-350
    On your 2017 Ford F-350 Super Duty and your Raptor 352TS Toy Hauler you could use either Demco Hijacker 5th Wheel Hitch. Looking at all the information that you supplied, it looks like the total gross trailer weight of your trailer will be the shipping weight and the carrying capacity added together. In this case, the total gross trailer weight will be 16,840 lbs. This number will be the trailer fully load to its capacity. At 16,840 lbs, the Demco Hijacker, # DM8550024 rated a 18,000...
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  • 5th Airborne/Sidewinder Pin Box and Curt 5th Wheel Hitch Recommendation for 2018 Ford F-250
    The 5th Airborne/Sidewinder pin boxes are fantastic options for towing a trailer with a short bed truck. This way you can use a lighter fixed hitch and also not every have to mess with activating a slider mechanism. You will need to remove the pin box of the trailer and replace it with a Sidewinder pin box. Sidewinders are pin box specific so you will first need to know what pin box you have now in order to pick out the correct one. There should be a sticker or a stamping on the...
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  • Demco Hijacker Auto Slide Fifth Wheel Hitch/Rail Kit Recommendation for 2008 Ford F-250 Short Bed
    We have just what you need to install a Demco Hijacker AutoSlide fifth wheel hitch in your 2008 Ford F-250 short bed. The hitch you would need is actually the part # DM8550035 as it is the above bed rail kit. The rail kit you then would want is the part # DM8552002-71 which is custom fit for your truck which will minimize drilling and install time.
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Info for this part was:

Edited by:
Lindsey S
Expert Research:
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Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Installed by:
Jeff D
Video Edited:
Jacob T
Updated by:
Laura H
Updated by:
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Amanda M
Updated by:
Kristina F
Video by:
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Written by:
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Test Fit:
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