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  1. 5th Wheel Hitch
  2. Demco
  3. 21000 lbs GTW
  4. Aftermarket Below Bed Rails
  5. Sliding Fifth Wheel
  6. Premium - Single-Hook Jaw
Demco Autoslide 5th Wheel Trailer Hitch for Chevy/GMC and Dodge Ram - Single Jaw - Above Bed - 21K
Demco

Demco Autoslide 5th Wheel Trailer Hitch for Chevy/GMC and Dodge Ram - Single Jaw - Above Bed - 21K

Part Number: DM78QV
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$2,293.95
5th Wheel Hitch
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No more getting in and out of your truck to mess around with a manual slider. This hitch slides automatically to give you 14" of additional clearance for tight turns whenever you need it. Custom brackets and base rails included. 1-800-940-8924 to order Demco 5th wheel hitch part number DM78QV or order online at etrailer.com. Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Autoslide 5th Wheel Trailer Hitch for Chevy/GMC and Dodge Ram - Single Jaw - Above Bed - 21K. 5th Wheel Hitch reviews from real customers.
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  • Reviews (632)
  • Q & A (0)
  • Videos (4)
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Demco 5th Wheel Hitch - DM78QV

  • 21000 lbs GTW
  • Aftermarket Below Bed Rails
  • Demco
  • Sliding Fifth Wheel
  • Premium - Single-Hook Jaw
  • Double Pivot
  • 5250 lbs Vertical Load
  • 15-1/4 - 18 Inch Tall
  • 14 Inch Fore/Aft Travel

No more getting in and out of your truck to mess around with a manual slider. This hitch slides automatically to give you 14" of additional clearance for tight turns whenever you need it. Custom brackets and base rails included.


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
  • 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
  • Simple installation with included base rails and installation kit
  • Made in the USA


Specs:

  • 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, Lippert Road Armor, 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: 15-1/4", 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 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, Rota Flex, Lippert Road Armor, 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 mount to the included industry-standard base rails, which install in your truck bed and are anchored to the included custom brackets that attach to your vehicle's frame. 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" + 14" = 50". If your fifth-wheel trailer is 84" wide, take half (42"), then plug in: 50" - 42" = 8" of clearance.


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



8550035 Demco Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 21,000 lbs

6003 Demco Ultra Adapter Plates for Hijacker Auto Slide 5th Wheel Trailer Hitch

6071 Demco Bed Rails for High Jacker Premier Series Fifth Wheel Trailer Hitches

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

8552009 Demco Universal Bracket Kit for High Jacker Premier Series Fifth Wheel Trailer Hitches

Installation Details DM78QV Installation instructionsAlternate Instructions DM78QV Installation instructions



Video of Demco Autoslide 5th Wheel Trailer Hitch for Chevy/GMC and Dodge Ram - Single Jaw - Above Bed - 21K

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Demco Autoslide 5th Wheel Trailer Hitch for Nissan Titan Review

Jeff Hello, everybody. This is Jeff at etrailer.com. Today, we're gonna take a look at the replacement side plates for the Demco Hijacker Autoslide above bed mount fifth wheel trailer hitches. Now these will replace the side plates that came standard on your Demco Hijacker Autoslide above bed fifth wheel trailer hitches. It is designed to fit the Demco 13,000 pound, part number D-M-8-5-5-0-0-4-0 model. Fits the 18,000 model, part number D-M-8-5-5-0-0-3-4.

And it also fits the Demco 21,000 pound model, D-M-8-5-5-0-0-3-5. All three of those models we do sell separately on our website. Now when these side plates are attached to your Autoslide assembly it'll allow you to install your fifth wheel hitch in to your universal above bed base rails. These are a simple bolt on installation tier hitch base. You can see it does have multiple rows of bolt holes.

And the reason they do that is it let's you adjust your hitch height that you need for your application. It'll give you three different hitch height settings. Either 15 1/4 inches, 16 1/2 inches, or 18 inches. And the hitch height is critical because you wanna be able when you're towing your fifth wheel to be as level as possible. And the hitch height is always measured from the bottom of the truck bed to the top of the hitch head.

Now the finish on these, they have a nice rust resistant black powder coat finish on them. It is a steel construction. Does include everything shown here. Includes all the mounting hardware. All the pins and clips that'll attach it to your base rails.

And the nice set of instructions that'll describe how these install. And how it operates. But that should do it for your review on the replacement side plates for the Demco Hijacker Autoslide above bed mount fifth wheel trailer hitches..


Customer Reviews

Demco Autoslide 5th Wheel Trailer Hitch for Chevy/GMC and Dodge Ram - Single Jaw - Above Bed - 21K - DM78QV

Average Customer Rating:  4.7 out of 5 stars   (632 Customer Reviews)

No more getting in and out of your truck to mess around with a manual slider. This hitch slides automatically to give you 14" of additional clearance for tight turns whenever you need it. Custom brackets and base rails included.

by:

I think that etrailer requires their employees to lie so as not to have any confrontations with customers on the phone. I placed two orders on 8/23 and immediately received followup emails that order received, order processed by (employee name) and then is in stock with associated time each step completed.
Then I noticed that shipping date kept getting 1 day later each day I checked order status. So, I contacted etrailer on day 5, 8/27 and find out my item was not in stock at all and would not be until mid Oct. Well,I then had them order me the same part by a different manufacturer and was told that it was in stock and would still be still be shipped 8/28 and delivered on 8/30, the same day my fifth wheel hitch is being delivered, so everything seemed rectified until I checked order status online the evening of 8/28 and find that the ship date again had been pushed back another day 8/29 with a delivery date of 9/1, (which is a Sunday). Seems that at this rate I may have it sometime in September. Going by their assurance of delivery on 8/30, I arranged to pickup my new camper on 9/5, that seems to be an impossibility at this time because Order #121389499 the installation kit with base rails is a very necessary part of the assembly. So, in closing I can only say that if you do not have the parts to ship, be honest and state the truth. This has made me feel very negative now toward etrailor as I already had become with Camping World. Is there any honesty in the RV parts aftermarket?



by:

This review is for the Demco Autoslide 21k and accompanying OEM rail adaptor I purchased for a 2020 Ram 3500 Megacab DRW. I've owned it one year. Overall, the hitch performs as I expected. It is high quality, very sturdy and seems like it will last for a long time. I had it installed at the dealer when I purchased the truck. It automatically slides to protect the cab in my 6'4" bed without any incidents. I tow a standard fifth wheel RV. There are a few negatives, which are not necessarily shortcoming of the product but, instead, necessary evils to allow me to have a short bed. First, it is BIG and BULKY. I believe this is just a function of the mechanism required to allow the autosliding feature and I am not really sure there are any other lighter alternatives with this feature. The fact it requires two parts (OEM Puck Rail and hitch), make it even more bulky. It takes up almost the entire bed and prevents most auxillary tank / tool box combos from fitting. Even standard size storage bins will not fit in my bed. I would prefer if they had a custom OEM all-in-one hitch for my truck like they do for the Ford. It adds significant weight, which decreases carrying capacity, which can be at a premium in hauling a heavy fifth wheel. I've never even tried to take it out of the bed due to the weight and difficulty. I also am not very happy with the adjustable catch plate design. It requires significant manipulation loosening and tightening 8 nuts when hitching and unhitching. This requires a step ladder to reach the nuts. I also found out after the fact that it does not come with the right size catch plate attachments for my hitch and I had to purchase a separate part, which added unexpected expense and delayed my taking the RV on its first trip. Overall, I am satisfied with the hitch.



by:

I have not received the Autoslide trailer hitch only the locking plate.
When will I get the hitch??



by:

This is a quality piece of equipment. I can't wait to use it. The installation directions were complete and easy to follow. Looks fantastic.



by:

Great hitch. No capture plate to deal with, you can hook up to any 5th wheel. No more greasy pin box. No more watching the mirror wondering if your going to hit and damage the cab of your truck. Works perfectly. Built solid, though I did purchase the 21K for a 15K 5th wheel. Easy to lube. The only drawback I had was that it sat just a little bit high in the truck even on the lowest mounting holes. If you are thinking of purchasing this you may want to take some measurements first. I have an 08' F350 SD with air springs so it does set high. Before I bought it I called the factory (easy to reach and eager to help) and asked them, among other things," if the hitch broke, could I easily get parts for it?" They replied that if you need parts we will get them to you wherever you are. Overall I think this is the best hitch on the market.



by:

I wish the place I bought my camper would have recommended this from the start. Makes owning a 5th wheel so much easier!



by:

I had trouble with this hitch at first. I could not get it to close and latch properly when I backed into the king pin. I worked with tech services and ended up replacing the inner pivot parts and I have really not had any issues since. Because I have to have the locking plate for my pin box, you do have to line up the truck just right for it to latch properly, but once you figure that out, it is easy. The auto slide feature works really good. I have a short bed RAM truck and I have completely turned 90 degrees with my trailer attached and it slides back with no issues to miss my cab. I highly recommend this hitch. Also the Demco Tech Services guys are great to work with.



by:

Best 5th wheel hitch ever for a RAM 3500 mega cab.
No issues with the RV coming close to the back of the cab or back glass.
I would recommend this hitch to anyone searching for a 5th wheel hitch for a Ram mega cab, I wish I knew about it when I first purchased my Ram mega cab, I learned the hard way, after busting out my back glass...and trying several hitches. This hitch is truly an autoslide. I have showed several short bed guys this hitch and told them the cost of the 5th wheel hitch is worth it.... It is top of the line. This will be the last 5th wheel hitch I will ever need to purchase.



by:

The product, bed rails and kit for 5th wheel hitch were good quality and installed easily enough, but the product was shipped in cardboard and it was heavy and broke through the box and some of the nuts and bolts were missing. Box arrived with big holes in each end. etrailer was good and shipped the missing parts but it cost me several days delay and unnecessary hassle. They just need to figure out how to ship without the box breaking up. Good product, good customer service, not so good shipping.



by:

Pretty pathetic service from etrailer. Order place on Aug 25th with ETA of the following Friday (1o days). But nope, I wait. It finally (and supposedly ships) on Sept 7th (13 days later). On Sept 14th I received a confirmation that my items were delivered, but nope. Not to my house anyway. Avoid these folks if you want something to arrive when they say it will arrive.



by:

Works great except life would be so much simpler if they had a hole drilled on each side to remove the lock pins that are below it in the mounting plate to be able to remove the unit from the truck.



by:

It works really well. It is really nice not to worry about the 5th wheel trailer clearance when making tight turns. We pulled the rig several hundred miles last summer and at least 3000 more since January with no issues.
Also I used the height adjustment feature when setting up my trailer.

When I received the shipment I was impressed by how well it was packed. It would have been nice to had had help, but I was able to assemble and mount it myself. The instructions were good, and as I said, we have had no issues during our first snowbird season.



by:


If you have to have a slider this is
the one to buy. I’ve now driven with it about 5000 miles..the only down side is that you have to hook and unhook with the truck perfectly straight in line with the trailer. But it does work perfectly as advertised.



by:

We received the hitch in great shape. The boxes were in very good shape. The only problem was a missing polyurethane dampener that was’t included. I called and received great service from etrailer. I have had a demco autoslide for several years but it was an 18000 pound hitch and went to a 21000 pound hitch. They are the best hitch for a shortened truck on the market



by:

This is an initial impression review. The hitch was delivered on a pallet and arrived earlier than expected. Everything was well packaged with all associated hardware. This hitch was mounted on Reese Quick-Install Custom Outboard Installation Kit w/ Base Rails for 5th Wheel Trailer Hitches ( in the bed of a 2007 Dodge Mega Cab 3500. Overall it appears to be well constructed, unfortunately, I did have issues with bolting the hitch adapters to the hitch. The hardware is either grade 3 or 5 (looks like 5) and did not torque well. I had one bolt that stretched and sheared before I reached the torque spec (photo attached). I'm not sure if this was designed to use the weaker hardware or a business decision, however, all eight bolts were replaced with grade 8. I do look forward to utilizing this hitch in a few months. I would at photos, however it appears that I can't.



by:

Very happy with the product. The only draw back is the weight. Can't be loaded/unloaded by one person.
A good cross-sell opportunity is to offer a tool for removal.

When I first got it, it didn't fit the truck. Support team was helpful and responsive. It seemed to be due to the bed spray. I was able to get it to mount perfectly by loosening a bolt under the truck, and then smoothing the edges of the locks in the rails.



by:

thanks to Greg S. he helped me a lot in choosing and answering all my questions



by:

Made installing my Anderson Ultimate 5th wheel kit a snap! These rails are sturdy and well-made and will probably outlast the truck (which is still going strong at nearly 300,000 miles). I can tow my Bigfoot 5th wheel with ease and confidence.



by:

Extremely well made product and as always arrived in perfect condition. Etrailer is my go to for all things trailer related and is the first place I look!! They have the best prices around and stand behind every sale which gives me confidence in every purchase. I love this hitch and look forward to many years of towing with it! Thank you again etrailer!!



by:

Really like this hitch. Two things I don't like however, are 1) you need to backup almost perfectly the way you unhooked or it's a bear to hitch backup. 2) I don't like the bolts for the pinbox. Wish there was a quicker alternative. Hate getting a wrench out to tighten and losen.



by:

Good hitch but very heavy and hard to maneuver
If
that's not an issue it works perfect
Don't have to worry about turning with 6,4 bed
Etrailer great job shipping , etc



by:

The hitch and adaptor arrived in three days. Everything went together fairly easy considering I had just torn my rotator cuff a week earlier and my helper never showed up. Definitely would have been easier with two people. Had planned a trip next week to Yellowstone National Park but will have to wait until after surgery. Will do a follow up review after I am able to see how well auto slide works. Great customer service!



by:

Purchased a heavier 5th wheel so this one replaced my pull rite. No more capture plate to deal with. Very happy with this hitch.



by:

Worked good but a lot of adjustments. They sent the wrong capture plates. Demco customer support was great.



by:

This sliding hitch is great. I have no worries about my fifth wheel crushing my truck cab. It's the real deal.


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  • Fifth Wheel Hitch and Rail Kit Recommendation for 1996 Toyota T100
    For your 1996 Toyota T100 truck you would need a slider hitch to allow you to make tight turns without truck cab interference. For that the best option is the Demco Auto slide part # DM8550034 which will automatically slide as you make tight turns. You will need the separate fifth wheel rail kit to go with it as well which is part # DM8552009-71. There will be drilling into the frame and bed as well.
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  • 5th Wheel Trailer Hitch and Installation Kit Recommendation for 2006 Chevy Silverado 1500 Short Bed
    There are 2 short beds for the 2006 Chevy Silverado 1500; a 5-1/2 foot bed and a 6-1/2 foot bed. If your truck has the 6-1/2 foot bed than the regular slider hitch can work. But if you have a 5-1/2 foot bed the regular slider hitch will not offer enough travel to safely make 90 degree turns. For the 5-1/2 foot bed I have an excellent solution if the gross trailer weight is less than 13,000 pounds. You can use the Demco HiJacker, # DM8550040, with installation kit # DM8552009-71, for a...
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  • Fifth Wheel Hitch and Rail Kit Recommendation for 2006 Chevy Silverado 1500 5-1/2 ft Bed
    For your truck bed that is 5-1/2 feet long there is only one slider hitch that would have enough clearance to allow you to make tight turns. For that you would need the Demco Hijacker part # DM8550040. This will automatically slide back 22-1/2 inches and would work well. For rails you would need the custom install kit part # DM8552009-71. This is a custom install kit that minimizes drilling and install time over universal kit.
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  • Recommended 5th Wheel Hitch for 2001 Dodge Ram 1500
    To determine the best 5th wheel hitch for your 2001 Dodge Ram 1500, you need the gross vehicle weight rating of your trailer. This will determine the weight rating you need for your 5th wheel hitch. For example, if your trailer comes in under 18,000 lbs, I recommend the Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550034 and Installation Kit # DM8552009-71. This fifth wheel hitch features Demco's Autoslide, which makes turning corners easier by automatically sliding the head assembly...
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  • Fitment of Demco AutoSlide Hitch for 2016 Ford F-150 5.5 Foot Bed
    I can help answer the questions you're having about this Demco AutoSlide 5th Wheel Hitch. Demco designed this 13K Hijacker AutoSlide 5th Wheel Hitch # DM8550040 with the 5-1/2 foot beds in mind. As you turn this hitch will give you an extended distance of 22-1/2 inches, which is crucial to most short bed truck owners when making sharp turns. So, this Demco 5th Wheel Hitch will work great for your 2016 Ford F-150. The Demco AutoSlide # DM8550040 is compatible with industry standard above...
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  • Slider Fifth Wheel Hitch Recommendation for 2007 Chevy Silverado 1500 5-1/2 foot Bed
    We do have slider hitches that will fit the very short bed length you have of 5-1/2 foot. For that the Demco part # DM8550040 will be your best option. It can slide 22-1/2 inches which would be what you would need to make a tight turn in your 2007 Chevy Silverado 1500. For a set of fifth wheel rails for your truck you'd then want the part # DM8552009-71 which is confirmed as a fit.
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  • 5th Wheel Base Rail Installation Kit for 2002 Toyota Tundra Limited 4x4
    We can help you with a 5th wheel installation kit to let you mount the 5th wheel hitch of your preference. For your Tundra I recommend the industry-standard Demco universal base rail kit # DM8552009-71 because this kit includes all the under-bed hardware and brackets needed to install a 5th wheel hitch. Install instructions are linked. Custom-fit installation kits are not presently available for your truck. Also a helpful article is linked to assist you with your installation.
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  • Fifth Wheel Rail Kit Recommendation for a 1997 Dodge Ram 2500 Long Bed
    Either of the rail kits you referenced would work well in your 2007 Dodge Ram 2500 with an 8 foot bed. You should note that while these rail kits are listed as custom fit kits they will install more like a universal one as the L-brackets are the same as the universal kits. Because of that I would go with the Reese universal rail kit part # RP30035 as it has the best price and would work well with your Curt hitch. I attached an install video for you to check out as well.
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  • Brackets & Base Rails For 1995 GMC C/K Short Bed Truck
    The exact brackets and base rails you will need for your 1995 GMC with a 6-1/2 foot bed is the following: - Demco Premier Series Above-Bed Base Rails and Universal Install Kit for 5th Wheel Hitches # DM8552009-71
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  • Fifth Wheel Hitch Recommendation for 2005 Chevrolet Silverado 1500 LD 6.5 Foot Bed
    First, I recommend checking your owner's manual for your Silverado's maximum towing capacity. From what I found, Chevy has determined that fifth wheel and gooseneck trailers should not be towed with the 2005 Silverado 1500 Crew Cab. For example, The owner's manual for the Silverado 1500 Crew Cab, 4 wheel drive, 5800 V8, with an axle ratio of 4.10 lists a maximum towing capacity for the vehicle of 8,400 pounds. So as to not damage your truck, I recommend making sure the gross towing weight...
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  • Lube Plate Compatibility With Demco 21K Autoslide 5TH Wheel Hitch and Lippert Rhino Box Adapter
    Demco recommends using a 3/16" or thinner Lube Plate # 16721 with their Autoslide 5th Wheel Trailer Hitch # DM8550035. With the addition of the Demco Autoslide Locking Plate for Lippert Rhino Pin Boxes # DM76FR you have I recommend using a dry lube on the mating surfaces to reduce wear. A good silicone dry lube like the Spray # RM-747 will not attract and hold dirt like grease.
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  • Replacement Side Plates For Installing Demco Autoslide 5TH Wheel Hitch On a 2023 Ram 3500 Short Bed
    We do have the Demco Replacement Side Plates # DM99GV which you will be able to use on your 2023 Ram 3500. This will allow you to convert an above rail Demco Autoslide 5th Wheel Trailer Hitch 18K # DM8550034 or 21K # DM8550035, into the Ram 18K # DM69GV or 21K # DM89GV 5th wheel hitch.
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  • How to Convert a Demco AutoSlide 5th Wheel Hitch to Fit in the Ford Factory Puck System
    You don't need a rail adapter. To attach the Demco Autoslide 5th Wheel Trailer Hitch w/ Slider item # DM8550035 to your 2023 Ford F-350's puck system you will need the Underbed Mount Adapter Plates item # DM6033. I have attached a picture below so you can see the difference between a standard Hijacker and one that uses the Adapter Plates item # DM6033. These legs will drop right down into the bed of your F-350.
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  • Parts Needed To Install Demco Autoslide 21K Hitch In a 2024 Ford F-350
    Sorry Frank, I'm a little confused and think you may have put in the wrong number as I do not see anything coming up as a Demco 6170. If you are referring to the Head and Base Assembly # DM6107 then yes you will be able to install this into your 2024 Ford F-350. You will need either the Rail Kit # DM72GV along with the Side Plates # DM6003 if your truck did not come with the factory in bed connections. If you have the factory in bed mounting holes we have the Ford Side Plates # DM6033 that...
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  • Recommended Autosliding Hitch and 5th Wheel Rails for a 2023 Ram 2500
    Congrats on the new truck! To add a autoslider 5th wheel hitch you will first need to add a set of rails to your 2023 Ram 2500. There is no aftermarket way to add a puck system or below bed mounting method for an autoslider 5th wheel hitch. I recommend the Demco Premier Series Above-Bed Base Rails and Custom Installation Kit item # DM8552025-71. This set of rails is industry standard which means it will work with most 5th wheel hitches on the market. The brackets are custom fit and install...
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  • Lube Plate And Lifting Device Needed For B&W And Demco Fifth Wheel Hitches
    If you go with the B&W Companion OEM 5th Wheel Hitch w/ Slider for Chevy/GMC Towing Prep Package # BWRVK3770 you could use a lube plate like part # RP83002 to help prevent scratches to hitch head instead of using messy grease. if you go with the Demco Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550035 you wouldn't be able to use a lube plate. As for the lifting device, B&W has part # BWRVXA3130, which you lock into the jaws of the hitch and tie to a hoist to help lift the hitch up...
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  • Adapting Demco Autoslide 5TH Wheel Hitch To Fit Factory Prep/Puck Bed On a 2023 GMC Sierra 2500
    You have a couple options for moving your Demco Autoslide 5th Wheel Trailer Hitch # DM8550035 to your 2023 GMC Sierra 2500 with the factory in bed prep/puck system. First the best way in my opinion is to remove the mounting brackets on the side of your hitch and add the Side Plates # DM49GV. These will allow you to set the hitch into the factory mounts on your Sierra. The other option is using a Demco 5th Wheel Rail Adapter # DM6333 to act as an adapter between your bed mounts and your...
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  • How to Convert a 21K Demco Autoslide Hitch to Work w/ a 2024 GMC Sierra 3500 w/ the Puck System
    Welcome back! I took a look at you order history and the Demco 5th Wheel Rail Adapter item # DM6194 you bought back in 2019 does not fit the puck system in your new 2024 GMC Sierra 3500. GM changed the puck pattern starting in the 2020 model year. We've got two options to make the 21k Demco Autoslide item # DM8550035 you purchased fit in your new truck. The easiest way and the one I recommend is to change the side plates using the Replacement Side Plates for Demco Autoslide 5th Wheel...
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  • What is Needed For Demco Autoslide 5th Wheel HItch on 2022 Ford F-250 & Air Ride Pin Box
    Hey Bob, thanks for writing in, and let's start with the hitch for your 2022 Ford F-250. You made a superb choice going with the Demco, as the Autoslide is as good as it gets for a sliding hitch. There are options for both 18,000 lb capacity and 21,000 lb capacity, and I'll give you part numbers for both, as well as the custom base rail kit that fits your '22 F-250: - 18,000 lb Capacity: Demco Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550034 - 21,000 lb Capacity: Demco Autoslide...
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  • Recommended Adapter for a Demco Autoslide to Fit the Factory Puck System on a 2023 GMC Sierra 3500
    Yes, there is a way to make the 21k Demco Autoslide 5th Wheel Hitch item # DM8550035 work in your new GMC 3500 truck. You will want to use the Replacement Side Plates item # DM49GV. The puck pattern changed after the 2020 model year. These side plates will allow you to mount your Autoslider set up currently for the 2019 puck pattern inside your 2023 Sierra's pucks. The Demco Autoslide 5th Wheel Hitch w/ Slider item # DM29GV, you were looking at, is confirmed to fit the 2023 GMC Sierra...
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  • Side Plates Needed To Install Demco 21K Autoslide 5th Wheel Hitch In a 2023 GMC Sierra 3500 Puck Bed
    You would either need the Demco Autoslide 5th Wheel Hitch # DM29GV which already has the Side Plates # DM49GV. Or if you already have the Demco Autoslide 5th Wheel Trailer Hitch # DM8550035 you found you would need to add the Side Plates # DM49GV. These would fit either a 2023 or 2024 GMC Sierra 3500 with the factory Puck System. The Side Plates # DM6033 you mentioned are specific to Ford's puck systems.
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  • Parts Needed To Convert A Demco Autoslide 5th Wheel Hitch To A Below-Bed Mount
    Yes, you'll just need to order the correct underbed rails and new side mounting plates for the Demco Autoslide 5th Wheel Trailer Hitch # DM8550035. For a 2022 Chevy Silverado 2500 you'd need the Underbed Rail and Installation Kit for Demco UMS 5th Wheel # DR37FR. For the hitch you'd have to unbolt the side plates and swap on the Replacement Side Plates for Demco Autoslide 5th Wheel Trailer Hitches # DM6004. The levers will make connecting to the underbed rails quick and simple. I also...
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  • Why Did Demco Autoslide 5TH Wheel Hitch Move Back When Connected To Lippert Rhino Pin Box?
    I do see your Demco Autoslide 5th Wheel Trailer Hitch # DM8550035 is missing the Capture Plate # DM14743-95 and other components on the Head # DM6081. And as you have a Rhino pin box you need the Locking Plate # DM76FR as well to prevent the Demco from turning unless the trailer is turning. Since you don't have either of the parts on the head this is why your hitch slid back the way it did.
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  • Recommended Fifth Wheel Hitch For A 2018 Chevy Silverado 2500 With OEM Puck System
    Since you have the OEM puck system in the bed of your 2018 Chevy Silverado 2500 and you have a 6-1/2' bed I recommend going with a sliding 5th wheel hitch like the B&W Companion OEM 5th Wheel Hitch w/ Slider for Chevy/GMC Towing Prep Package # BWRVK3770. This will drop right into the pucks in your bed for a super easy peasy installation or removal. If you ever get in a tight spot and need the extra turning clearance you can switch the hitch into the rearward position to gain an extra 12"...
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  • Demco Hijacker Autoslide 5th Wheel Hitch ofr 2019 Ram with OEM Tow/Prep Package
    The # DM6107 Replacement Head and Base Assembly is missing the necessary side plates needed to attach to the # DM6099 OEM puck adapters. The complete hitch is part # DM8550035. You'd also need the # DM6099 or the # DM6194 adapter that will allow the hitch to attach to the in-bed puck system. If you don't already have the 7-way trailer connector in your truck bed, you can install one using part # DM8555002. I've linked you to install/product demonstration videos as well as installation...
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  • Parts Needed To Install Demco Autoslide 5TH Wheel Hitch In 2023 Chevy Silverado 2500 Factory Puck
    We have both the 18K # DM79GV and 21K # DM29GV Demco Autoslide 5th Wheel Hitches which will fit into the factory puck system on your 2023 Chevrolet Silverado 2500. We also have the Replacement Side Plates # DM49GV which will bolt onto either the 18K # DM8550034 or 21K # DM8550035 hitches which were designed to fit above bed rails if you already have a hitch from a previous truck. This will save you from having to use an Adapter # DM6333.
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  • Can Demco Hijacker Auto Slide Hitches be Used with Rota Flex Pin Boxes
    I spoke with my contact at Demco about the locking plates and the HiJacker autosliding 5th wheel hitch # DM8550035 requires the use of the capture plate part # DM6171.
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  • Demco Hijacker Autoslide Capture Plates and Locking Plates for Pin Box Model Compatibility
    There are some king pin models that require a specific capture plate or adapter for use with the Demco Hijacker Autoslide 5th wheel hitches. Here is a list: Demco Hijacker Autoslide Capture Plates for Trailair Rota-Flex Pin Boxes # DM6171 Demco Hijacker Autoslide Locking Plate for MOR/ryde Pin Boxes # DM6025 Demco Hijacker Autoslide Locking Plate for Demco Glide Ride Pin Boxes # DM6036 Demco Hijacker Autoslide Locking Plate for Trailair Tri-Glide Pin Boxes # DM6095 Demco Hijacker Autoslide...
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  • Recommended Autosliding Hitch For 2014 Chevy Silverado 2500 HD With 6-1/2 Foot Bed
    For your 2014 Chevy Silverado 2500, we do not have an autosliding hitch option compatible with your B&W gooseneck # BWGNRK1012. For a manual slider that is compatible with your system, I recommend the B&W Companion 5th Wheel Trailer Hitch w/ Slider - Dual Jaw - 20,000 lbs # BWRVK3400-5W. This is a very nice hitch, but it is not an autoslider. For an autosliding hitch, you will need to remove your B&W underbed gooseneck hitch because it mounts in the same locations and the rails for the...
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  • Hitch Head Height of Demco Hijacker Autoslide 5th Wheel Hitch On 2021 GMC Sierra 3500 with Pucks
    In order to use the Demco Hijacker Autoslide 5th Wheel Trailer Hitch part # DM8550035 on a 2021 GMC Sierra 3500 6-3/4 Foot Bed with OEM Prep Pkg you'll also need the Demco 5th Wheel Rail Adapter for Chevy/GMC OEM 5th Wheel Towing Prep Package part # DM6333. The hitch head height of the Demco Hijacker is 15-1/4", 16-1/2", and 18" but you'll need to add 2" while using the adapter to each of these. I do have an option for you to get the trailer level but you won't likely find a fifth wheel...
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  • Should I Grease Demco Hijacker Autoslide Locking Plate for MOR/ryde Pin Boxes
    Since a lube plate will not fit with the Demco Hijacker Autoslide Locking Plate for MOR/ryde Pin Boxes part # DM6025 when you use the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider part # DM8550035 you will want to grease the top plate surface of your Hijacker with a thin layer of grease. I recommend the UltraLube LMX # L11390 or # L11312 grease.
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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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  • Is The Demco Autoslide 5th Wheel Trailer Hitch Worth The Investment?
    The main issue most people have with connecting to a 5th wheel using the Demco Autoslide 5th Wheel Trailer Hitch 18K # DM8550034 or 21K # DM8550035 is the hitch needs to be connected and disconnected in a straight line. This is necessary since the head of the Demco will slide to the forward straight position if pushed. Depending on where the 5th wheel trailer is parked this can often be difficult. Of the reviews we have received the largest complaint is the weight of the hitch. 277lbs for...
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  • Best Fifth Wheel Hitch for 2019 Nissan Titan XD Short Bed With Factory Gooseneck
    The best fifth wheel hitch for your 2019 Nissan Titan XD short bed with the factory gooseneck is the Demco Hijacker Autoslide because unlike other sliding fifth wheel hitches, the Hijacker does not require you to leave your Nissan's cab just to make a sharp turn. That type of convenience alone makes the Hijacker a great option, but what truly makes it the best hitch for you is that it also has a premier jaw system and cushioned head which means you get the most comfortable ride possible...
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Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B

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