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Demco UMS Double Pivot 5th Wheel Trailer Hitch - Single Jaw - Underbed - 21,000 lbs
(55 reviews)
Price: $1,030.95
In Stock
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Demco UMS Double Pivot 5th Wheel Trailer Hitch - Single Jaw - Underbed - 21,000 lbs
Part Number: DM8550032
In Stock
$1,030.95
Retail:$1,302.00
You Save: $271.05
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- All Info
- Reviews (55)
- Q & A (0)
- Photos
Demco 5th Wheel Hitch - DM8550032
- 21000 lbs GTW
- Aftermarket Below Bed Rails
- Fixed 5th Wheel
- Demco
- Premium - Single-Hook Jaw
- 16 - 19 Inch Tall
- Double Pivot
- 5250 lbs Vertical Load
This 5th-wheel hitch has a sturdy wraparound jaw with a locking bar for added security. Pivoting head allows easy hookup and helps to limit chucking. Polyurethane bumpers provide cushion for a smooth ride. Hitch removes for full bed access.
Features:
- 5th-Wheel hitch mounts in your truck bed so you can tow your 5th-wheel trailer
- 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 head eases hookup and helps to limit chucking
- Pivots front to back and side to side
- Cushioning polyurethane dampeners help reduce noise and absorb road shock
- 4 Height settings to fit your application
- 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 corrosion-resistant powder coat finish
- Custom underbed mounting kit (sold separately) required for installation
- Made in the USA
Specs:
- Gross towing weight: 21,000 lbs
- Vertical load limit: 5,250 lbs
- Hitch height: 16" - 19"
- 5-Year limited warranty
Secure Wraparound Jaw with 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 UMS hitch offers tighter tolerances around the king pin, which minimizes both rattle and chucking, for a smooth, quiet ride.
A 3/4" thick 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 hookup 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 and Simple Removal for Full Bed Access
The UMS Series hitch is specially designed to fit a Demco UMS custom underbed mounting kit (sold separately). To assemble the hitch, 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 the receivers in your truck bed, 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 UMS receivers in your truck bed. Turn the handles to lock the feet into the receivers 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.
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Installation Details
Alternate Instructions
Ratings & Reviews
4.7
55 reviews
by:
Don D.
04/11/2017
Having owned and used the 2005 predecessor to this hitch, I can say it's done well for us. I am hoping that this new clamshell design will make connecting to our 5th wheel toy hauler even easier. We've never invested in a hitch cover for the old one and only travel about 5 times per year. The hitch is always in the weather. We plan on covering this one as the rain washes away vital lubrication and the sun evaporates said same. This has made operating the old slide bar type hitchhiker a pain from time to time. I was disappointed in the packaging for shipment. There were three separate cardboard boxes, two of which had parts either penetrating out through the sides or in the one case, a bag of bolts falling out upon delivery. I would have liked to see better operating instructions included in the box. There are parts lists and schematics for each of the separate assemblies, but nothing aside from the stickers on the hitch on how to properly use and maintain the hitch.
by:
Rick
11/18/2018
First, thanks to Christina for the service and information re hitches and selection.Ok now for the complaints..... they are few. THE instructions are poor at best and the description details are misleading. They state no drilling required other than the truck bed. While I am sure this is true for 2010 trucks and newer, not so for my2007 F350. Not stated in the description is the fact that older trucks require 4, 1\2 inch holes need to be drilled in the truck frame rails. No big deal but be prepared to drill them if your truck is an older mod. Ford.
Came in four boxes, each with its own set of instructions... What I was looking for was a Start Here point. That didn't exist so it was guess work for a starting point. Referring back and forth to different sections for what to do.
Once I got past the slight confusion ,assembly and install was pretty easy.
Took about 4 hours start to finish. Haven' towed with it yet..... that happens later to day.
Good stuff. The hitch is well made and Quality seems to be outstanding. It works just as expected easy to place the hitch in the truck and comes out easily too nice clean bed after removal.
If it weren't for the instructions this would be 5 star rating.
Came in four boxes, each with its own set of instructions... What I was looking for was a Start Here point. That didn't exist so it was guess work for a starting point. Referring back and forth to different sections for what to do.
Once I got past the slight confusion ,assembly and install was pretty easy.
Took about 4 hours start to finish. Haven' towed with it yet..... that happens later to day.
Good stuff. The hitch is well made and Quality seems to be outstanding. It works just as expected easy to place the hitch in the truck and comes out easily too nice clean bed after removal.
If it weren't for the instructions this would be 5 star rating.
by:
Phillip Zabst
07/17/2016
Our Demco hitch installed with out issues. We didn't use it till the last of May, then we pulled over 3000 miles. the only issue we had was un-hitching with hitch & 5th wheel in a semi-bind, NOT the hitches fault. Totally satisfied with the unit.
We have had Demco tow bars for years before our 5th wheel, so we were not surprised at the quatity of our hitch, only complaint would be better prep before painting/coating unit. thank you Phil Z
We have had Demco tow bars for years before our 5th wheel, so we were not surprised at the quatity of our hitch, only complaint would be better prep before painting/coating unit. thank you Phil Z
Phillip Z.
7/17/2017
After a year, my only complaint is still paintcoating.
by:
Guy
11/03/2018
Great unit and help from etrailer. We sold the 5th wheel that had a sidewinder hitch on it. We are buying a 2017 Keystone Cougar RLSWE now. Will this Demco work on it?
Thanks
Thanks
Mike L.
11/5/2018
The Demco Hijacker is compatible with any standard pinbox, and should work well with your new fifth wheel.
by:
EY
06/01/2019
No chucking at all, easy assembly and maintenance. Drops in and out of the brackets easily and the latching handles double as carry handles. Weights a lot, and comes in multiple boxes, so be sure to tip your UPS guy!
The bolts are all grade-5 hardware and torque should be standard based on diameter.
The bolts are all grade-5 hardware and torque should be standard based on diameter.
by:
Edward
02/08/2022
Not to difficult to install. It will require 2 people to get the bolts torqued down. Handles a 14000 lb fifth wheel with ease
by:
Dana
06/10/2018
Hitch appears to be well-constructed and sturdy. I have not yet installed it. Some assembly is required, and the instructions aren't crystal clear. Better illustrations would be helpful. The videos online are the best source of installation information. Shipping materials lack protection. The powder coating was damaged in a few locations, as well as the instructions. I expect the hitch will operate exactly as designed a long as I protect the exposed parts from the inevitable elements. Rubber grommets would be a nice addition to the holes drilled in the truck bed.
Dana F.
6/11/2019
Hitch is a bit tough to remove and install, so I recommend getting it exactly right the first time. It should not require persuasion to put it in place. Keeping the plugs in place helps ensure crud doesnt invade and cause issues. Other than that, it pulls the load every bit as advertised.
by:
Mark
12/03/2021
My son and I installed it, Works great! Thanks
by:
Temur
11/22/2019
Very easy to install!
by:
Larry
08/16/2021
by:
Ludwig
01/03/2022
by:
Richard
10/05/2026
The assembly was quick and easy since it comes mostly assembled. Also, helpful that I have 2 torque wrenches and two 3/4 deep sockets. Nice that you can pull the pin out & remove the head when you take it out. The only problem I’ve had is it’s a little tight putting it back in the pucks. I had to loosen a couple bolts to get it back in. This is definitely manageable for one person to take in and out. Delivery was very fast (3 days) and I had it in about an hour after it arrived. I like the security Demco wrap around jaw with the lock bar and the functionality of the double pivot head with the bumpers. Also, you can’t beat the price on these. The 4 height options is more than most and another reason I picked this hitch.
Robin H.
10/7/2026
Thanks for the detailed review! Glad to hear the installation went smoothly and you're happy with the features of the Demco hitch. Being able to remove the head separately definitely makes getting it in and out of the truck more manageable.
by:
Cody
03/20/2026
Looks like a great hitch, just put together and it fits great.
Gwendolyn Y.
3/26/2026
Looks great, Cody. Where are you headed to first?
by:
Michael
04/21/2026
It seems like a good hitch we still have snow up here so I have too wait to try it out.everything fit perfect. I think I will be very happy with it, and it was at a good price as far as I’m concerned. If someone is thinking about getting one just remember you need a torque wrench.
by:
Johnny
02/01/2026
I am HAPPY 5TH Wheel
by:
Laura
05/10/2021
This hitch did amazing with a trailer move i preformed over the weekend..Demco products are highly recommended.
by:
John
08/02/2025
This is one of the best fith weel hitches that I have had and I used about all of of them thanks for thanks for asking
by:
James
03/31/2025
The Demo hitch arrived first, all good, nice heavy duty boxes, I assembled it with no issues, can't wait to use it.
The Hydrastar disc brake kit however arrived a couple days later in a beat up torn box barely held together. The parts in the big box were also boxed sort of, they were all broken and torn up. Fortunately the parts weren't broken.I have never seen heavy items with such flimsy packaging. I assume hydrastar boxed it all up. I am giving 5 stars because Etrailer has great customer service, and helped me over the phone to make sure I was order the correct items for my rig.
The Hydrastar disc brake kit however arrived a couple days later in a beat up torn box barely held together. The parts in the big box were also boxed sort of, they were all broken and torn up. Fortunately the parts weren't broken.I have never seen heavy items with such flimsy packaging. I assume hydrastar boxed it all up. I am giving 5 stars because Etrailer has great customer service, and helped me over the phone to make sure I was order the correct items for my rig.
by:
Leslie P.
02/27/2016
The safety features of this hitch were exactly what my husband was looking for. We have a 2016 F 350 with the factory cutouts and this dropped right in and locked in with no problems. You do have to put this together which is fairly simple. The only complaint I had was throughout shipping, there were holes ripped all throughout the boxes. One of which was the one that had the nut's bolt's and washers in it and they weren't sealed in the bag that they came in so, we didn't have all of them. Many were lost but they were easily replaced at the local parts store.
We haven't towed with it yet but everything should be typical with that.
We haven't towed with it yet but everything should be typical with that.
Leslie P.
2/26/2017
Still very satisfied with the fifth wheel. Weve towed our 42ft fifth wheel with it several times without any problems with the hitch. Hopkins up and unhooking with no problems at all. We would highly recommend this product.
by:
Troy
09/14/2018
Very simple install. Very well built unit. Had to remove 1 shim on 3 of the feet because the handles were way too tight. Had ro use a rubber mallet to turn them at first. After removing the shims, it is perfect. I purchased a small master lock to replace one of the cotter pins for the safety pins so that noone steals the hitch. No noise while driving with just the hitch installed at all. I have not had a chance to tow anything as of yet--- pick up my 40' 5er wed!
Seems to be a very well made, good looking, compact hitch. This was installed in a 2018 F350 long bed dually woth the oem under bed puck system.
Seems to be a very well made, good looking, compact hitch. This was installed in a 2018 F350 long bed dually woth the oem under bed puck system.
Troy
9/14/2019
Fantastic after a full year of use. 5er weighs 16k and no lurching. Also very nice when parking on an un level surface... Just hook up and go! I have done 9 trips with about 5k total miles so far. It is very easy to remove-even after back surgery. Highly recommend.
by:
Fred
08/21/2025
Hitch went together smoothly and fit into the factory bed holes perfectly.Rides nice on the initial test drive.Demco could make their packaging more durable. the paint was rubbed off in one area and the box was on it's way to destruction. let's face it, this is some heavy stuff to ship around.
by:
Jesse
02/13/2019
This is better than I thought it would be. It came in three boxes and you have to put it together but the instructions are easy to follow. It is totally height adjustable so you don’t have to worry about whether it will be too short or too tall for your truck bed.
Second product I bought from etrailer with no complaints.
Second product I bought from etrailer with no complaints.
Jesse
2/17/2020
One year down and I am going strong with several more in the future! I have no complaints with this hitch. I recommend it to everyone that asks about it. Thanks again.
by:
Eric M
02/27/2017
Hitch is nice and makes me feel more comfortable being a more novice RV'er with the large steel bar that acts as a secondary safety, unlike one of the other big brands that just has teeth that close around the pin. Assembly took a couple hours of blood and sweat even though it really is very easy.... You have to make time to torque about 20 or so bolts, but that's pretty typical of anything you plan to drop up to 21k pounds on and jerk around all over the country. Install into/out of the truck bed is now a 5 minute project thanks to a block and tackle in the garage ceiling. Extremely easy to put in or remove as long as you have an overhead weight bearing device of some sort. Beyond my experience with dragging a 17k pound RV with it, the mfgr is VERY responsive if you call for help. I was missing 1 washer upon assembly and the sticker decal was damaged in shipping but the MFGR had new ones in my mailbox in 2 days at no charge. They are also VERY good on tech support. The only caution I have on this is make 100% sure you know what grade bolts you have and what you should torque them to. Novice mistake: I rated the bolts based on the chart in the instruction guide but I rated on head size, not the diameter and thus I over-torqued. Luckily I did not have the means to torque to the actual higher spec or I would have snapped them at 250ft-lbs. If you have any questions on correct torque, call the mfgr and as for tech support! As for usage experience: Carry a long stick with you. We end up on crooked camping sites frequently and the only issue is that while this hitch moves ALOT to accommodate, sometimes you may get up under the pin-box and you just can't get the hitch to snap shut. Having a long stick on-board will let you push on the spring-loaded part and cause it to snap closed. One last thing from experience: lube, lube, lube. Keep the thing lubed as per the manual and do not be stingy with it on the parts that slide and grab your king-pin. It helps out drastically in getting it to snap closed on the 1st try. As for lubing the top plate, everyone is using those plastic lube discs these days. They work fine BUT: They WILL cause you a bit of grief in getting the pin exactly where it needs to be to snap closed on occasion. The hitch has enough wiggle room to accomodate them but it is not 'designed' for it, so once you're 1/4" higher out of the hole than spec, sometimes you will have to play with it to get it shut. If you ever find yourself just TOTALLY unable to get it to close on the pin, put your jacks back down and pull out from under your trailer. I totally destroyed one of those plastic discs a week ago and spent 40 minutes fighting and cussing at the thing b/c it wouldn't close on my pin far enough to put the safety pin in the handle... I finally yanked the hitch out from under the trailer and I had caught the lube disc at an angle on the 1st try and it had ripped a gash in in. That extra misplaced material up under there was preventing me from being able to secure the pin. Aggravating: Yes. But I kinda like it. You will KNOW that there is an issue with your current hitching job with this thing. It can be unforgiving at times but when I have $80k of truck and $110k of RV depending on it, I'd rather it be unforgiving and tell me in a loud voice: "You screwed up your mount attempt, try again" than to get to the end of an entrance ramp and have the trailer come down on the truck bed. If I had to buy one again, I'd buy the same one.
by:
mike
04/25/2019
This hitch assembled quickly and installs easily. Many thousands of miles and zero issues. I would highly recommend ths hitch. Mush smoother and problem free than my prior hitch.
Mike
4/26/2020
Product still works great. Been almost 2 years and many thousands of miles. Product still looks great as well. Great job Demco.
by:
Tom
03/04/2021
Other than the logo sticker being upside down the hitch is great. Demco is sending a new one. No problem to assemble and install. Regarding etrailer.com, what rating is above excellent? Pat C in customer support went above and beyond to address any issues and was always ready to answer any questions.
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view full answer... - 5th Wheel Trailer Hitches for a 2018 Ford F-250 4x4 Both with and without Factory Prep PackageOn your 2018 Ford F-250 4x4 look in the bed. If you see the 4 pucks in the bed like in the picture I have included then you do have the factory 5th wheel prep package. If you just see the indentations where the pucks would be then you do not have the prep package. If you do have those pucks then you can use a hitch that mounts directly in them. For a long bed truck you can use the following: # BWRVK3305 # C16036 # RP30922 # DM8550033 If you have the prep package and a short bed truck...
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- Towing a 5th Wheel Trailer with Factory Gooseneck Hitch in a 2006 Ford F-350I don't know who made the OEM gooseneck hitch for Ford in 2006 but you will be able to tow a 5th wheel trailer without having to add a different hitch. There are adapters that you can use instead. For example one of the more popular options is the Anderson Ranch Hitch, # AM3100. I have linked a video review of this adapter for you. Another option is to use a Reese Goose Box. There are a few different ones available and they fit specific 5th wheel trailer pin boxes: # RP85FR fits Lippert...
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- Underbed Fixed Fifth Wheel Hitch for Short Bed 2020 Chevy Silverado 2500 w/o OEM Rail KitSince you have a Turning Point pin box you can't use the Companion hitch # BWRK3500 since it attaches through the center of the hitch to the gooseneck rail kit. The twisting torque of the Turning Point will damage the hitch as that style of pin box requires the hitch to attach in the four corners of the hitch like standard hitches. So for an underbed solution your best and only option is the Underbed Rail Kit from Demco part # DR37FR which is custom fit for your truck and the fixed hitch...
view full answer... - 5th Wheel Hitch for 2013 Ram 3500 Dually That Allows a Clear Truck Bed When Not TowingThe highest-rated 5th wheel hitch fit for your 2013 Ram 3500 dually long bed that will use below-bed installation rails (that let you keep your bed clear when you need to haul cargo) is the 21K Demco hitch # DM8550032 that installs in below-bed rail kit # DM8551006. If you have a 6-foot bed then the highest-rated compatible slider hitch is the 21K Demco Hijacker Autoslide # DM8550037 that mounts in the same below-bed rail kit. For an in-bed wiring harness you can use # DM8555002. If you...
view full answer... - Recommended 5th Wheel Hitch and Rear Suspension Enhancements for a 1999 Ford F-350For a 5th wheel hitch compatible with your 1999 Ford F-350 I recommend going with the Demco Hijacker UMS Double Pivot 5th Wheel Trailer Hitch part # DM8550032 in addition to the Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches part # DM8551000. The Demco Hijacker is an excellent 5th wheel hitch rated for weight capacities up to 21,000 lbs. The rail free designed allows for full access to truck bed when the hitch is removed. The wraparound...
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Info for this part was:
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Don D.
4/12/2018
The hitch functions great but the finish is peeling off in places.