Underbed Rail and Installation Kit for Demco UMS 5th Wheel and Gooseneck Trailer Hitches
(14 reviews)
Price: $484.30
In Stock
Underbed Rail and Installation Kit for Demco UMS 5th Wheel and Gooseneck Trailer Hitches
Item # DM8551010
Retail:$726.98
Our Price: $484.30
You Save: $242.68
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- All Info
- Reviews (14)
- Q & A (0)
- Photos
2016 GMC Sierra 2500 - Underbed Rail and Installation Kit for Demco UMS 5th Wheel and Gooseneck Trailer Hitches
- Below the Bed
- Demco
- Custom
Custom, underbed rail kit allows for uninhibited use of your truck bed once your hitch is removed. Works with Underbed Mount Series (UMS) fifth-wheel and gooseneck hitches. No-drill frame brackets offer a simple installation.
Features:
- Installation kit is designed for use with Demco UMS 5th-wheel and gooseneck trailer hitches
- Underbed rails allow for complete access to truck bed when hitch is removed
- No exposed rails
- 4 Mounting holes sit flush with truck bed
- Vehicle-specific design reduces installation time and requires less drilling than universal systems
- No-drill brackets bolt onto the outside of your truck's frame rails
- Crossmembers sit along top of frame rails, beneath bed
- Sturdy, black powder coated steel resists corrosion
- Rails and installation hardware included
- Made in the USA
Specs:
- Application: Demco Underbed Mount Series (UMS) 5th-wheel and gooseneck trailer hitches
- 5-Year limited warranty
8551010 Demco Hijacker UMS Under Bed Rail Frame Bracket Kit
Replaces Demco DM8551002 and DM8551003
Installation Details
Customer Satisfaction Score:
93% were satisfied with this product
7% of customers were not satisfied
- Wrong item was ordered
- Package not accepted
- Product did not meet expectations
Customer Reviews
Underbed Rail and Installation Kit for Demco UMS 5th Wheel and Gooseneck Trailer Hitches - DM8551010
Average Customer Rating: 3.9 out of 5 stars (14 Customer Reviews)
Custom, underbed rail kit allows for uninhibited use of your truck bed once your hitch is removed. Works with Underbed Mount Series (UMS) fifth-wheel and gooseneck hitches. No-drill frame brackets offer a simple installation.by: David S.01/03/2020
The instructions provided with the hitch were very detailed and provided enough information for me to install it myself. I love having the mounting rails below the bed. the auto slide worked flawlessly. For the winter I left the hitch coupled with the trailer to keep my bed clear.
by: Myron09/17/2018
Merchandise arrived in good condition. Nothing missing. The shipping carton was in terrible condition. It was torn open from shipping, however nothing was missing or damaged . The product will fill my needs to replace the above bed rails that don't leave a clean bed when fifth wheel is removed. This will fill the bill. Thanks to Etrailer this will work perfectly for my Demco hijacker fifth wheel. Shipment was quick delivery.
by: Kirk C.07/25/2019
Kit made for my rig and fit as described. Installation a little on the difficult side for your typical DIY'er.
by: Jeffrey10/15/2018
2018 Chevrolet Silverado 3500
Once I mounted everything and figured out I had to switch passenger and drivers brackets everything was fine it worked out ok
by: Mike06/26/2018
2017 GMC Sierra 2500
First package was destroyed in shipping, all hardware was missing, called etrailer forgot her name ( sorry ) very polite. she ordered all the correct hardware needed and had it shipped out. Except for the shipping was very pleased with etrailer.
by: Gary08/15/2021
This product is nice but doesn’t line up with OEM placement of pucks.
Sierra K.
8/23/2021
That is because this product only fits vehicles without The OEM Prep Package. You want something like this: Item # DM6194.
by: Michael 09/03/2021
2012 Chevrolet Silverado
by: Todd10/31/2022
by: Donald05/09/2019
It arrived in two days. Great delivery.
by: Dennis03/19/2022
by: Eric10/04/2022
by: Todd 08/13/2021
by: James 08/12/2021
by: John03/08/2021
14
14
See what our Experts say about this Demco Fifth Wheel Installation Kit
- Are There Replacement Brackets For DM8551010The brackets and hardware are not available as separate purchases, so you would need to get the full kit, which is the Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches # DM8551010. I have added a link below to a video install for you to check out as well if you'd like to take a look.
view full answer... - Are there Covers for the Holes in Underbed Rail and Installation Kit # DM8551010There are no covers for the holes for the Underbed Rail and Installation Kit # DM8551010. That means that it is possible for debris to get in the holes. If that happens and it affects the fit of the hitch then I recommend using compressed air to clear out the debris.
view full answer... - 5th Wheel Hitch Recommendation For 2017 Chevy Silverado Short BedYou will want to install a below bed rail style of fifth wheel rail kit in your 2017 Chevy Silverado 2500 short bed since you want truck bed access when not towing. I really like the Demco Hijacker setup that uses the under bed rails part # DM8551002 which are custom fit for your truck. Then since you need a slider hitch to make tight turns you would want the Demco Hijacker Autoslide part # DM8550022 which will slide as you make tight turns.
view full answer... - Recommended 5th Wheel Hitch And Underbed Rail Kit Compatible With Revolution On 2012 GMC Sierra 2500There is only one underbed rail and hitch system we carry that is compatible with your 2012 GMC Sierra 2500 and a Revolution pin box. My recommendation is the Demco Hijacker UMS Double Pivot 5th Wheel Trailer Hitch - Single Jaw - Underbed - 21,000 lbs, # DM8550032 and the Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches, # DM8551010. This system will give you a rail free design that will allow full access to your truck bed then hitch is...
view full answer... - Install Instructions for Demco Fifth Wheel Rail Kit # DM8551002If you check out the video I attached below you'll see an install we did for the Demco rail kit part # DM8551010 on a 2016 Chevy Silverado 2500HD just like yours. This will walk you through the entire process and will be more helpful than the written instructions.
view full answer... - Best Fifth Wheel Hitch Recommendation for 2017 Chevrolet Silverado 3500 Short BedFor your 2017 Chevy Silverado 3500 with a 6-1/2 foot bed the best fifth wheel hitch setup we have is the Demco Hijacker Auto Slide part # DM8550037. Since you have a short bed truck you have to have a slider hitch to allow you to make tight turns. Since most slider hitches make you get out and manually operate them the benefit to the Demco is that it does this automatically as you turn saving you the hassle. Then for a rail kit you'd want the part # DM8551010 which is a custom fit underbed...
view full answer... - Gooseneck Adapter that Fits Demco UMS Underbed Rail Kit of GMC SierraFor the UMS underbed fifth wheel rail kit you have installed in your 2015 GMC Sierra 2500 all you'd need is the part # DM5988 and you'd be set.
view full answer... - Do 16k and 20k Fifth Wheel Hitches Connect to Same Size King PinAll of the fifth wheel hitches we carry are designed to fit the same size king pin on a trailer. A 16k hitch would work just as well to connect to a fifth wheel trailer as a 20k fifth wheel hitch. I attached a link to a page that has all of the 20k fifth wheel hitches we offer.
view full answer... - Is Demco Hijacker Autoslide Hitch Solid Hitch for 2015 Chevy Silverado 2500HD Short BedThe Demco Hijacker Autoslide part # DM8550034 is a really great, solid hitch that makes towing a fifth wheel trailer with a short bed truck much easier since you don't have to get out and operate the slider mechanism. To install it in your 2015 Chevy Silverado 2500 short bed would only require you to install the Demco rail kit part # DM8551010 and you'd be set.
view full answer... - Weight of Demco Hijacker Autoslide 5th Wheel Hitch Underbed Mount for 2016 GMC Sierra 2500The Demco Hijacker Autoslide 5th Wheel Trailer Hitch with Slider - Underbed Mount # DM8550022 has a shipping weight of 300 lbs, so when you subtract its shipping material it comes in at approximately 290 lbs. This hitch is a fit for your 2016 GMC Sierra 2500 when mounted in the Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches # DM8551010. I have added a link to an installation video of those rails in an '18 Sierra 2500 for you to check...
view full answer... - Underbed Fifth Wheel Hitch and Rail Kit Recommendation for 2016 GMC Sierra 2500 Short BedFor your 2017 GMC Sierra 2500 short bed we do have fifth wheel hitch rail kits that are underbed which would be very similar to the factory GM rail kit. My favorite option to recommend is the Demco rail kit part # DM8551010. The reason this rail kit is great is that it's underbed like you said you needed but also because it allows you to install a sliding hitch that slides automatically as you make tight turns. For that you'd want the part # DM8550022.
view full answer... - Installation of UMS Demco 18K Auto Slide Base Rails on a 2015 GMC 2500 Sierra Diesel Crew CabI took a look at the directions and they are straight forward and provide clear diagrams. According to them there may be the need to trim the heat shield on some models but they provide another excellent diagram showing exactly where to trim if this is needed for your truck. I have linked a few images for you to check out. They also recommend lifting the trucks rear end for better access to install base rails. The manufacturer does offer two methods of install based on your situation. Estimated...
view full answer...
- Recommended Sliding 5th Wheel Hitch for 2019 GMC Sierra 2500 Duramax I recommend using the Demco Hijacker Autoslide # DM8550037, which has a 21,000-lbs capacity and can be adjusted between 15-1/2 - 18-1/4 inches tall. This is an automatic sliding hitch, so there won't be any need to get in and out of the vehicle each time you need to perform a tight turn that might otherwise have your trailer getting a little too close for comfort to the truck cab. You will need to use the custom installation kit # DM8551010 to provide you with the mounting rails for the...
view full answer... - Auto Sliding Fifth Wheel Hitch for 2017 Chevy Silverado 2500 Short Bed without OEM Rail KitWe don't carry the Pullrite brand of hitches but we do offer an auto sliding hitch setup that will work just as good if not better than the Pullrites which aren't height adjustable. The Demco Hijacker AutoSlide part # DM8550037 is a really great auto sliding hitch that is a little easier to install and use than the Pullrite too since it doesn't require a capture plate. It also has a 21k trailer towing capacity. This installs in an underbed rail kit for your truck with part # DM8551010...
view full answer... - 18k Slider Hitch Recommendation for 2020 Ram 3500 with OEM Rail KitIf you are going to be over the towing capacity of your fifth wheel hitch it would time to replace it with a higher rated one. You may have gotten away with it in the past and can't see any obvious signs of fatigue or stress but that doesn't mean you'd always be able to get away with. Since you need a slider hitch due to having a short bed truck one really great solution is an automatic sliding hitch like the Demco Hijacker part # DM8550034. As you go to make tight turns this will slide...
view full answer... - What Does Demco Hijacker Autoslide and Rail Kit for 2019 Chevy Silverado 3500 WeighThe combined weight of the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Underbed # DM8550022 and the rail kit part # DM8551010 that fits your 2019 Chevy Silverado 3500 short bed is 374 lbs. You should note that this does not count against your payload as that is the weight capacity of the truck bed whereas this attaches to the truck frame directly for supporting the weight.
view full answer... - Auto Sliding Fifth Wheel Hitch For 2022 GMC Sierra 2500 with OEM Prep PackageFor an auto slider fifth wheel hitch that fits the OEM prep package of your 2022 GMC Sierra 2500 short bed you'd want the Demco Hijacker Autoslide part # DM8550034 with the GM rail kit adapter part # DM6333 and you'd be set. This has the 18k capacity you mentioned wanting as well. Unlike other hitch options this has an adjustable height head which will help level your trailer when towing.
view full answer... - Parts Needed To Install Demco Hijacker Autoslide With Underbed Rails On 2017 Silverado 2500 DieselI definitely understand how the above bed rails can get in the way when your Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550034 is removed. There is a way to convert your Hijacker # DM8550034 to underbed rails but you will need to install the Underbed Rail and Installation Kit for Demco Hijacker # DM8551010 and remove your current above bed rail system. You can then use Replacement Side Plates for Demco Hijacker Autoslide 5th Wheel Trailer Hitches # DM6004 to allow...
view full answer... - Demco Hijacker Autoslide Underbed Fifth Wheel Trailer Hitch on 2016 GMC Sierra 2500For your 2016 GMC Sierra 2500 with a 6-1/2 foot bed the Demco Hijacker Autoslide # DM8550022 is the underbed fifth wheel hitch you'll want. It installs with the Custom Underbed Rail and Installation Kit # DM8551010. The Hijacker is an autoslide that will travel up to 14 inches. With many sliding hitches you need to get out of your truck to adjust the slider, make your turn, and then adjust it back to continue towing. With the Hijacker it will automatically slide when you're making your...
view full answer... - Gooseneck Hitch Adapter Recommendation for the Demco Fifth Wheel UMS Rail Kit DM8551010The Demco Rail Kit part # DM8551010 that you referenced is a confirmed fit for your 2015 GMC Sierra 2500 Short Bed. The gooseneck hitch adapter you would need to go with this rail kit is the part # DM5988.
view full answer... - Recommended 5th Wheel Hitch for 2019 Chevy 2500HD Short Bed without OEM PucksI recommend using the Demco Hijacker Autoslide # DM8550034 on your 2019 Chevy 2500 without the OEM prep package since the slider automatically activates, so there's no getting out of the vehicle required each time you may need to make a tight turn. I also really like that this gives you an under-bed mounting kit with the # DM8551010 so you'll still have a completely clear truck bed when you're not towing your 5th wheel. This hitch has an 18,000-lbs capacity but if you're in need of a larger...
view full answer... - Recommended Demco Hijacker Autoslide Compatible with 2012 GMC Sierra and 2021 GMC SierraI have a solution for you, but Demco does not make a hitch that will drop directly into the pucks on a GMC truck, so you would have to use an adapter on the new truck. For the hitch, you can use the Demco Hijacker Autoslide # DM8550035; this hitch has a 21k capacity and will fit into industry standard base rails or the adapter mentioned below. I think it's always a good bet to go up to a higher capacity if there's a chance that you might end up with a trailer that's higher weight; so if...
view full answer... - Demco Underbed Rail System Dimensions for a 2016 GMC Sierra 2500Thanks for the picture! Those holes are not from an OEM puck system because the cab to tailgate dimensions are too short. It looks like the previous owner used the Underbed Rail and Installation Kit for Demco UMS 5th Wheel Hitches item # DM8551010. This system worked similar to an OEM puck system but only with Demco hitches. I have linked a dimensional drawing below for you to compare to what is currently on your truck. I have also attached an installation video. Since your 2016 GMC Sierra...
view full answer...
- Will Demco Hijacker Autoslide Work With B&W Turnovernall On 2016 GMC Sierra 2500The Demco Hijacker Autoslide 5th Wheel Trailer Hitch won't work with a B&W Turnovernall Gooseneck Trailer Hitch. The issue is not that they don't offer a way to attach the two but rather that the singular connection point cannot withstand the stress of an auto-sliding fifth wheel hitch. Therefore, you can either use the B&W Companion Slider Gooseneck-to-5th-Wheel Trailer Hitch Adapter part # BWRVK3400 or remove the B&W Turnovernall Gooseneck Trailer Hitch and install the Underbed Rail...
view full answer...
Do you have a question about this Fifth Wheel Installation Kit?
Info for this part was:
Test Fit:
Joe V
Test Fit:
David F
Edited by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Joshua S
Video Edited:
Jacob T
Video by:
Dustin K
Written by:
Kristina F
Updated by:
Noah M
Updated by:
Carrie F
Updated by:
Justice A
Installed by:
Andy C
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Kirk C.
7/26/2020
The under bed kit is the best. Having the truck bed useful when not traveling is great. I use a small electric hoist and casters for lifting and moving so the weigh is no problem. Installation was a little on the difficult side but any experienced DIYer can handle it.