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Demco 5th Wheel Rail Adapter for Ram OEM 5th Wheel Towing Prep Package - 25,000 lbs

Demco 5th Wheel Rail Adapter for Ram OEM 5th Wheel Towing Prep Package - 25,000 lbs

Item # DM6099
Our Price: $649.00
You Save: $118.00
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Use your standard, above-bed fifth-wheel trailer hitch with your Ram factory, underbed 5th-wheel towing prep package. Adapter mounts in factory sockets and supplies mounting rails in your truck bed for attaching your hitch. 1-800-940-8924 to order Demco accessories and parts part number DM6099 or order online at Free expert support on all Demco products. Great prices and Fastest Shipping for Demco 5th Wheel Rail Adapter for Ram OEM 5th Wheel Towing Prep Package - 25,000 lbs. Accessories and Parts reviews from real customers.
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2024 Ram 3500 - Demco 5th Wheel Rail Adapter for Ram OEM 5th Wheel Towing Prep Package - 25,000 lbs

  • Fifth Wheel Installation Kit
  • Adapters
  • Rail Adapter
  • Demco

Use your standard, above-bed fifth-wheel trailer hitch with your Ram factory, underbed 5th-wheel towing prep package. Adapter mounts in factory sockets and supplies mounting rails in your truck bed for attaching your hitch.


  • Converts your factory-installed, underbed 5th-wheel mounting kit from Ram to standard, above-bed 5th-wheel base rails
    • Lets you use your 5th-wheel trailer hitch that attaches to standard, above-bed rails
  • Mounts to OEM pucks (or sockets) in your truck bed
    • Unit drops into pucks and locks in place
    • No drilling or welding required
  • Rust-resistant black powder coated steel construction
  • Made in the USA


  • Application: Ram trucks with OEM, underbed base rails
  • Maximum capacity: 25,000 lbs
  • Adapter will add 1-3/8" to height of hitch
  • Weight: 86 lbs
  • 5-Year warranty

This adapter is perfect if you want to use your standard fifth-wheel trailer hitch with your Ram truck's factory-installed, underbed fifth-wheel mounting kit. Just mount the adapter in your underbed rails using the integrated pucks and lock it place. Now you have the standard, above-bed base rails needed to install your fifth-wheel hitch.

6099 Demco Dodge Ram Truck OEM Adapter for Attaching Standard Fifth-Wheel Trailer Hitches

Installation Details DM6099 Installation instructions

Customer Satisfaction Score:

Customer Reviews

Demco 5th Wheel Rail Adapter for Ram OEM 5th Wheel Towing Prep Package - 25,000 lbs - DM6099

Average Customer Rating:  4.8 out of 5 stars   (168 Customer Reviews)

Use your standard, above-bed fifth-wheel trailer hitch with your Ram factory, underbed 5th-wheel towing prep package. Adapter mounts in factory sockets and supplies mounting rails in your truck bed for attaching your hitch.


Demco auto slide hitch works very well with my crew cab short bed Ram. Fits under my tonneau cover nicely. Trouble free thus far. Had to purchase a Demco plate for the camper to make the Rhino box hitch work. etrailer personnel were great in helping ensure I had the right products and kept me well informed of shipping dates.



Still working great.

2018 Dodge Ram Pickup

This is an excellent product. It arrived 1 day after ordering it. It had very good instructions that were easy to follow. It only took me 20 minutes to install. It fit tight, but perfectly. It will be the perfect base for the Demco autoslider that I'm going to put on it. I'm using it in my 2018 Ram 2500 Crew cab to pull a Keystone Cougar Half ton fifth wheel.



It works fantastic! Easy to install for towing 5th wheel and then easy to remove to have complete, open bed for hauling.

2021 Ram 3500

It's a good quality produce built well. It's heavy but that just gives you confidence when you hit those unions where the bride engineers and the road engineers didn't agree.

Dan L.


Still working perfect after a year of service.

Etrailer Expert

Mike L.


@DanL Great! We're glad to hear that!!


fast shipping. item got here a day early.
was lucky. everything fit in place. installation was very easy.
its mated to a Super Glide 2900 slider hitch sitting in a 2016 Ram 3500 Mega Cab dually.



after 1 year, the hitch adapter is still looking good. no paint chipping, no rust. still pulling strong.


It works as advertised. However, it adds bulk / weight but unfortunately it is required because the autoslider hitch I purchased does not come custom all-in-one for my 2020 Ram 3500 OEM puck system.


A BIG THANK YOU to Jenny and her crew at I had originally bought this puck rail adapter from Amazon and I did not take the poor reviews to heart. My mistake. On a time crunch and missing parts later, I realized I should have gone with etrailer earlier. They are a reputable business and they had AWESOME customer service and fast delivery. Jenny kept me updated on the shipment and even sent a follow email once the adapter showed delivered in their system!!!! I learned my lesson and should have done it right the first time and gone with etrailer (and they had it for the same great price). The adapter was super easy to install. Thanks again, Corey (life long customer from now on).


After minor adjustments installation was ok. Instruction were clear. My pullrite superglide fit perfectly. Thanks for this great product and etrailer I am going to have a great camping season.


ilove my5th wheel hitch


This adapter was just what I needed, able to use my hitch out of my old truck and didn’t have to spend a great deal more for another hitch.



Pulled my 30’ fifth wheel 7600 miles this year without any problems. Definitely recommend this product!!!


Hitch installed Easily and took only 15 Min.

Fit was great. Thank you for the great advice on this product.


Good morning. The UPS delivery driver showed me the box which was damaged and ripped open exposing the product. It doesn't appear damaged, but I won't know until I try to fit it to my truck of which I haven't taken delivery of yet. I would suggest packing these types of items in a wooden frame or box to prevent this. The item looks very solid and I will be able to rate it in the near future.

2018 Dodge Ram Pickup

Intal on 2018 Ram 2500 super easy super nice

2018 Ram 2500

E-trailer is a first class company and service is outstanding. Shipping is fast and customer service reps are very nice, friendly, and know their product. I am so pleased with the way my order was handled and if the need arises, I will order from this company again. If you need any parts for trailers or towing, give them a chance to prove how good their products and service really is. First class all the way

Marilyn G.


It is working just fine. We are very well pleased with it.

Dodge Ram Pickup

Ordered with the Demco 16k Hitch. This unit installed in the factory pucks of my Ram 2500 with little fuss. Very happy with eTrailer and Demco.

2022 Dodge Ram Pickup

very well-built rail adapter fits prefect in my 2500 ram OEM 5th wheel towing prep. The only reason I gave a 4-star rating is the packing box it came in was torn up on each corner and the rail adapter was not protected from scratchers. Need to ship in a heavy-duty box.

Dodge Ram Pickup

Works Excellent for Ram Trucks with Factory 5th Wheel Prep Package!


The truck bed rail adapter required moving two of the shims for a proper fit, but this was done fairly quickly. Once the shims were moved, the part fit properly into my truck bed. The next step (adding the Auto Slide 5th Wheel Hitch) into the rail adapter went off without any problems. I would definitely recommend having two people to move the hitch into place, or have an overhead hoist to help to install the hitch. It is heavier than I expected but it fit perfectly into the bed rail adapter.


I have researched purchasing a "Sliding Fifth Wheel" extensively. Researched the few that are on the market. Without a doubt hands down the very best designed & fabricated unit for the job is the "Demco Model #6107 21K Autoslide. The workmanship on design & build is "Impeccable" second to none! Secondly when I decided to purchase this unit I went with "etrailer". Paula at etrailer knew this product "Inside & Out". She answered all my questions and gave additional info on this 5th. wheel. It was delivered exactly when she said it would and it was secured to a wooden pallet and every piece was packed the tightly and shipping foam to protect it. Upon opening all the exterior shipping protection material it looked even better then on the computer screen. I am more then happy with this slider and the personable service Paula and etrailer provided. Thanks Again Paula.

Dodge Ram Pickup

The rail adapter arrived at my home in excellent shape although the cardboard box it came in was coming apart. All the parts and instructions were there. Mounted the rail in Ram Truck in about five minutes. Fit perfectly and solid. My draw Tite 5th wheel hitch also fit the plate perfectly. I have pulled my camper with this setup and everything seems to be as it should. The plate is robust and we'll manufactured. Very happy with the product and etrailer!


etrailer was great! Although this 5th wheel rail adapter weighs about 90 pounds, it was delivered in just a few days and two days sooner than originally estimated. etrailer support was also good and it’s very nice to see the estimated wait time posted in real time on their website. The Demco product is very heavy duty and well made, however I had two pretty big issues to work around. The first is that only with great luck will this 90lb adapter simply drop into the four puck mounts. After much time spent trying to do so, I loosened the four socket/post assemblies and with the extra play it became easy to get the adapter seated. It would have been perfectly normal to do this earlier, but there is no mention in the instructions that this may be necessary. It would also have been helpful if the instructions stated the when the adapter is fully seated, it should sit slightly above the bed floor. (I called Demco to verify this.). The second significant issue I had was that for my truck, a RAM 2500, three of the four levers on the sockets were too tight to turn without tapping a LOT with a hammer. The instructions do say that one or two shims can be removed to loosen the fit, however the (unspecified) locknut is 1-?”, torqued high and I didn’t have tools for that job. I suppose that a hitch/trailer service garage would know about these issues and have the tools at the ready, but for a one-off DIY job it could have been much faster and easier with better/more complete installation instructions.


Rail adapters have worked out perfect for my truck


Looks like an excellent product very well constructed. The only problem I had was I had to loosen up for nuts on each puck and adjust so they would fit in and caps that the puck screws in to take the outer ring off because it was setting a little too high, probably at eighth of an inch other than that no problem nice product


Fit perfect. Good instructions make it raise to assemble.
ETrailer provides excellent service and advise.


Shipped to a small campground where we installed on a new truck after our old truck died.
Easy to install and adjust

2018 Ram 2500

Great product and I'd buy it again. The only reason I'm giving it four stars is due to powder coating inside two of the holes. One I was able to scratch away at with a pick and get the bolt to thread, the other I ended up getting by undoing what I had installed, lifted the thing up, and threaded it in from underneath all the way through to clear it out. I do not have a tap and die set. If you buy this, I'd recommend checking to make sure the bolts go in every hole prior to installing it, to save on time.

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