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Demco 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Hitches

Demco 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Hitches

Item # DM6140

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Gooseneck and Fifth Wheel Adapters

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DM6140 - Connects to Gooseneck Hole Demco Gooseneck and Fifth Wheel Adapters
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Product Images


  • Gooseneck Hitch to Fifth Wheel Trailer
  • Connects to Gooseneck Hole
  • Demco
  • Adapts Truck
  • Hitch Adapters
  • No Offset
  • Fixed Height
Install this adapter in the ball hole of your B&W Turnoverball gooseneck hitch to get above-bed base rails for your fifth-wheel trailer hitch. Universal rails provide attachment points in your truck bed for a standard fifth-wheel hitch. Call 800-298-8924 to order Demco gooseneck and fifth wheel adapters part number DM6140 or order online at etrailer.com. Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Demco 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Hitches. Gooseneck and Fifth Wheel Adapters reviews from real customers.


  • All Info
  • Reviews (19)
  • Q & A (62)
  • Videos (1)
  • Photos
  • Why etrailer?

Demco Gooseneck and Fifth Wheel Adapters - DM6140

Install this adapter in the ball hole of your B&W Turnoverball gooseneck hitch to get above-bed base rails for your fifth-wheel trailer hitch. Universal rails provide attachment points in your truck bed for a standard fifth-wheel hitch.


Features:

  • Adapter mounts in your gooseneck trailer hitch to supply the above-bed base rails necessary for installing a 5th-wheel hitch
    • Works with B&W Turnoverball gooseneck trailer hitches
    • Compatible with Demco Hijacker Premier Series, B&W, Curt, Draw-Tite, Hidden Hitch, Husky, Reese, and Valley above-bed 5th-wheel trailer hitches
  • Adjustable mount allows for bed mats and liners
  • Fast, easy installation
    • Drop adapter into gooseneck ball hole and lock in place
  • Sturdy, black powder coated steel resists corrosion
  • Made in the USA
  • 5-Year limited warranty


Specs:

  • Gross towing weight: 21,000 lbs
  • Vertical load limit: 5,250 lbs


Notes:

  • Do not use this adapter with the Demco Hijacker Autoslide hitch or any other automatic sliding fifth-wheel trailer hitch.
  • When using this adapter, you may have to remove the safety chain loops from your gooseneck hitch if they are mounted front/back rather than side to side.


6140 Demco Base Rails w/ B&W Ball Adapter for 5th Wheel Trailer Hitches







Video of Demco 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Hitches


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




Video Transcript for Demco Gooseneck and Fifth Wheel Adapters - Adapts Truck - DM6140 Review

Speaker 1: Today, we're gonna take a look at the Demco fifth-wheel base rail adaptor for the BMW Turnoverball gooseneck hitches. This adaptor is designed to mount into your gooseneck trailer hitch to supply your above-bed base rails that are necessary for installing a fifth-wheel hitch to your vehicle. This is designed to work with the BMW Turnoverball gooseneck trailer hitches, and the rails are compatible with standard, above-bed fifth-wheel hitches by Demco, BMW, CURT, Draw-Tite, Hidden Hitch, Husky, Reese, and Valley. It is an adjustable mount, so we'll allow for bed mats and liners. And it is a fast, easy installation.I just tilt this up a little. You'll be able to see the shaft that's attached right here.

You just drop this adaptor shaft in to the gooseneck ball hole and then you lock it right into place with the included bolt and lock plate. The finish, it's a nice, sturdy, black powder coat steel, which will help resist corrosion. This part is made in the USA. A few specs on this, the gross towing weight capacy is 21,000 pounds. Vertical load limit if 5,250 pounds, and one last note about this is this adaptor cannot be used with any automatic sliding fifth-wheel hitches.

And they even have stickers right here that say that. But that should do it for the review on the Demco fifth-wheel base rail adaptor for the BMW Turnoverball gooseneck hitches.


Customer Reviews

Demco 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Hitches - DM6140

Average Customer Rating:  4.9 out of 5 stars   (19 Customer Reviews)

Install this adapter in the ball hole of your B&W Turnoverball gooseneck hitch to get above-bed base rails for your fifth-wheel trailer hitch. Universal rails provide attachment points in your truck bed for a standard fifth-wheel hitch.

- DM6140
by:

The adator I purchased is a great piece of engineering. Instalation was very easy. I am very happy with it so far. Have not towed my 5th wheel yet but will soon. The only thing I can suggest to etrailer is the packaging. The cardboard box was broken open on one side and retaped. In a few places the paint was chipped off. I repainted the chips before installation so they will not rust. 572383



- DM6140
by:

Product is as it says it was on the listing. I priced this item at a local camper store in Cincinnati Ohio where I reside and the price was $509.87 before tax. When I buy more items I will buy from your company in the future and will drive by my local camper store. Great communication via email and was received when it was expected. Installation took approximately 10 minutes and is an excellent product. 430963



- DM6140
by:

This product worked great. Used it in a 2016 Ram 2500 4x4 with the B&W turnover ball. The only problem is the safety chains for the B&W wont let this set flat against the bed of the truck. I solved this problem by using a heavy duty 1/4 inch rubber bed mat between the bed and this bracket and cut the rubber around the B&W hole and safety chains. That helped take up the extra space and helped to protect the spray in bed liner from being rubbed. Had no problems towing my fifth wheel and was happy I don't have these rails permanently mounted in my truck bed. 545103



- DM6140
by:

I am fairly unhappy with the fact that I can not use this 5th wheel rail system with my b and w gooseneck chain hooks installed. I have to unbolt the chain hooks to get the rails flush in the bed. I specifically asked if this was compatible with my set up prior to order. Pretty upset that it turned out different than what I was told. The rails are nice, but I did not want to have to modify my set up each time I want to hook up a gooseneck trailer. Hopefully this will help others in their research. 443736



- DM6140
by:

Arrived as described, works as advertised and was delivered two days after i ordered it. In very happy. 643416



- DM6140
by:

Great product fits awesome with spray in bedliner. easy install in my 2014 dodge 3500 long bed A lil heavy for one person but manageable Had to remove my rear safety chain loops but it said that was the way in the add 643338



- DM6140
by:

Works great, like the ability to remove it 611073



- DM6140
by:

It works perfectly with my B&W turnover hitch and Reese 20k 5th wheel hitch. 607590



- DM6140
by:

This hitch mount is great! I can now swap over from my 5th wheel hitch to a gooseneck in minutes. This is a great product. I had a gooseneck hitch already installed in my pick up but needed to tow my 29 foot 5th wheel. I other mounts to install the 5the wheel to my 2013 Ram but the gooseneck hitch mount was in the way. Found this set up on line at etrailer.com . Fast shipping, Ez to get my order in. 100 % satisfied. Plug and play. Took less than 10 minutes to install. 606283



- DM6140
by:

great product great service , Gwendolyn was very helpful i helping me find the product i needed , shipping was fast even through the Holidays , product arrived looks great cant wait to try it , Thanks E Trailer 585505



- DM6140
by:

Fast shipping! Adapter plate fit perfect. Installation was easy. Customer service rep was awesome on giving me information on correct adapter plate for my truck. Thank you Etrailers! I will do business again with you for all my trailer needs. 566907



- DM6140
by:

Very easy to install and works excellen t! 522913



- DM6140
by:

Excellent product. 471277



- DM6140
by:

Delivered in great time. Product fit just like it stated. Saved me a lot of time and money. I will buy from etrailer again. 451574



- DM6140
by:

Ordered incorrect hitch but was able to return it and had correct one within a week. Very easy to contact and able to correct issues quickly. 451121



- DM6140
by:

Was just what I was looking for I have a b&w flip over ball and couldn't put rails I with it so I went with the dm6140 to solve my problem and it worked perfectly thank you so much 447557



- DM6140
by:

Fast delivery and great people to work with at etrailer. I would buy from them again. 394744



- DM6140
by:

The adapter works great, it alow me to pull gooseneck trailers and my fifth wheel and still have a totally flat floor to carry cargo in the bed. 355178



- DM6140
by:

This is my second adapter. I tried the Curt X5 first and had problems with it fitting. But etrailer worked dilligently with me to find a solution. Ultimately refunding my money on the X5 and suggesting this Demco product. It fit and worked perfectly in my truck. Thanks etrailer for your help. 326937


Comments

Perfectly. One of the best purchases and customer experiences I’ve had. Thanks you etrailer.

Jeff B - 12/21/2017

32153
19
19

Ask the Experts about this Demco Gooseneck and Fifth Wheel Adapters
Do you have a question about this Gooseneck and Fifth Wheel Adapter?


  • Recommended 5th Wheel Rail Adapter for B&W Turnoverball Gooseneck Hitch Compatible with Husky Slider
  • The Curt X5 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Trailer Hitches # 16310 is not compatible with Husky 10-26K or 10-16K fifth-wheel sliders based on the design of the hitch and the adapter not being a fit. The adapter has a raised portion in the middle that is not compatible with the bases of these hitches or the B&W Patriot slider hitch. It also isn't compatible with certain truck models with the turnoverball hitch installed. For these hitches or vehicles, I...
    view full answer...

  • Does Demco 5th Wheel to Gooseneck Adapter Fit Better than the Curt X5 Adapter
  • The Demco adapter # DM6140 does have that draw down bolt similar to the one found on the Companion to make it good and tight. If your truck happens to be a certain year Ram, Toyota, or Ford truck then the exact problem you are describing is a known issue. There are actually several caveats surrounding the X5 adapter # 16310: Will not work with any 2013 - 2016 Dodge Ram 3500 or 2014 - 2016 Dodge Ram 2500 trucks that have a B&W Turnoverball gooseneck hitch installed. Will not work...
    view full answer...

  • Recommended Underbed Hitch Option to Use Reese 5th Wheel Hitch on a 2018 Chevy Silverado 2500 HD
  • There are 2 different options that I have for you to utilize an underbed hitch with an adapter so that you can use your Reese 5th Wheel Hitch # RP30051 in your 2018 Chevrolet Silverado 2500 HD. The first option would be to use the Reese Under-Bed Rail and Installation Kit # RP30868 along with the Reese Elite Series Underbed Rail Adapter # RP30156 which will give you industry standard base rail points compatible with your 5th wheel hitch. This option looks very much like the OEM towing...
    view full answer...

  • Does B&W Turnoverball Goosneck Hitch Work With Demco Adapter on 2014 Ram 3500?
  • There is no difference between # BWGNRK1314-5W and the B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1314 other than how they show up in our fit guide. Each will work with the B&W Companion Fifth Wheel Hitch # BWRVK3500-5W along with the Demco 5th Wheel Base Rails Adapter # DM6140 that you asked about. These rails are compatible with Demco Hijacker Premier Series, B&W, Curt, Draw-Tite, Hidden Hitch, Husky, Reese, and Valley above bed fifth wheel hitches. The Turnoverball...
    view full answer...

  • 5th Wheel Hitch Rail Compatibility with B&W Turnoverball Gooseneck Hitch
  • The B&W Custom Installation Kit w/ Base Rails for 5th Wheel Trailer Hitches # BWRVK2400 is not compatible with an already installed Turnoverball gooseneck hitch. The underbed gooseneck systems will mount in the exact same location to your frame rails, so you cannot have both systems installed. If you already have another 5th wheel hitch that uses industry standard base rails, then you can use the Demco 5th Wheel Base Rails Adapter for B&W Turnoverball # DM6140 or Curt X5 # 16310. An...
    view full answer...

  • Availability of Anderson Ultimate Gooseneck Hitch with 5th Wheel Connection
  • The Andersen Ultimate # AM3200 that we have on our site is compatible with a gooseneck hitch, but also includes an adapter making it compatible with 5th wheel hitches. This part is compatible with bed rails that have the industry standard attachment points. Please note that it is not meant to be used with truck beds shorter than 6' and is only compatible with fixed pin boxes. Installation instructions have been attached for you to reference.
    view full answer...

  • Sliding 5th Wheel Hitch Options for B&W Turnoverball Gooseneck Hitch
  • A sliding hitch is necessary for a short bed truck if you don't have a Sidewinder style rotating pin box to give you the turning clearance you need so your trailer doesn't make contact with the cab of your truck. Although the B&W Companion Slider # BWRVK3400-5W is the one of the best options for a slider, you are correct that you do have other options. The biggest issue is that you can't have 5th wheel rails and your gooseneck installed at the same time due to the mounting locations,...
    view full answer...

  • Will Demco 5th Wheel Base Rails Adapter Fit Husky Fifth Wheel Hitch
  • The rails provided for a fifth wheel hitch that the Demco 5th Wheel Base Rails Adapter # DM6140 has will fit a Husky EZ Roller slider hitch. If you have a B and W gooseneck hitch installed in your 2016 GMC Sierra 2500 this is the exact adapter you would need.
    view full answer...

  • Is the B&W Patriot # BWRVK3270 Compatible with the Demco Adapter # DM6140 for a 2014 GMC Sierra
  • Since the B&W Patriot # BWRVK3270 that you referenced is compatible with industry standard base rails it is compatible with the Demco 5th Wheel Base Rails Adapter # DM6140 that you referenced. This adapter fits B&W gooseneck hitches, like part # BWGNRK1012 on your 2014 GMC Sierra 6-1/2 foot bed, and provides industry standard base rails for use with 5th wheel hitches. If you are just looking for a way to use a sliding 5th wheel hitch safely with your B&W gooseneck hitch then I recommend...
    view full answer...

  • Is the Demco Base Rail Adapter # DM6140 Adjustable Vertically for Truck Bed Liners
  • The shaft portion of the Demco 5th Wheel Base Rails Adapter # DM6140 that you referenced is vertically adjustable so that you can match the height of the bed perfectly. This is helpful when the truck has a bed liner and the bed floor is slightly raised because of it. I attached a picture that shows how the adjustment is made.
    view full answer...

  • Distance Between Mounting Slots of Demco 5th Wheel Base Rails
  • The slots on the top of the fifth wheel rail adapter part # DM6140 are 29 inches apart for the outside slots and 20-1/2 inches for the inside rails. Typically rails will have a third set of slots that are 10 inches apart.
    view full answer...

  • Best 5th Wheel Hitch to Use for a 2013 Silverado 2500 with a 6-1/2 Bed and B&W Gooseneck Hitch
  • I do have a solution for you, but unfortunately you cannot use a Sidewinder or the Demco Adapter # DM6140 and sliding 5th wheel hitch with the B&W Gooseneck hitch installed on your 2013 Chevrolet Silverado 2500HD. The reason being that there will be too much torque that rests on the one connection with the gooseneck hitch. You could use the Demco Adapter # DM6140 with your Reese 20K # RP30081 or a manual sliding 5th wheel hitch like the Reese 20K # RP30083, but you cannot use it with...
    view full answer...

  • Is the Curt X5 Gooseneck Adapter Compatible With the B&W Turnoverball Gooseneck Hitches
  • The Curt X5 5th Wheel Base Rails Adapter # C16210 is meant to work hand-in-hand with the Curt Double Lock Gooseneck Trailer Hitches. For an adapter that is compatible with the B&W Turnoverball Gooseneck Hitches, like part # BWGNRK1012-5W, you would need the Demco # DM6140 which is meant to be used with the B&W Gooseneck Hitches. This adapter will give you base rails that are compatible with 5th wheel hitches that fit in standard base rails. The Demco Hijacker Premier Series Double Pivot...
    view full answer...

  • Will a Slider 5th Wheel Trailer Hitch Fit Demco 5th Wheel to Gooseneck Adapter DM6140
  • Any trailer hitch that fits in industry standard above the bed rails will fit in the Demco adapter # DM6140. Most hitches will fit in the slots on the rails that are spaced 20-1/2 inches apart on center. Any hitch that mounts on 10 inch centers (side to side) will NOT fit. I recommend using a slider hitch such as # RP30051 which can slide back 10 inches to provide more clearance when turning. But, if you have a B&W Turnover ball hitch (hitch is what adapter # DM6140 fits) then I recommend...
    view full answer...

  • Recommended 5th Wheel To Gooseneck Base Rails Adapter For 2017 Ford F-250
  • I reached out to my contact at Curt and they advised me that the new 2017 Ford F-250 Super duty has shallow gooseneck spacing because of the new aluminum bed, as a result the # 16310 will not work. However when I reached out to my contact at Demco, they confirmed that the Demco 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Hitches # DM6140 will fit. This product has an adjustment bolt to lock the ball in place. On this product where the pin goes through you are able to...
    view full answer...

  • Will Demco 5th Adapter for B&W Turnoverball Gooseneck Hitch Fit with Husky 5th Wheel Hitch
  • The Curt X5 Adapter # 16310 does have an issue with some fifth wheel hitches because of the cross member making contact with the center of the adapter. The X5 is raised slightly in the middle that causes this. I verified with Demco that their adapter for B&W Turnoverball gooseneck hitches, part # DM6140, will work with your Husky hitch as long as it fits into industry standard rails.
    view full answer...

  • How To Install A Reese 5th Wheel Hitch Using A B&W Gooseneck Hitch
  • Yes, the Demco 5th Wheel Base Rails Adapter for B&W Turnoverball Gooseneck Hitches part # DM6140 will work with a B&W gooseneck hitch and a Reese 5th wheel hitch so long as the Reese 5th wheel hitch uses industry standard rails.
    view full answer...

  • Fitment & Compatibility of Demco 5th Wheel Rail Adapter on a 2015 Ram 2500 w/Factory B&W Gooseneck
  • Great news! The Demco # DM6140 you were looking at will be a fit for the B&W square gooseneck on your 2015 Ram 2500. This is because the pin hole that the gooseneck will mount through is adjustable. The bolt at the top center will allow you to customize the needed height for your gooseneck for your factory installed B&W gooseneck on your 2015 Ram 2500. I have linked the above mentioned product to this page for your viewing and purchasing convenience.
    view full answer...


Do you have a question about this Gooseneck and Fifth Wheel Adapter?




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Info for this part was:

Expert Research:
Jackie C
Expert Research:
Michael L
Edited by:
Lindsey S
Expert Research:
Michael H
Installed by:
Jeff D
Expert Research:
Jameson C
Expert Research:
Adam R
Photos by:
Zach O
Updated by:
Sarah W
Written by:
Amanda M
Updated by:
Hannah L
Updated by:
Kristina F

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