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Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches

Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches

Item # DR37FR
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Fifth Wheel Installation Kit

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DR37FR - Below the Bed Demco Custom
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Custom, underbed rail kit allows for uninhibited use of your truck bed once your hitch is removed. Works with Hijacker Underbed Mount Series (UMS) fifth-wheel and gooseneck hitches. Custom-fit frame brackets offer a simple installation. Call 800-298-1624 to order Demco fifth wheel installation kit part number DR37FR or order online at etrailer.com. Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches. Fifth Wheel Installation Kit reviews from real customers.
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  • Reviews (2)
  • Q & A (18)
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Demco Fifth Wheel Installation Kit - DR37FR

  • Below the Bed
  • Demco
  • Custom

Custom, underbed rail kit allows for uninhibited use of your truck bed once your hitch is removed. Works with Hijacker Underbed Mount Series (UMS) fifth-wheel and gooseneck hitches. Custom-fit frame brackets offer a simple installation.


Features:

  • Installation kit is designed for use with Demco Hijacker UMS 5th-wheel and gooseneck 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
    • Brackets bolt onto the outside of your truck's frame rails
    • Crossmembers sit along top of frame rails, beneath bed
    • Drilling required for installation
  • Sturdy, black powder coated steel resists corrosion
  • Rails and installation hardware included
  • Made in the USA


Specs:

  • Application: Demco Hijacker Underbed Mount Series (UMS) 5th-wheel and gooseneck trailer hitches
  • 5-Year limited warranty


8551012 Demco High Jacker UMS Under Bed Rail Frame Bracket Kit

Installation Details DR37FR Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches - DR37FR

Average Customer Rating:  4.5 out of 5 stars   (2 Customer Reviews)

Custom, underbed rail kit allows for uninhibited use of your truck bed once your hitch is removed. Works with Hijacker Underbed Mount Series (UMS) fifth-wheel and gooseneck hitches. Custom-fit frame brackets offer a simple installation.

- DR37FR
by:

I had an old hitch kit in my older truck. The truck company changed the design of my new truck. I called etrailer sales and they gave me the part number for the updated kit. They knew of the change and had the design in stock. They shipped the new one right off. In fact I got it sooner then I needed it as it was in the middle of the winter. All the parts were there and it went in nicely and work great.



- DR37FR
by:
2001 Ford Excursion

Good product. Easy install. Would give it five stars except you DO HAVE TO DRILL holes in your frame. That was a little disappointing. Other than that great product.


2
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Ask the Experts about this Demco Fifth Wheel Installation Kit

  • Underbed Rail and Installation Kit for Demco Hijacker & 2020 GMC Sierra 2500
    I suggest the Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches Item # DR37FR. This custom fit, under bed rail kit allows for uninhibited use of your truck bed once your hitch is removed. Works with Hijacker Under bed Mount Series (UMS) fifth-wheel.
    view full answer...
  • Custom Fifth Wheel Rail and Bracket Kit For 2020 GMC Sierra 2500 6-3/4 Ft Bed
    The custom bracket kit for your 2020 GMC Sierra 2500 6 3/4 Foot bed is part # DR37FR to use your existing Demco Hijacker part # DM8550034 in your new truck.
    view full answer...
  • Recommended Underbed 5th Wheel System and Sliding Hitch for 2021 Chevy 2500 Compatibility
    There is not currently a non-OEM underbed puck system compatible with your 2021 Chevy 2500. The Reese Elite underbed pucks are what fit your Ford compatible Sliding 5th wheel hitch, but they have not yet made a compatible system for the new model Chevy/GM trucks as of 11/2020. Unfortunately that means there isn't currently a fit compatible with your hitch for your truck so another option will need to be considered. My recommendation for a clean bed and sliding hitch for your truck...
    view full answer...
  • Is Demco DR37FR Under Bed Rail System Compatible Wtih B&W or Curt 5th Wheel Hitches
    The Demco # DR37FR Underbed Rail Kit you'd looked at is only compatible with the Demco Hijacker Underbed Mount Series (UMS) 5th-wheel and gooseneck trailer hitches such as: • Hijacker UMS Gooseneck Hitch # DM5988 • Hijacker UMS 20K Double Pivot 5th Wheel Hitch # DM8550032 • Hijacker 18K Autoslide # DM8550022 • Hijacker 21K Autoslide # DM8550037 For an underbed mount for a sliding B&W Companion hitch like # BWRVK3400-5W, you'd need their Turnover Ball Gooseneck hitch like...
    view full answer...
  • Demco 21K Hijacker AutoSlide 5th Wheel Hitch for 2021 GMC Sierra Short Bed
    The Demco Hijacker Auto Slide 5th wheel hitch is a great choice for short bed trucks. For the 2021 GMC Sierra 2500, you'll want to use the # DM8550035 which is compatible with the # DM6333 adapter that fits into the GM puck system (assuming your truck is equipped with the puck system). If your truck doesn't have the GM puck system, and you want an under-bed mount you'd use the # DM8550037 along with the Demco # DR37FR under-bed rails. If you'd like to install a 7-way connector...
    view full answer...
  • Under Bed Rail Kit for Demco DM8550022 Auto Slide 5th Wheel Hitch on 2020 Chevy Silverado 2500
    We'd be glad to help you with that. Demco does make an under-bed rail kit that's compatible with their # DM8550022 Hijacker Autoslide hitch that will work with your 2021 Chevy Silverado 2500. You'll want to use the # DR37FR under bed rail kit. I've linked to the installation instructions for you. The Hijacker Autoslide is a great choice, and will be very convenient as you won't need to get out of the truck to manually actuate the slider. If you'd like an in-bed 7-way trailer connector...
    view full answer...
  • Which Auto-Slider Hitch for 2021 Chevy Silverado 3500 Compatible with Underbed Mounting Kit
    I have a solution for you, but there is not an aftermarket OEM puck style system for your 2021 Chevy Silverado 3500. However, you can use the Demco Hijacker Auto-slide Hitch 21k # DM8550037 with the underbed mounting kit # DR37FR to give you exactly what you're looking for. The Hijacker Auto-slide is a great choice that you'll never have to worry about getting out of the truck to engage the slider. The Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck...
    view full answer...
  • Best Towing Option For A 2022 Keystone Montana 3121RL Pulled With A 2021 GMC Sierra 3500 6-3/4' Bed
    The Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP94720 is only going to be roughly 3/4" longer from the 5th wheel pin box that comes standard on your 2022 Keystone Montana 3121RL. For this reason I do not recommend using this when towing with your 2021 GMC Sierra 3500 with the standard length bed. To make it simple the rear axle center line is approximately 42" from the cab of your Sierra. The Montana is 8' wide, at a full jackknife turn 6" of your Sierra is going...
    view full answer...
  • Auto Slide Hitch, Underbed Rail Kit, and Goose Neck Adapter For a 2020 Chevrolet Silverado 2500
    With your 2020 Chevy Silverado 2500 only having a 6-3/4 ft bed with out the OEM prep package it's recommended to use a slider to provide enough clearance between the nose of the camper and the cab of the truck. I recommend the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 21,000 lbs Item # DM8550037. This hitch provides you with the auto slide feature which takes the hassle away from getting out of your vehicle and pulling a lever to allow the hitch...
    view full answer...
  • Recommended Sliding 5th Wheel Hitch for 2021 Chevy Silverado 3500 Short Bed
    The puck system is not something that is there unless you have the 5th wheel prep package on your 2021 Chevy Silverado 3500, so you will need to get a rail system as well as a 5th wheel wiring harness in order to use a 5th wheel hitch. Since your Chevy 3500 is a short bed, you will need a sliding hitch, and while you mentioned you were looking at 25k hitches, there aren't any with that capacity for your short bed, but there is a 21,000 lb option that is one of the best hitches available,...
    view full answer...
  • Underbed Fixed Fifth Wheel Hitch for Short Bed 2020 Chevy Silverado 2500 w/o OEM Rail Kit
    Since 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...
  • Recommended Auto Slide 5th Wheel Hitch for 2020 Chevy Silverado 3500 Short Bed
    We have just what you're looking for. The hitch I recommend using in your 2020 Chevy Silverado 3500 is the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Underbed - 21,000 lbs # DM8550037, which provides 14" of travel to keep your 5th wheel nose from contacting the cab of the truck when making tight turns. You will also need the Demco Underbed rail kit # DR37FR, which is great because the underbed installation means it will allow you to have a clear truck bed...
    view full answer...
  • Converting Demco Hijacker UMS Double Pivot 5th Wheel Hitch to 2020 Chevy Silverado 2500 Short Bed
    Thanks for the photo, and we do have a solution for you here to convert your Demco Hijacker UMS Double Pivot 5th wheel hitch so you can use it in your Chevy. There are indeed underbed rails for your 2020 Chevy Silverado 2500 short bed that will allow you to mount the hitch, though you will need to swap out the side rails of the hitch in order to fit the underbed mounting brackets. So, here is exactly what you will need for your '20 Silverado 2500: - Underbed Rail and Installation Kit...
    view full answer...
    Image 1 for
  • Parts Needed to Install the Demco Hijacker Autoslide on 2021 GMC Sierra 2500HD without OEM Pucks
    We've got just what you're looking for with the Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches # DR37FR, which is the underbed mounting kit for your 2021 GMC 2500HD. This is compatible with your Demco Hijacker Autoslide 18k # DM8550022 and will allow you to mount the hitch when towing and have an obstruction free truck bed when you're not. I've linked a review and installation video of this for you to check out as well.
    view full answer...
  • Is There an Underbed 5th Wheel Hitch Option for a 2020 Chevy Silverado 2500 Without Pucks
    Yes, there are two underbed mounted fifth wheel hitch options for a 2020 Chevrolet Silverado 2500 but each of which are designed to work with their own hitches. These two options are from B&W and Demco. The B&W Companion part # BWRVK3400-5W and part # BWGNRK1020-5W or the Demco Hijacker part # DM8550034 and part # DR37FR. The main difference is the auto sliding feature on the Demco Hijacker so that is my recommendation. Unfortunately, there would be no way to use the B&W Companion OEM...
    view full answer...
  • Underbed Rail and Installation Kit for Demco Hijacker and 2020 Chevrolet Silverado 2500
    The Underbed Rail and Installation Kit for Demco Hijacker Hitches, # DR37FR is a confirmed fit for your 2020 Chevrolet Silverado 2500 with 6-3/4 Foot Bed without OEM Prep Pkg. This will be needed to mount the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Underbed - 18,000 lbs., # DM8550022.
    view full answer...
  • Demco Highjacker Mounting System For a 2021 Chevrolet Silverado With 6-3/4' Bed Without OEM Puck Pkg
    The Demco Hijacker Autoslide 5th Wheel Trailer Hitch # DM8550037 requires multiple mounting points on the frame of your 2021 Chevrolet Silverado 2500. Therefore you will not be able to use the Curt X5 5th Wheel Base Rails Adapter # 16310. No autoslide 5th wheel hitches can be used with a single point mount such as a B&W turnover ball or Curt double lock gooseneck. The Underbed Rail and Installation Kit for Demco Hijacker # DR37FR will allow you to keep a clean bed when you do not have...
    view full answer...
  • Sliding 5th Wheel Hitch Recommendation For A 2020 GMC Sierra 2500HD AT4 Short Box
    Yes, you will need a sliding fifth wheel hitch to give you the clearance you need. I recommend the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550034, which features a pivoting head to allow for easy hookup and disconnect. This hitch also provides 14" of additional clearance for tight turns. A normal sliding hitch will cause you to get out of your vehicle to manually move your hitch for each turn you want to make. Since the Demco Hijacker is an automatic sliding hitch,...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Lindsey S
Edited by:
Lindsey S
Employee Kristina F
Written by:
Kristina F
Employee Noah M
Updated by:
Noah M

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