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

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

Item # DM8551011
Retail:$1,104.06
Our Price: $559.15
You Save: $544.91
Fifth Wheel Installation Kit

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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. 1-800-940-8924 to order Demco fifth wheel installation kit part number DM8551011 or order online at etrailer.com. Free expert support on all Demco products. Great prices and Fastest Shipping for Underbed Rail and Installation Kit for Demco UMS 5th Wheel and Gooseneck Trailer Hitches. Fifth Wheel Installation Kit reviews from real customers.
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2023 Chevrolet Silverado 1500 - 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 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


8551011 Demco Hijacker UMS Under Bed Rail Frame Bracket Kit

Installation Details DM8551011 Installation instructions

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See what our Experts say about this Demco Fifth Wheel Installation Kit

  • Custom Base Rail Bracket Kit for 5th Wheel Hitch on a 2019 Chevy Silverado 1500 New Body 6-1/2' Bed
    If you already have a 5th wheel hitch that fits standard base rails, like the B&W Patriot # BWRVK3270, then the B&W custom base rail kit # BWRVK2504 is what you want for your 2019 Chevy Silverado 1500 New Body with the 6-1/2' bed. If you don't already have a 5th wheel hitch then I recommend using the Demco Hijacker Autoslide # DM8550022 with the underbed rail kit # DM8551011. This Hijacker eliminates the need to get in and out of your Chevy to lock and unlock the sliding feature like you...
    view full answer...
  • Recommended Flush Mount 5TH Wheel Hitch Attachment Points For a 2019 GMC Sierra 1500
    I have a couple recommendations for you that will depend on your bed length for your 2019 GMC Sierra 1500 and there is not a puck system style mount for your truck. First if you have a 5-1/2' or 6-1/2' bed I recommend the Demco UMS Underbed Rail and Installation Kit # DM8551011. This will provide 4 mounting points under the bed similar to the factory style puck systems. This will require you to use the Demco UMS series hitches or adapters. I recommend using the Demco Autoslide 5th Wheel...
    view full answer...
  • Recommended Autoslide Fifth Wheel For 2019 Silverado 1500 6-1/2' Bed
    We do not sell Pullrite products, but Pullrite does not list the 3100 as an option for your 2019 Chevrolet Silverado 1500 with a 6-1/2' bed. I recommend going with the Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider # DM8550022 and the Underbed Rail and Installation Kit for Demco Hijacker # DM8551011 which is a confirmed fit for your 2019 Silverado 1500 with a 6-1/2' bed. The Demco Hijacker # DM8550022 features a 18000lb towing capacity, and allows for 14" of travel for additional...
    view full answer...
  • Fifth Wheel Rail Kit for 2019 Chevy Silverado 1500 6.5 ft Bed for Using Reese 16k Slider Hitch
    The Demco rail kit part # DM8551011 that you referenced is an underbed fifth wheel rail kit that fits your 2019 Chevy Silverado 1500 6-1/2 foot bed but there isn't a way to adapt it to your Reese fifth wheel hitch. You'd need a set of above the bed rails instead like the Reese part # RP56015-53 which is a confirmed fit or you'd have to go with a Demco hitch like the automatic slider part # DM8550022 which is designed to fit this rail design and automatically slides back as you make tight turns.
    view full answer...
  • Underbed Installation Rails and 5th Wheel Hitch for 2019 Chevy Silverado 1500 with 6-1/2 Foot Bed
    The Underbed Rail and Installation Kit for Demco Hijacker # DM8551011 is absolutely a fit for your 2019 Chevy Silverado 1500 with a 6-1/2 foot bed and this does come with the needed hardware for installation. There is a fantastic hitch for this rail kit and your truck, though the part # DM6004 you referenced is simply a replacement part for a hitch. The hitch that does fit these rails is the is the Demco Hijacker Autoslide # DM8550022 which is a hitch you'll be thrilled you have because...
    view full answer...
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  • 2024 GMC Sierra 1500 5th Wheel Bracket Options to Fit with a Demco Hijacker 5th Wheel Hitch
    Hey Kevin! The FWH 24PA part number you referenced is actually just the part number for the head. Nevertheless, I have 3 different 5th wheel rail kits that fit your 2024 GMC Sierra 1500 - you just have to choose which one matches up with the rails installed on your Demco Hijacker: - Above-Bed Base Rails # DM8552034-71 - Underbed Rail and Installation Kit # DM8551011 - Base Rails for Demco SL Series 5th Wheel Trailer Hitches # DM8553019-12 Feel free to shoot some photos my way of what...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Justice A
Updated by:
Justice A
Employee Kristina F
Written by:
Kristina F

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