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Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches
B and W

Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches

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$699.00
5th Wheel Hitch Rails

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Install a Companion fifth-wheel hitch in your truck bed with this custom kit. Better than a traditional mounting kit, this setup doubles as a gooseneck hitch when the fifth wheel is removed, and the underbed design allows for full bed access. 1-800-940-8924 to order B and W 5th wheel hitch rails part number BWGNRK1020-5W or order online at etrailer.com. Free expert support on all B and W products. Great prices and Fastest Shipping for Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches. 5th Wheel Hitch Rails reviews from real customers.
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  • Reviews (39)
  • Q & A (0)
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B and W 5th Wheel Hitch Rails

  • Below the Bed
  • Custom
  • B and W

Install a Companion fifth-wheel hitch in your truck bed with this custom kit. Better than a traditional mounting kit, this setup doubles as a gooseneck hitch when the fifth wheel is removed, and the underbed design allows for full bed access.


Features:

  • Lets you install your B&W Companion 5th wheel trailer hitch (BWRVK3500 or BWRVK3400)
  • Doubles as heavy-duty Turnoverball gooseneck trailer hitch
    • Includes rails, gooseneck hitch head, safety chain loops, and hitch ball
  • Provides complete truck bed access when you're not towing
    • Single hole in center of bed is mounting point for hitch
  • Installs easily using existing holes in your vehicle's frame
    • No welding or frame drilling required
    • Truck bed does not have to be removed
    • 4" Diameter hole must be cut into bed
  • Powder coated steel is sturdy and corrosion resistant
  • Made in the USA
  • Limited lifetime warranty


B&W Turnoverball Gooseneck Trailer Hitch

B&W Turnoverball Gooseneck Hitch

Not only does this kit provide you with a sturdy, custom base for installing your Companion fifth-wheel trailer hitch in the bed of your truck, but it also doubles as one of the most recognizable gooseneck hitches on the market. This fifth wheel installation kit actually is the Turnoverball gooseneck hitch from B&W.


Gooseneck Specs:

  • Gross towing weight: 30,000 lbs
  • Vertical load limit: 7,500 lbs
  • Ball size: 2-5/16"

B&W Companion Installed in Turnoverball Gooseneck Hitch

With the B&W Turnoverball underbed gooseneck trailer hitch you get the best of both worlds. When you go to tow a gooseneck trailer, the Turnoverball creates a sturdy, dependable connection with your trailer. And when you're done towing, you can stow the ball upside down in the hitch to get full bed access and a clean appearance. When you're ready to tow your fifth wheel trailer, just install the Companion in the ball hole in place of the gooseneck ball and lock the post in place using the built-in handle. You can remove the fifth wheel when you're done towing, leaving your truck bed open once again.


Simple, Custom Installation

This kit is custom designed for your vehicle. The mounting brackets bolt to existing holes in your truck's frame. While some modification is required - you will need to cut a 4" diameter hole in your bed for the hitch ball and drill holes for the built-in safety chain loops - there is no need to weld onto or to drill into your frame.


Once you have the brackets and center section installed, set up the operating handle. This handle is designed to be accessed from the rear driver's-side wheel well. On the end of the handle is the heavy-duty steel pin that secures the mounting post of the Companion (or the base of the gooseneck hitch ball).



GNRC920 B and W Turn Over Ball Under-Bed Gooseneck Trailer Hitch - 30,000 lbs

GNRM1020 B and W Turn Over Ball Gooseneck Custom Installation Kit for Chevy/GMC

Item # BWGNRK1020-5W

Installation Details BWGNRK1020-5W Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches - BWGNRK1020-5W

Average Customer Rating:  4.9 out of 5 stars   (39 Customer Reviews)

Install a Companion fifth-wheel hitch in your truck bed with this custom kit. Better than a traditional mounting kit, this setup doubles as a gooseneck hitch when the fifth wheel is removed, and the underbed design allows for full bed access.

by:

The best of the best. I've used them all. This is a game changer. I can't even begin to explain how much I love this hitch. I used to order all my trucks with the factory puck/gooseneck system. Not anymore. Much cleaner look with the B&W. It's worth the install effort to have a B&W system by far.



by:

I bought a 2020 Silverado 2500, it had a curt gooseneck hitch, it was a pain to remove took like 2 hours to take out, it’s not as well made as the bw hitch glad I put it in, it is well made and easy to install, no problems to install. Thanks for the great product.



by:

I am happy with the products. I do like the new set up B&W came up with for the newer trucks. One thing I was not happy with was when I ordered the Turnover Ball Hitch along with the Companion 5th wheel hitch for my customer, I was shorted the center section for the Turnover ball hitch. Thankfully my customer was understanding, just put a huge delay in getting it installed and came down to the wire before my customer left for their trip.



by:

Have not installed yet but all the hardware is very heavy duty and painted with no defects looks good



by:
2022 Chevrolet Silverado 2500

Had a little hiccup on the delivery, but Tiffany at e trailer took care of everything for me. Got it squared away very very fast. so a big thank you to each trailer for taking care of me.



by:

Very well made, and exceptionally rugged. I had this installed in my 2022 GMC Sierra 2500 HD by a local spring shop that works primarily with heavy commercial trucks, as my truck did not have a 5th Wheel/Gooseneck package. They were very impressed with construction, fit, finish and ease of installation. I also purchased the B&W Companion 5th Wheel hitch to go along with it, to tow my 14k lbs. camper. I have just completed a 1200 mile trip towing camper from Wisconsin to northern New England, and I was very pleased with the performance of both components.



by:

After having this hitch installed in our truck, we have towed our 5th wheel camper all over the US with no problems.



by:

Easy to order and fast on delivery. Definitely heavy duty!



by:

Received this Underbed Installation Kit, the quality of the hardware was perfect! The reason I gave it a 4-star review vs 5-star was the documentation. We had to go to the Website to find the Step-by-Step installation instructions. It would also be VERY helpful if they would BOLD the Hand Tighten Only stuff to ensure this isn't missed. We tightened several of the bolts and found out later these needed to be loosened until final assembly.



by:

Great hitch
Wouldn’t buy any other brand
easy install
It’s versatile to use gooseneck or put in 5 th wheel hitch



by:
2020 Chevrolet Silverado 2500

Product is excellent and etrailer.com is even better. I wouldn't buy anything but a B&W and every time I do buy etrailer has it here in days. This is my 3rd hitch from them and every time has been flawless. Very happy.



by:

Great product! Great website! Installing this fifth wheel kit was not for the faint of heart but with installation videos and clear, easy to understand instructions. We got ‘er done! Shipment came 3 days earlier than expected



by:

Fit is perfect and just as advertised, instructions were complete and very detailed



by:

I purchased this unit because I wanted to keep the bed as clean as possible when not towing. After getting a quote for installation I decided to try it myself. It went very well. Recommend 2 people for installation because it is heavy. Went in with little difficulty. Would recommend highly.



by:

Straight forward install, great quality. Lots of videos for installation instructions to let you know how to do it.



by:
2022 Chevrolet Silverado 3500

The instructions are done well, and the install videos are a nice touch. Cant beat the prices.



by:

heavy but box arrived in decent shape and product had no scratches. Installation was easy but you need two people or a lift.



by:

Simple installation, great quality, glad to have it done.



by:

Very quick shipping



by:
2021 Chevrolet Silverado 3500

Shipping was fast. Fairly easy to insta ll



by:
2022 Chevrolet Silverado 2500

I like the videos on installing what your purchasing.



by:
2021 Chevrolet Silverado 2500

Somenof the bolts were dented with being in the same plastic bag. And some of the paint was chipped off.



by:



by:
2020 Chevrolet Silverado 2500



by:
2022 Chevrolet Silverado 2500

fast to fill order and ship.


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Show More Reviews

See what our Experts say about this B and W 5th Wheel Hitch Rails

  • What Is An OEM Prep Package And How Do I Know If I Have It
    The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th Wheel Hitch w/ Slider for Chevy/GMC Towing Prep Package # BWRVK3775 you were looking at has four puck style feet that drop into the pucks and a lever on each leg that simply turns to lock or unlock the leg in the puck. The prep package will typically also...
    view full answer...
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  • Recommended Gooseneck Hitch for a 2024 GMC Sierra 2500 w/ a 6-3/4 Bed
    To add a gooseneck hitch to your 2024 GMC Sierra 2500 with a 6-3/4' bed, I recommend the B&W Custom Underbed Installation Kit item # BWGNRK1020. It has a massive 30,000 lbs capacity and fits both the 6-3/4' and 8' bed lengths. The B&W item # BWGNRK1020 includes all hardware necessary to complete installation on your truck. The custom fit brackets install into preexisting holes in your trucks frame. It is made in the USA and powder coated to prevent rust. This underbed system allows you...
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  • Is A Sliding Fifth Wheel Hitch Needed For A 2022 GMC Sierra 2500 Standard Bed
    Yes, you will want to use a sliding fifth wheel hitch since your 2022 GMC Sierra 2500 has a standard sized bed. This will help prevent the nose of your 5th wheel from coming into contact with the cab of your bed when making turns. The only exemption to this would be if your 5th wheel trailer has a rotating pin box, in which case you would need to use a fixed hitch. If your Sierra has the factory puck system then you will need the B&W Companion OEM 5th Wheel Hitch w/ Slider for Chevy/GMC...
    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...
  • Are Curt Q24 and Air RIde 5th Wheel Pin Box Compatible With 2024 GMC 3500 Short Bed
    It sounds like you might already have a Q24 from your old setup and would like to use it with your 2024 GMC 3500. The fixed Q24 # C16245 (for above bed rails) or # C37FR (for OEM prep package) will fit if you have the short bed. However, you are going to run into clearance issues. A short bed typically requires a sliding 5th wheel hitch or rotating pin box. The Q24 is not compatible with a rotating pin box so using the Curt R24 Round Tube Slider for Q24 5th Wheel Trailer Hitches # C16570...
    view full answer...
  • Underbed 5th Wheel Kit For A 2022 Silverado 3500 High Country DRW Diesel
    I do have a solution for your 2022 Chevrolet Silverado 3500, but we do not have an aftermarket puck system that will fit your truck. The only underbed kit we offer for your truck is the: -Custom Underbed Installation Kit # BWGNRK1020-5W This kit will keep your bed slick when not in use, and, allows for use with a gooseneck hitch, as well as, a 5th wheel hitch with the B&W Companion 5th Wheel Trailer Hitch # BWRVK3500-5W. This hitch has a maximum towing capacity of 20,000-lbs, and has...
    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 # BWGNRK1020-5W I've...
    view full answer...
  • Recommended 5th Wheel Hitch For A 20225 Chevrolet Silverado 2500
    Your 2022 Chevrolet Silverado 2500 already has the standard trailering package, so it comes with a 2-1/2" trailer hitch, a 4-pin, and a 7-pin wiring harness. All that is left is the 5th wheel hitch. We will have a couple of options for your 5th wheel hitch, but I am partial to the B&W options. There build quality is second to none and it is readily evident when you use the slide for their 5th wheel hitches. They have the smoothest operating slide. I recommend the following B&W 5th wheel...
    view full answer...
  • Comparing the B&W and Curt Underbed Systems for a 2022 GMC Sierra 2500
    I would be happy to compare the B&W Turnoverball System item # BWGNRK1020-5W to the Curt Underbed System item # C60642. Both of these systems are confirmed to fit the 6-3/4' and 8' bed lengths of the 2022 GMC Sierra 2500. The main advantage of the B&W over the Curt is that B&W has 5th wheel hitches made specifically for their turnover ball system. These hitches are some of the best 5th wheel hitches on the market. If you have a short bed and need a slider item # BWRVK3400-5W or the standard...
    view full answer...
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  • Recommended Fifth Wheel Hitch For 2020 GMC Sierra 3500 8 Foot Bed Without Factory Prep Package
    I recommend the B&W Companion 5th Wheel Trailer Hitch part # BWRVK3500-5W and the custom underbed installation kit part # BWGNRK1020-5W for the 2020 GMC Sierra 3500 8 Foot Bed Without factory prep package. The B&W Companion 5th Wheel Trailer Hitch features 1" thick jaw that allows for full contact with the trailer king pin to reduce rattling and chucking that you may experience with looser king pin connections. The best thing about the B&W Companion is that you will have full bed access...
    view full answer...
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  • Best Sliding 5th Wheel Hitch For Clean Bed on 2020 Chevy Silverado 2500 With or Without Puck System
    These are really good questions and we can definitely set you up with the right 5th wheel hitch for your 2020 Chevy Silverado 2500 short (also called standard) bed, but to quickly answer your question about underbed brackets, there aren't any that are universal (as nice as that would be), they are only designed to be used with specific 5th wheel hitches. That said, you do have a number of different options, which I'll list for you and then make my recommendation. 5th Wheel Hitch for 2020...
    view full answer...
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  • Are B and W Turnoverball Gooseneck Part # BWGNRK1020 and # BWGNRK1020-5W the Same
    The part numbers # BWGNRK1020 and # BWGNRK1020-5W are the exact same Turnoverball gooseneck hitch. We have two part numbers for it though as it shows up in two parts of vehicle fitguides as it works as a gooseneck hitch by itself or as the base rails for a Companion fifth wheel hitch. Our pricing sometimes fluctuates based on how certain part numbers are selling. Best solution I can recommend is go with the one that costs less!
    view full answer...
  • Offset of Stationary B&W Companion for Tailgate Clearance on 2020 GMC Sierra 2500 6-3/4' Bed
    You can adjust the B&W Companion # BWRVK3500 so that your king pin will sit 7" behind the center of the receiver on the Underbed Installation Kit # BWGNRK1020-5W for your 2020 GMC Sierra 2500. You will need to take some measurements to ensure that your 8' wide trailer doesn't contact your truck cab. We have a clearance formula which can help you determine this: (A + B) - C = Clearance A = Distance from center of fifth wheel hitch jaw to truck cab B = Length of offset (slider clearance...
    view full answer...
  • How to Choose Correct 5th Wheel Hitch to Clear Bed Sides of 2020 Chevy Silverado 3500
    You are correct that some newer pickups have taller bed sides that make it a little more complicated to ensure that your trailer remains level while you have enough clearance between the bed rails and your 5th wheel trailer. While I can't tell you exactly what you need to ensure proper clearance all around for your 5th wheel trailer and your 2020 Chevy Silverado 3500, I do have some tips for you to follow so you can be confident with your towing rig. What you need to do is park the truck...
    view full answer...
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  • Will the B&W Companion 5th Wheel and Gooseneck Fit a 2020 Chevy Silverado 2500 with Lift and Bags
    Yes, the B&W Companion 5th Wheel Trailer Hitch part # BWRVK3400-5W with Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches part # BWGNRK1020-5W will be a great option for a 2020 Chevrolet Silverado 2500 with 6-3/4 foot bed. There won't be an issue with the airbags or the lift so long as the lift is a suspension lift and not a body lift which uses spacers between the body and frame (not very common).
    view full answer...
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  • Do I Need a Fifth Wheel Slider for Towing a Grand Design Reflection 31MB with a 2020 Silverado 2500?
    There are a lot of great options for fifth-wheel hitches for your 2020 Silverado 2500. You might be able to get away with using a fifth-wheel hitch without the slider option, but for vehicles with a short bed, it is almost always recommended. Without it, you could have difficulty maneuvering the trailer on tight corners and could even damage your truck and camper if not careful. The B&W Fifth Wheel Hitch # BWRVK3770 you were looking at actually does not fit your vehicle. Instead, I recommend...
    view full answer...
  • Can I Still Use My Companion With My New Truck Or Do I Have To Start Over With A New Hitch
    It's really going to depend on what the setup is in your new GMC Sierra 2500. If you have base rails, like part # C16429-204, then your Companion # BWRVK3500 would not be able to adapt to fit the base rails and you would instead need a hitch like the B&W Patriot # BWRVK3255 or # BWRVK3270 if you have a short bed. If you have the OEM prep package have pucks in the bed of your Sierra then you'll need to swap the base of your Companion with the # BWRVB3710 or # BWRVB3775 if you have a short...
    view full answer...
  • Recommended Underbed Fifth Wheel Rails For 2021 Chevrolet Silverado 2500
    Congratulations on the new truck! I have a few options for you, but unfortunately there is not underbed 5th wheel rails available to mount the Curt A16 5th Wheel Trailer Hitch # C16120 from your Ram to your new 2021 Chevrolet Silverado 2500. There are two options, the first being installing standard above bed rails like the Curt Custom Fifth Wheel Installation Kit for Chevy/GMC Truck - Carbide Finish # C16429-204 which will allow you to use your A16 # C16120. The second option is to...
    view full answer...
  • Best Underbed Rail System Fifth Wheel Hitch Available For 2020 GMC Sierra 2500 Short Bed
    I do have an option for you but there is not an aftermarket under bed 4 puck system like what you are wanting for the 2020 GMC 2500 6-3/4 ft bed. I recommend to use the B&W Companion 5th Wheel Trailer Hitch w/ Slider part # BWRVK3400-5W with the Custom Under Bed Installation Kit part # BWGNRK1020-5W. The B&W under bed installation kit doubles as a goose neck hitch so it gives you a single hole in the bed for the B&W Companion to attach. When you are not using the Companion you can use...
    view full answer...
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  • Rail Kit to Install B&W Companion 5th Wheel Hitch on a 2020 Chevy Silverado 2500 W/O Factory Pucks
    The B&W Companion 5th wheel hitches, parts # BWRVK3500 and # BWRVK3400, are great options but since they have a long bed they'll want to use the stationary Companion part # BWRVK3500. To connect this to the 2020 Chevy Silverado 2500 you'll want to install the Custom Underbed Installation Kit # BWGNRK1020-5W. I really like this whole setup for two reasons; you can tow both 5th wheel and gooseneck trailers with this system, and you get a completely clean bed when you don't have the 5th wheel...
    view full answer...
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  • Recommended 5th Wheel Hitch for 2021 GMC Sierra 3500
    The 5th wheel hitch I recommend most often is the B&W Companion. The hitch uses massive 1 inch thick jaws which hold the 5th wheel king pin very tightly which reduces the banging and rattling from road shock experienced by the 5th wheel. B&W hitches are proudly manufactured in the US, and are protected by a lifetime warranty. The exact hitch you'll need will depend on how your truck is equipped and its bed length. Generally speaking, for a short bed truck you'll need a sliding hitch, unless...
    view full answer...
  • How Much Does The Underbed Installation Kit for B&W Companion Weigh?
    The Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches, # BWGNRK1020-5W, is approximately 130 lbs. (Shipping weight of 136 lbs. with a several pounds being packaging material.)
    view full answer...
  • Can You Add Underbed 5th Wheel Pucks on a 2021 Chevy Silverado 2500
    I do have underbed systems for a 2021 Chevrolet Silverado 2500 but there are none with the factory pucks. Instead, I recommend the Custom Underbed Installation Kit part # BWGNRK1020-5W which is compatible with the B&W Companion 5th Wheel Trailer Hitch part # BWRVK3500-5W. This combo uses a single connection so you can easily swap between fifth wheel towing, gooseneck towing, or a clean bed. The B&W Companion is one of the best hitch options on the market with easy to remove head, thick...
    view full answer...
  • Recommended Fifth Wheel Hitch for 2020 GMC Sierra 3500 Long Bed
    The B&W Companion Fifth Wheel Hitch is our most often recommended fifth wheel hitch because of how well it's constructed, how durable it is and because of the superior ride quality offered by the super-bombproof jaw system the hitch uses. The majority of complaints we receive about 5th wheel hitches are about the banging and shaking that occurs when the tow vehicle accelerates or brakes. This is caused by a poor fit between the 5th wheel's king pin and the hitch jaws. The Companion uses...
    view full answer...


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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
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Michael B
Employee Matthew E
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Matthew E
Employee Zach D
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Zach D
Employee Jonathan Y
Video by:
Jonathan Y
Employee Jacob H
Video by:
Jacob H
Employee Thomas T
Video by:
Thomas T
Employee Kyle M
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Employee Shane H
Test Fit:
Shane H
Employee Conner L
Test Fit:
Conner L
Employee David F
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Employee Ryan G
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Ryan G
Employee Ian F
Test Fit:
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Employee Kristina F
Written by:
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