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

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

Our Price: $699.00
Fifth Wheel Installation Kit

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Shipping Weight: 136 lbs
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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 fifth wheel installation kit 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. Fifth Wheel Installation Kit reviews from real customers.
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  • Reviews (37)
  • Q & A (0)
  • Photos

B and W Fifth Wheel Installation Kit

  • Below the Bed
  • B and W
  • Custom

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   (37 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:

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



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:

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:

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:

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:

Very quick shipping



by:
2021 Chevrolet Silverado 3500

Shipping was fast. Fairly easy to insta ll



by:

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



by:
2022 Chevrolet Silverado 2500

I like the videos on installing what your purchasing.



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:
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:
2022 Chevrolet Silverado 2500

fast to fill order and ship.



by:
2020 Chevrolet Silverado 2500



by:


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Show More Reviews

See what our Experts say about this B and W Fifth Wheel Installation Kit

  • 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!
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  • 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.)
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  • Is There a Base Rail Kit Available for a 2020 Chevrolet Silverado 2500
    The only option that I can offer you now (September 2019) to obtain above bed industry standard base rails on a 2020 Chevrolet Silverado 2500HD is by using the Custom Underbed Installation Kit part # BWGNRK1020-5W with the Curt X5 5th Wheel Base Rails Adapter part # 16310. That said, this is not a bad option by any means as it allows for you to tow a gooseneck trailer if needed and you would have a clean truck bed with the adapter removed. If you wanted to use an existing 5th wheel hitch...
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  • What Drill-Free 5th-Wheel Hitch and Brackets do You Recommend for My 2022 Chevy Silverado 2500?
    For a great 5th-wheel hitch and drill-free brackets on your 2022 Chevy Silverado 2500 with an 8-foot bed without OEM prep, I recommend the B&W Companion # BWRVK3500-5W along with the Custom Underbed Installation Kit # BWGNRK1020-5W. The Companion comes with dual-jaws that have a more secure connection and a quieter functionality than sliding jaws. Also, the Companion comes with three height settings to make the trailer more level. It is also 100% made in the U.S.A. As far as the installation...
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  • 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...
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  • 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...
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  • Recommended FIfth Wheel Hitch For A 2022 Chevrolet Silverado 3500
    When installing a fifth wheel hitch on your 2022 Chevrolet Silverado 3500 I recommend The B&W Companion 5th Wheel Trailer Hitch w/ Slider - Dual Jaw - 20,000 pounds # BWRVK3400-5W and The Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1020-5W. This hitch is only confirmed to fit the 6-1/2 foot bed. The Companion Hitch has a weight capacity of 20,000 pounds and has a vertical load limit of 5,000 pounds. The hitch has 3 height settings 17 inches to...
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  • Best 5th Wheel Hitch for a 2020 Chevrolet Silverado 3500 Without Factory Prep Package
    The best 5th wheel hitch option for a 2020 Chevrolet Silverado 3500 without the factory prep package is without a doubt the B&W Companion 5th Wheel Trailer Hitch part # BWRVK3400-5W which uses the Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches part # BWGNRK1020-5W. The B&W Underbed Installation Kit provides you with some really great features which includes an empty truck bed with the hitch removed, drill-free installation in regards to the frame, and doubles...
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  • Best 5th Wheel Hitch for 2020 Chevy Silverado Short Bed without Factory Prep Package
    The best 5th wheel hitch available for the new 2020 Chevy Silverado 2500HD with the 6.9 foot bed and without the factory prep package is the B&W Companion Slider # BWRVK3400-5W along with the Installation Kit # BWGNRK1020-5W. The B&W Companion line of hitches are considered by many to be the absolute best on the market. This is in large part due to its heavy-duty construction that includes 1 inch thick dual jaws that provide an incredibly secure connection to the trailer that not only...
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  • 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...
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  • Switching From A Curt Turnover Ball Hitch To A B&W Companion 5th Wheel Trailer Hitch
    The hole should be centered in the bed of your 2020 Chevy Silverado 3500 so switching to the Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1020-5W so that you can use your B&W Companion 5th Wheel Trailer Hitch - Dual Jaw - 20,000lbs Item # BWRVK3500-5W should be no issue.
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  • Recommended Slider 5th Wheel Hitch and Gooseneck for a 2020 GMC Sierra 2500 with 6.6" Bed
    The B&W Companion 5th Wheel Trailer Hitch with Slider part # BWRVK3400-5W with Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches part # BWGNRK1020-5W would be the perfect option for a 2020 GMC Sierra 2500 with 6.6" bed as it allows for both fifth wheel and gooseneck towing. It also offers the best product in each of these respective categories. The Companion has thick dual jaws for a tight grip on the kingpin which provides a smooth ride and the cam-action handle...
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  • 5th Wheel and Gooseneck Hitch for 2024 GMC Sierra 2500 Short Bed Without Puck System
    The best option is to start by adding the Custom Underbed Installation Kit for B&W Companion # BWGNRK1020-5W. This will give you a gooseneck hitch that allows for full bed access. This hitch uses the turnoverball which stores upside down when not in use. It will also allow you to use the B&W Companion 5th Wheel Trailer Hitch # BWRVK3400-5W. The Companion is a well built and reliable 5th wheel hitch. It features 1" thick dual jaws for a solid connection as well as a non-binding cam-action...
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  • Gooseneck and 5th Wheel Hitch for 2024 GMC Sierra 2500 Long Bed Without Puck System
    You want to start by adding the Custom Underbed Installation Kit for B&W Companion # BWGNRK1020-5W. This will give you a gooseneck hitch that allows for full bed access. This hitch uses the turnoverball which stores upside down when not in use. It will also allow you to use the B&W Companion 5th Wheel Trailer Hitch # BWRVK3500-5W. The Companion is a well built and reliable 5th wheel hitch. It features 1" thick dual jaws for a solid connection as well as a non-binding cam-action latch handle....
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  • 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...
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  • Will The Reese Elite Underbed Mount Fit A 2021 Chevy Silverado 2500
    The Reese Elite RP30061 unfortunately isn't a fit for your 2021 Chevy Silverado 2500 so the only under bed mount that you'll be able to use would be the Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1020-5W. This would allow you to use a B&W Companion like part # BWRVK3400-5W to haul your 5th wheel with.
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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).
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    Image 1 for
  • Does Truck Bed Need to be Removed to Install B&W Companion Underbed Kit # BWGNRK1020-5W
    When installing the Custom Underbed Installation Kit # BWGNRK1020-5W for the B&W Companion 5th Wheel Hitch # BWRVK3400-5W on your 2020 Chevy Silverado 2500 the truck bed does not need to come off. In the installation manual it just states that the installer needs to be positioned under the truck bed in the area of the rear axle. Lifting the truck will make this process easier. To prepare the truck for installation the spare tire and shield, along with the heat shield above the rear axle...
    view full answer...
    Image 1 for
  • Recommended Underbed 5th Wheel Towing Kit for 2021 GMC Sierra 2500 Short Bed without OEM Pucks
    I may have a solution for you, but there are currently no OEM style prep package kits available for your 2021 GMC Sierra 2500. Since you would likely need a hitch that has legs designed for the newer GMC prep package anyways, if you don't already own one, you might want to consider the B&W Turnoverball System # BWGNRK1020-5W. The Turnoverball system will give you the same clean truck bed that you would get with the GMC OEM prep package. The hitch you would need to work with the Turnoverball...
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  • Recommended 5th Wheel Hitch for 2022 Chevrolet Silverado 2500 8 Foot Bed Without OEM Prep Package
    For your 2022 Chevrolet Silverado 2500 I recommend the B&W Companion 5th Wheel Trailer Hitch - Dual Jaw # BWRVK3500-5W. This hitch uses a rail free design allowing for full access to your truck bed when it is removed. It features a cam-action latching handle that helps prevent binding and is simple to release on uneven terrain. It has a gross towing weight of 20,000 lbs and is made in the USA. In order to use this hitch you are correct, you will need to install some stuff. Specifically,...
    view full answer...
  • How Much Does The B&W Companion Slider And B&W Turnoverball Gooseneck Hitch Weigh
    Absolutely! The B&W Companion Slider Gooseneck-to-5th-Wheel Trailer Hitch Adapter # BWRVK3400 weighs in just under 280lbs, and the Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1020-5W weighs in at just over 130lbs. This is a great combination that is confirmed to fir your 2021 Chevrolet Silverado 2500, as B&W is known for their high quality towing products including this combination that will allow you to tow a gooseneck or 5th wheel trailer, and...
    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...
  • Determining The Correct Size Truck To Haul A 10K Fifth Wheel Trailer
    At a minimum you would need a 3/4 ton truck to haul your 5th wheel with a dry weight of 10,450lbs. Personally I recommend going with a 1 ton just to reduce wear and tear your truck's suspension, driveshaft, and tires. One thing you will want to keep in mind while looking at trucks is the rear pinion gearing. The higher the number the higher the towing capacity will be. Depending on the brand you go with this information can be looked up on their respective websites. The next thing to...
    view full answer...
  • Recommended Under Bed 5th Wheel Installation Kit for a 2022 GMC Sierra 2500
    The Curt Ball and Safety Chain Loop Kit item # C60692 is for the GM factory puck system that comes with Chevy Silverado's and GMC Sierra 2500's and 3500's. It only includes the gooseneck ball and safety chain holders. This under bed hitch is only available as a factory option. To install an under bed hitch in your 2022 GMC Sierra 2500, you will want the Custom Underbed Installation Kit item # BWGNRK1020-5W. This will provide you with a gooseneck platform that is compatible with B&W Companion...
    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
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Dustin K
Employee Chris R
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Chris R
Employee Wilson B
Updated by:
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Employee Michael B
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