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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

Item # BWGNRK1116-5W
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Fifth Wheel Installation Kit

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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 BWGNRK1116-5W or order online at Free expert support on all B and W products. Guaranteed Lowest Price 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 (18)
  • Q & A (0)
  • Photos
  • Why etrailer?

B and W Fifth Wheel Installation Kit - BWGNRK1116-5W

  • 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.


  • 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.

Operating Handle

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).

GNRM1117 B and W Turn Over Ball Gooseneck Hitch Custom Installation Kit

GNRC816 B and W Turn Over Ball Under Bed Gooseneck Hitch Center Section

Replaces B and W BWGNRK1117-5W

Installation Details BWGNRK1116-5W Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Reviews

Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches - BWGNRK1116-5W

Average Customer Rating:  4.7 out of 5 stars   (18 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.

2022 Ford F-350 Super Duty

The box came taped together and falling apart the parts had no protection from each other. The powder coat is scratched, marred and chipped now I have to prime and paint all the parts before I install them. B&W needs to package there stuff better. I planned to paint the parts for an extra layer of protection as I live in the north east. Now that the powder is chipped I have to do a professional paint job too make this hitch last. Unfortunately B&W is still the best hitch for my application so I’ll buy another one again but I don’t like having to spend a day prepping parts and painting after I paid a premium price for what was supposed to be a premium product.

I will have our Customer Service team reach out to you.
-- Etrailer Expert Jenny N - 05/12/2022

by: 04/11/2022
2020 Ford F-250 Super Duty

Mu teenage son and I (I have a bad back so not moving to well at the moment) installed the BW underbid kit on 2020 Ford F250 4x4, FX4 SRW, Crew Cab with no issues. We followed instructions and watched video and pretty easy install. On my truck there is No heat shield near spare tire to remove prior to install and we did not remove the exhaust nuts to lower pipes and had no issue getting all brackets installed. We did it on driveway with truck rear tires on truck ramps. Took about 5 hours from start to finish with some breaks in between. I just placed two 8' 2x4's across bed of truck when you get to part using a ratchet strap to lift into 4" hole in bed tightly. works great. High high quality parts........Thx etrailer


Works like a champ. Install was a lot of work and the rear section will block the bolt to remove the right rear shock so make sure you either cut a notch out or plan on keeping your shocks. Torquing to spec gets very tricky with several of the bolts but can be done with a little patience. Operation is very smooth and the hitch itself is bombproof

2017 Ford F-250 Super Duty

Awesome hitch!! Awesome service and communication from etrailer . Very helpful videos of installing your products. I highly recommend buying from etrailer. In stock with timely shipping. I received my hitch in two days.


Excellent i installed my self im 74 years old ease of fit and complete thank you

Perfect no problems
Robert - 01/17/2022
Perfect no problems
Robert - 01/17/2022

Ford F-350 Super Duty

Works well. Tough install. Best to have another set of hands. Better still if you can do it on a lift. Dont know if all vehicles present same challenges to the install as our F-350 diesel long bed. Most forward outboard drivers side bolt hard to get in or torque. Pretty straightforward though. Took me a couple of hours one day and finished up couple of hours next day. Could have opted for the Ford factory kit, but it required removing the bed and the accompanying labor cost.

2018 Ford F-250 Super Duty

Easy install, fit as advertised.


Took awhile to install by myself but works great. Never have any issues with it.




Item Arrived in Good Condition


Installed myself. A little tight on the driver side, but I got it installed with no problems


That was the fastest item I have ever ordered and received. And everything came to me in great condition can't wait to install it


Excellent product. Super easy install , just a few wrenches and sockets! Couple hours and done.


Works fine, good design, was able to install without lifting the bed. Difficult to torqueall bolts, but is installed securely.


Excellent service.
Product was as described.
Delivery exactly as projected when ordering.
Thank you very much for your Honest business
I Will buy everything I can from you all in the future.


2022 Ford F-350 Super Duty



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Info for this part was:

Employee Lindsey S
Edited by:
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Employee Jeff D
Installed by:
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Employee Jameson C
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Video by:
Joshua S
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