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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

Part Number: BWGNRK1108-5W
In Stock
$599.00
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 BWGNRK1108-5W 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 (36)
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1999 Ford F-350 Super Duty - Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches

  • 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).



GNRM1108 B and W Turn Over Ball Under-Bed Rail Kit

GNRC800 B and W Turn Over Ball Center Section

Installation Details BWGNRK1108-5W Installation instructions

California residents: click here


Customer Satisfaction Score:


Customer Reviews

Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches - BWGNRK1108-5W

Average Customer Rating:  4.8 out of 5 stars   (36 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:

well worth the money. this hitch is the best that money can buy, best ratings, best safety, best performance hands down. I now have two ways to tow, gooseneck and traditional 5th wheel receiver, and a third if you count the class III rear receiver hitch under the rear bumper. all bases have been covered for me.

Adam

8/23/2023

its been a year and still going strong. Ive taken many trips and the hitch has held strong and reliable. I couldnt ask for more, except... it is heavy, so removing the base unit to utilize the bed is troublesome if youre removing it yourself like I have to. Simple solution though, I bought a gantry crane so now all i do is drive under the crane, hook up to the hitch and remove with a winch. Easy peasy!



by:

Easy to install and nice to have it hidden under the truck bed. Converted 5th wheel over to a gooseneck and couldn't be happier with the ride now.



by:

This was a perfect bolt on for my 04 F350 6.0 CCLB I have duals on mine and I had to unbolt the exhaust the whole way up to the transmission crossmember so I had room to drill etc over the driver side tailpipe



by:

A one person install was a challenge, but everything matched up perfectly! Love the final look and performance! Instructions were great and detailed, videos were definatly necessary.



by:

I will update once we open up the boxes but the one box is damaged. Hoping everythin is there. Will update but once my husband opens the box.

Etrailer Expert

Katrina D.

8/21/2023

Have you had a chance to check out the product to see if there is any damage?



by:

I have received this package, but have not yet installed it. It was recommended by a reliable friend, and I anticipate it will perform as advertised.

Adam at E-Trailer did an outstanding job confirming the correct package for my truck, arranging delivery, and specifying the other equipment I will need to tow my new trailer. Thank you Adam!



by:
2006 Ford F-250 Super Duty

Heavy Duty. Very easy install.



by:
2009 Ford F-250 Super Duty

This is an excellent product. It was recommended to me by more than one person who were both huge fans of it. Installation is a lengthy process. and I had a little trouble with interference with a brake line, but that is nothing against the product itself. Very high quality, and very good instructions for installation. Love how it has so little impact on the usability of the truck bed.



by:

Items came really fast from order date.



by:
2003 Ford F-250 Super Duty

I had a short box 2003 F250 with a Hidden Hitch. I wanted to purchase a B&W Companion Sliding Hitch to accommodate the clearance issue between the front of our first 5th wheel camper which was a Palamino Puma 5th wheel and the cab of the truck. The truck had come with a Hidden Hitch goose ball system which I had never used. The salesperson at etrailer informed me that the B&W Companion Slider Hitch would not work with the Hidded Hitch Gooseball set up. I was disappointed to hear this, but I really had no other options. After removing the old Hidden Hitch system and installing the new B&W Gooseball hitch I could not believe how much heavier and substantial this hitch was! I then received and installed the new B&W Companion Slider Hitch. This sliding hitch was the only real option for me and after looking around at other brands of 5th wheel hitches, I know that B&W hitches Made in the USA with their Lifetime Warranty are simply the Best!



by:

One year later, still as solid as when I put it in, no creaks or odd noises. Would recommend if you're on the fence about it.



by:
2007 Ford F-250 and F-350 Super Duty

Excellent products. Both hitches (goose and 5th) came as described and were built very well! B&W does not skimp on materials. At first, thinking about how the companion secures to the gooseneck I was skeptical about the strength of the to two working in tandem. Both work flawlessly, are easy to use and the companion comes apart to reduce weight when putting in and out of truck. Timely shipping from e trailer. Best price I could find. Easy install.



by:

Excellent hitch. Use it with the companion 5th wheel hitch for a rock solid platform. Install was easy, fit finish was great. Awesome American made product.



by:
2006 Ford F-250 and F-350 Super Duty

Ordered on a Thursday and received it the following Tuesday so the shipping is fast. The instructions are short and to the point with only 2 or 3 pictures so you have to use your head to install it. Very easy installation.

Etrailer Expert

Mike L.

11/27/2018

If you click the provided link, you can see an install video showing the hitch being installed on a 2007 Ford F350.



by:

Assistance on live chat to order product was extremely helpful. The hitch and bracket were exactly what was advertised and it was here in record time. Great Experience. I will definitely do business with etrailer.com in the future.



by:

Installed easy enough just read your instructions and watch the online videos if you can. Customer service is unbelievable. They were the most helpful people I think I've ever done business with and just plain nice. Thanks etrailer



by:
2002 Ford F-250 and F-350 Super Duty

High quality under bed turnover hitch. Instruction video a big help.



by:

Installs perfectly but I did have to remove my airbags to install it. Hoping to find a way to put them back in.



by:
2001 Ford F-250 Super Duty

Excellent product and service. Really appreciate the install videos.



by:
2000 Ford F-250 and F-350 Super Duty

Not installed but it showed up on time thanks etrailer



by:
2001 Ford F-250 and F-350 Super Duty

Very well made hitch and easy install. Will buy again when needed.



by:

Works well, easy to install, very well built, have had absolutely no problem. I would recommend this setup for anyone wanting complete use of the bed when not towing.



by:
2004 Ford F-250 and F-350 Super Duty

The install is pretty easy if you have a friend to help. I'm a very mechanically inclined guy and it still took a couple of hours to get this part of the install done but my end result is perfect.



by:

Great product, shipped promptly, all items correct, and excellent pricing. Very happy with this purchase!



by:

Easy to install & easy to use.


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Show More Reviews

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

  • Will B and W Turnoverball Rail Kit Fit 2004 Ford F-250 with Air Bag Kit
    Yes, the B and W Turnoverball gooseneck hitch part # BWGNRK1108-5W that fits your 2004 Ford F-250 would fit with the air bag suspension kit you have.
    view full answer...
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  • Will the Convert-A-Ball Adapter Work w/ a B&W Gooseneck Hitch?
    Yes, it will. The Convert-A-Ball Cushioned 5th-Wheel-to-Gooseneck Adapter item # CAB-C5G is compatible with the B&W Custom Underbed Installation Kit item # BWGNRK1108-5W. This kit is custom fit for your 2008 Ford F-250.
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  • Recommendations for Gooseneck and Fifth Wheel Hitch on 1999 Ford F-350 Short Bed
    The best option to tow both a gooseneck and 5th-wheel trailer with your 1999 Ford F-350 with 6-3/4 foot bed is to use the B&W Companion 5th Wheel Trailer Hitch w/ Slider # BWRVK3400-5W along with the underbed installation kit # BWGNRK1108-5W. This is a great sliding 5th-wheel hitch that will give you an additional 12 inches of clearance for making sharp turns with your truck's shorter bed. The hitch has a gross towing weight of 20,000 pounds and vertical load limit of 5,000 pounds. The...
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  • Will a B&W 5th Wheel Trailer Hitch Fit a 2006 Ford F-350 with Firestone Air Bags 2400
    Since the B&W installation kit # BWGNRK1108-5W also uses a 3/4 inch bolt in the center hole that Firestone Ride-Rite kit # F2400 uses, and because the hitch brackets mount to the outsides of the frame and the air bag brackets on the insides of the frame, these 2 components will work together. Installation kit # BWGNRK1108-5W is correct for a 2006 Ford F-350 long bed or short bed. Hitch # BWRVK3500-5W is the correct hitch for a long bed. For a short bed use # BWRVK3400-5W. Once the hitch...
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  • Is a Sliding 5th Wheel Hitch Needed to Tow with a 2007 Ford F-350 Diesel with Short Bed
    Although some people can make it work, for any pickup with a bed less than 8' we always recommend going with a sliding 5th wheel hitch. This allows you to safely make sharp turns without your 2004 Forest River Cedar Creek making contact with the cab of your 2007 Ford F-350. You actually don't need a capture plate unless your pin box has a rotating turret, like a Sidewinder, or you have an automatic sliding 5th wheel hitch. If you have a normal pin box then no special capture plate is required. If...
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  • Air Lift Air Bag Kit that Fits 2005 Ford F-250 with B and W Gooseneck Hitch
    The Air Lift LoadLifter kit part # AL88397 which is a confirmed fit for your 2005 Ford F-250 is perfectly compatible with the B and W Gooseneck hitch # BWGNRK1108-5W.
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  • Recommended Sliding Hitch For A 2005 Ford F-250 Super Duty With B&W Gooseneck Hitch
    The Demco Hijacker Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Underbed - 18,000lbs # DM8550022 does not attach via gooseneck hitch and instead attaches using base rails like # DM8551000 or # DM8552002-71. For you to be able to use this hitch you would need to remove the B&W Gooseneck Hitch # BWGNRK1108-5W you currently have in the bed of your 2005 Ford F-250 Super Duty and install a base rail system instead. If you want a compatible sliding hitch for your gooseneck hitch...
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  • Recommended Under Bed 5th Wheel System for a 2008 Ford F-250
    We have something similar but there is no way to put a prep package in your 2008 Ford F-250. Instead, you will want the Custom Underbed Installation Kit item # BWGNRK1108-5W. This system installs beneath your bed and gives you a square gooseneck receiver which is a mounting point for the B&W Companion item # BWRVK3500-5W. These two parts combined will give you a 20,000 lbs towing capacity. When you are not towing your 5th wheel trailer you can remove the Companion hitch and have a completely...
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  • Can BandW Underbed 5th Wheel Install Kit # BWGNRK1108-5W Fit 2010 F-350 Dually with OEM Bedliner
    If your F-350 OEM bed liner is the drop-in type, then it will have to be trimmed to allow for any 5th wheel installation. Your tonneau cover should pose no issue, however. Spray-on bed liners are compatible with 5th wheel installations but the drop-in type has to be trimmed for installing the BandW Companion hitch # BWRVK3400-5W. Metal-to-metal contact is necessary for safe installation of a 5th wheel. This is covered in the written instructions from BandW, which are attached. This hitch...
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    Image 1 for
  • Can AirLift Air Bags and a B&W Turnover Ball Gooseneck Hitch be Installed on a 2005 Ford F-250
    I do have an option for you. However, the AirLift air bag kit # AL88291 is designed to work only on trucks with a B&W fifth wheel hitch 1105 or 1199R, both of which are obsolete. Instad, take a look at the Air Lift LoadLifter 5000 Air Helper Springs # AL57397 (2WD) or # AL57398 (4WD). These kits are 100% compatible with your Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1108-5W. I confirmed this with my contact at Air Lift.
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  • 5th Wheel Hitch Needed to Fit with Air Lift LoadLifter 5000 # AL88398 on a 2008 Ford F-250
    The Under-Bed Rail and Installation Kit # RP30073 may fit with the Air Lift LoadLifter 5000 # AL88398 according to my contact at Air Lift but you may have to do some drilling into the 5th wheel brackets. I don't advise doing this so instead I recommend going with the B&W Gooseneck Kit # BWGNRK1108-5W which already has a hole in the bracket where the bolt from your air bag kit will fit. This will not only allow you to tow a gooseneck trailer, but you can still tow a 5th wheel trailer with...
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  • Fifth Wheel Hitch for B&W Turnoverball Gooseneck Rails in 2008 Ford F-350
    The B&W Turnoverball Gooseneck # BWGNRK1108-5W also serves as the underbed rails for the B&W Companion and does not fit other fifth wheel hitches. Don't let the lack of options dissuade you though because this is the fifth wheel hitch I would recommend for you even if you did not already have the base rails because the Companion is considered by many to be the highest-quality fifth wheel hitch available and height should not be an issue because it can adjust from between 16-1/4" to 18-1/4"....
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  • What is the DIfference in The B&W Goosenecks Part # BWGNRK1111 and BWGNRK1108
    The difference in the B&W Turnoverball Underbed Gooseneck Trailer Hitch w/ Custom Installation Kit part # BWGNRK1108 and part # BWGNRK1111 is what vehicles they fit. Part # BWGNRK1108 is designed for the 1999-2010 Ford F-250, F-350 and F-450's and part # BWGNRK1111 is designed for the 2011-2016 Ford F-250, F-350 and F-450's without the OEM Prep Package. Both are designed with the same center section and can be paired with the B&W companion Fifth Wheel with part # BWGNRK1108-5W and part...
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  • Installation of B&W Turnoverball Gooseneck on 2001 Ford F-350
    The Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1108-5W is a great gooseneck system and is also a really nice combination with the B&W Companion 5th Wheel Trailer Hitch # BWRVK3500-5W on your 2001 Ford F-350. For this installation, you will need to slightly lower the exhaust and remove the heat shield as you mentioned. You will reinstall the heat shield so there won't be any issues with heat transfer. I double checked this with the manufacturer. Because...
    view full answer...
  • Can I Use a Sliding B&W Companion Hitch for a Turnover Ball System w/ a Turning Point Pin Box?
    Congrats on the new trailer! If you lock out the Turning Point pin box so it does not rotate you can use the B&W Companion 5th Wheel Trailer Hitch w/ Slider item # BWRVK3400-5W. You will have plenty of clearance when making turns with your short bed 2008 Ford F-250. This will be a great set up for both a 5th wheel and a gooseneck hitch. You are correct you can not use the fixed Companion item # BWRVK3500 and the Turnover ball system item # BWGNRK1108-5W with a rotating pin box. The square...
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  • Difference Between B&W BWGNRK1108 and BWGNRK1108-5W Turnover Ball Gooseneck Hitch
    There is no difference between the two. We have two similar but different part numbers because we market the # BWGNRK1108 as a gooseneck hitch and the # BWGNRK1108-5W as the mount for the # BWRVK3400 sliding version of the B&W Companion 5th wheel hitch for short bed trucks or # BWRVK3500 for long bed trucks. By having two different part numbers for the identical part, the hitch is easier to Google search for. If you'd like to install a 7-way trailer connector in the truck bed so you...
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  • 5th Wheel Install Kit & Hitch for a 2018 Ford F-150 w/5-1/2 Foot Bed & Trailer w/Revolution Pin Box
    You would need to go with an above bed rail system because there are no compatible under bed 5th wheel mounts for the 2018 Ford F-150 with 5-1/2 Foot bed. For an installation kit I recommend Reese custom kit # RP56034-53. This kit is the easiest to install because the connections between the rails and frame brackets are all on the outboards sides of the frame where they are easier to reach. For a 5th wheel hitch the Reese 16K # RP30047 is the tried and true workhorse. It has been around...
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  • 5th Wheel Base Rail Adapter for Use with B&W Turnoverball Gooseneck Hitch in 2008 Ford F-450
    If you have a B&W Turnoverball gooseneck hitch/5th wheel install kit # BWGNRK1108-5W in your 2008 Ford F-450 Super Duty you can install an industry-standard 5th wheel hitch like your Reese 16K by adding an adapter. Curt makes their X5 5th Wheel Base Rail Adapter # 16310 for this purpose. The X5 drops right in to your B&W turnoverball hitch and provides the equivalent of ISRs ( industry-standard rails) that will accept any brand of 5th wheel hitch designed for ISRs. if you need a wiring...
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  • How to Transfer B&W Companion 5th Wheel Hitch For Pucks to 2000 F-350 Without Puck System
    Thanks for that info, and yes, you can transfer the B&W Companion OEM 5th Wheel Hitch for Ford Super Duty Prep Package # BWRVK3305 into your F-350 without the puck system, you will simply need a new base, as well as the mounting base for your truck. So here is exactly what you will need, depending on if you have a long bed (fixed base) or short bed (sliding base): - Long Bed: Replacement Base for B&W Companion 5th Wheel Trailer Hitch # BWRVB3500 or - Short Bed: Replacement Slider Base...
    view full answer...
  • Is B&W Companion Compatible With Other Gooseneck Hitches?
    The B&W Companion mounts in the B&W Turnoverball that doubles as a gooseneck hitch and will not mount on other goosenecks. B&W is a very high-quality hitch and you are right to prefer them but the only way to install a Companion is to remove your current gooseneck and put in the Custom Underbed Installation Kit for B&W Companion # BWGNRK1108-5W and add the Companion Slider # BWRVK3400-5W.
    view full answer...
  • Recommended Gooseneck And 5th Wheel Hitch For 2001 F-350 With 8 Foot Bed
    Based on your photos, I can not identify the system you have and it appears that it was a custom job that doesn't work with current options. My recommendation is to remove the customized system and start over so you know that all of your parts are compatible. For your 2001 Ford F-350 with 8 foot bed, I recommend the Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1108-5W. This will give you the gooseneck hitch you want. This gooseneck system is...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Reese or B7W Hitch To Fit Underbed Rail Kit of 2009 Ford F-350
    If your 2009 Ford F-350 had the Reese Elite rail kit part # RP30073 installed in the bed the B and W Companion part # BWRVK3300 that you referenced would fit it and work well. But since you said "turnoverball" and that's the rail design from B and W you might actually have the rail kit part # BWGNRK1108-5W instead which would allow you to install the Companion hitch part # BWRVK3500 instead. If you are unsure send me a picture of what you have in your truck bed and I'll be able to tell...
    view full answer...
  • Firestone Air Bag Recommendation for 2008 Ford F-350 with B&W Companion 5th Wheel Trailer Hitch
    The B&W Companion 5th Wheel Trailer Hitch, # BWGNRK1108-5W, mounts to the outside of the frame on the 2008 Ford F-350. The Firestone Ride-Rite Air Helper Springs, # F2550, mount to the inside of the frame so these air bags can be used in conjunction with the B&W Companion 5th Wheel Trailer Hitch, # BWGNRK1108-5W.
    view full answer...
  • What Gooseneck Hitch for 2002 Ford F-250 Can be Used with Companion Hitch
    A Companion fifth wheel hitch has to be used with a B and W Turnoverball gooseneck hitch and cannot be used with a Curt like the one you referenced. For your 2002 Ford F-Series Super Duty you would want to use the gooseneck hitch part # BWGNRK1108-5W so that you could use a slider Companion like part # BWRVK3500.
    view full answer...


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Employee Chris R
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Employee Lindsey S
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Employee Jeff D
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Employee Kristina F
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