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  1. Trailer Hitch Ball
  2. B and W
  3. Gooseneck Hitch Ball
  4. 2-5/16 Inch Diameter Ball
  5. Turnover Ball
  6. 20000 lbs GTW
4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches

4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches

Retail:$187.99
Our Price: $165.00
You Save: $22.99
Trailer Hitch Ball
Shipping Weight: 19 lbs
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4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches 20000 lbs GTW BWGNXA4085
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Designed for use with B&W's Turnoverball gooseneck hitch, this ball extender moves the pivot point of your trailer 4" rearward to provide additional cab clearance. Great Prices for the best trailer hitch ball from B and W. 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches part number BWGNXA4085 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (267)
  • Q & A (0)
  • Photos

B and W Trailer Hitch Ball

  • Gooseneck Hitch Ball
  • 2-5/16 Inch Diameter Ball
  • Turnover Ball
  • 20000 lbs GTW
  • Powder-Coated Steel
  • B and W
  • 4 Inch Offset

Designed for use with B&W's Turnoverball gooseneck hitch, this ball extender moves the pivot point of your trailer 4" rearward to provide additional cab clearance.


Features:

  • Extension provides 4" of additional space between your truck's cab and your gooseneck trailer
  • Works with all B&W Turnoverball gooseneck trailer hitches except for the following:
    • For Toyota Tundra applications use BWGNXA4585
    • For Dodge Ram 1500 applications use BWGNXA4685
  • Square ball base prevents ball from turning in hitch during hookup
  • Powder coated steel resists corrosion
  • Made in the USA


Specs:

  • Ball size: 2-5/16"
  • Offset: 4"
  • Weight capacity: 20,000 lbs
  • Vertical load limit: 5,000 lbs
  • Distance from center of locking pin hole to bottom of square base: 2"


4


GNXA4085 B and W Turn Over Ball Gooseneck 4" Hitch Ball Extender

Item # BWGNXA4085




California residents: click here


Customer Satisfaction Score:


Customer Reviews

4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches - BWGNXA4085

Average Customer Rating:  4.8 out of 5 stars   (267 Customer Reviews)

Designed for use with B&W's Turnoverball gooseneck hitch, this ball extender moves the pivot point of your trailer 4" rearward to provide additional cab clearance.

by:

This product is exactly what I needed to offset our new “Reese Goose-box” pin box to better accommodate the clearance for the fuel tank and tool box in the bed of our truck. Thanks to the knowledge of the “etrailer” staff (specifically Stacy) she went the extra mile, taking additional time to assure all the products I needed were perfect for my application. Thank you Stacy for all your assistance and patience with my order.
P.S. I added the yellow strip down the center of the pin box to help guide me when hooking up. Perhaps “Reese” will add this little idea to their future pin boxes as an option?

Dean

10/5/2022

Great

Dean

6/13/2023

This product works great and allows so much more usable room in the bed than our previous 5th wheel hitch which, was becoming too heavy to remove frequently when needing to haul materials.

Etrailer Expert

Mike L.

9/6/2023

@Dean We're happy to hear that the # BWGNXA4085 offset gooseneck ball is working well for you.


by:

I have a 8ft bed but when hooking up and working around the truck with camper hooked up it was difficult... with this ball I can open all the front Compartments. Pulling the toyhauler feels better to.. we have the goosebox 20k on the toyhauler.



by:

I have used this offset ball in the B&W gooseneck hitch I installed in my regular box 2022 Chevy 3500 to tow our 13K GVWR fifth wheel with Reese Goosebox for over six months now and I love it! The offset ball combined with the placement of the hitch in a 2020+ Chevy means I can turn a full 90 degrees if necessary. And fully loaded, our truck is still within specs on all weight ratings, including rear axle weight.



by:

The 4 inch offset ball is very heavy made. I have no concern hauling a trailer with this.



by:

After installing the Gen Y Executive gooseneck hitch on our 5th wheel camper I needed more clearance in my 2016 GMC 6.5' truck bed. I already have the B&W Turnover hitch on my truck and this gave me 4" offset to the rear of my truck and 2" of lift. After 1 year of using this setup I am very pleased with the ride and towing.



by:

Etrailer is awesome! They always have what I need, great prices, great customer service, great product, just like the gooseneck extension Ijust received. Shipping was amazingly fast too.



by:

The test will be when I hook up a trailer. My customer service was fantastic.



by:

I haven’t used it yet, I am concerned about it being about 3/4” off the bed. I am thinking about pupping a spacer between it and the bed. Worried about it bending

Etrailer Expert

Sierra K.

3/17/2021

Thanks for your review. This gap is normal since it fits a few different vehicles. It is safe and should not bend. You can put a washer there for peace of mind, but as long as you do not go over the weight capacity, it is not necessary.



by:

Love how well this works. There are some offsets that are bigger but this worked well. I have a 5th wheel that has a gooseneck adapter and this gives me in my short bed truck a little bit more turning radius.



by:

Great website. Easy to navigate and order prompt shipping



by:

High Quality, Heavy duty 4” offset ball mount that works perfectly with the B&W turnover gooseneck hitch system. Adapted my 30’’ fifth wheel trailer with the Ranch regular gooseneck adapter—now no more heavy lifting and lots more room in the truck bed.



by:

Great product and what I needed for a mega cab to pull Rv camper with goose box



by:

My order was lost in transit and replaced immediately, no questions asked. Thank you!



by:

Fast shipping... The B&W 4in extension hitch ball is really good. I have used it a couple of times works great wish I had gotten one sooner. Problem I had was in a newer 2500hd the gooseneck was to close to toolbox and really close to rear window. With this extender ball problem is solved...



by:

This product works great for short bed truck. This product gives you more turning radius with out knocking your back window out.
Truck is a 2500 Ram, pulling 42ft gooseneck.



by:

Great product, and perfect fit. Gave me the perfect offset that I needed to keep my trailer from hitting the cab. Highly recommend if you have a short wheel base truck and pulling a deck over gooseneck trailer!



by:

BW always excellent quality.



by:

Welds are nice and clean. Does exactly what it’s designed to do.



by:

Well made, solid and fits good.



by:

this offset ball has helped towing my fifth wheel, keeping it away from the truck cab when turning or backing tight. I would highly recommend this.

Carlos G.

1/16/2022

Has been extremely great

Carlos G.

1/17/2022

A year has passed, and I rely and enjoy using this product, I never tow without it. For those campers that doubt their tight turns and backing maneuvers, this product will put you at ease.



by:

Used with Ram 2500 short bed . Great product, works perfect. The offset allows cab and tool box clearance while pulling our 5th wheel camper. I have used etrailer with other purchases . They have always delivered on time and have provided good customer service. Thanks etrailer



by:

Strongly built and helps provide needed clearance.

Austin

4/21/2023

Ball is still in great shape and has performed as described. It has helped improve my turning capabilities greatly!



by:

Works perfectly!!!

Scott

8/25/2023

Offset ball has been great, no issues and very well built quality unit



by:

Awesome hitch and haven’t smashed my back window. Also love the customer service at etrailer! I will definitely be a returning customer for my future trailer needs.



by:

I have a 2005 F 250 crew cab short box. I changed from a 5th wheel for simplicity and ease of switching from a trailer to a slide in camper. So, this is all I have to remove in order to be able to put the camper on. I am getting older and this is just enough weight to carry around. The offset is perfect to jackknife the trailer. The towing with this set up is way better than the fifth wheel. Way more solid feeling and no clunking. I should have done this years ago.

Jim

11/4/2018

Excellent. Like it - Will never go back to a fifth wheel.


25
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Show More Reviews

See what our Experts say about this B and W Trailer Hitch Ball

  • Can Gooseneck Hitch be Installed on 2020 Ram 2500 With RamBox
    Yes, you can install a gooseneck hitch on your 2020 Ram 2500 with the RamBox without issue as there won't be interference. For your 2020 Ram 2500, the best gooseneck is the B&W Turnoverball Underbed Gooseneck Trailer Hitch with Custom Installation Kit # BWGNRK1320. The Turnoverball hitch is the best in the industry because it has a square base for its hitch ball which ensures optimal strength and durability. What that means is the ball isn't going to turn when you are driving, keeping...
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  • How to Get More Than 4 Inches of Offset With B&W Turnoverball Gooseneck Hitch
    There is a way to get more than 4 inches of offset, but the ball you asked about does not fit the square base of the Turnoverball hitch, and the most offset you can get with a hitch ball is the 4 inches of the 4" Offset Ball for B&W Turnoverball # BWGNXA4085. The only way to get more than 4 inches of offset is with an extended coupler" - B&W Extend-A-Goose Gooseneck Coupler # BWTEXA4200 The # BWTEXA4200 gives you 10 inches of offset, fits standard 4" diameter outer tubes, and has a 25,000...
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  • Gooseneck Hitch for 2012 Ram 2500 that Can Use Offset Ball
    Hey John, you'd have to go with an all new gooseneck hitch since Draw Tite doesn't have an offset ball for that hitch. You'd need the B and W Gooseneck part # BWGNRK1308 for if you have a gas engine or part # BWGNRK1313 if its a diesel. Then you could use the offset ball part # BWGNXA4085 which would give you 4 inches of offset.
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  • How To Determine Gooseneck Towing Capacity And Hitch Needed For A 2015 Chevy Silverado 1500
    To determine the truck's towing capacity you can contact a GM dealership with your VIN and they can look it up. You can also look in your owner's manual with your gear differential ratio to get a bit more specific gooseneck towing capacity than just doing the generic towing capacity; subtracting the gross vehicle weight rating (GVWR) from your gross combined weight rating (GCWR). To know how much turning clearance you have you can measure from the center to the gooseneck coupler to the...
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  • Can B&W Turnover Ball, Offset Gooseneck Ball & Andersen Ultimate 5th Wheel Connection work Together
    It is perfectly acceptable to use the B&W Turnover ball Gooseneck hitch # BW77FR, and the # BWGNXA4085 offset ball be used with an Andersen Ultimate 5th wheel Connection. The Andersen hitch adapter provides about 8 inches of offset, plus the 4 inches you'll get from the offset ball add up to the same 12 inch offset you'd get from most sliding fifth wheel hitches. I've also confirmed the compatibility with Andersen.
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  • Gooseneck & 5TH Wheel Hitch Systems Compatible With Air Bag Springs On 2022 F-350 Single Rear Wheels
    Yes, you are able to use the different parts together on your 2022 Ford F-350. First you will start with the B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1116. Since you have a short bed truck you may also want the 4" Offset Ball # BWGNXA4085 to gain you some additional turning clearance. While you are able to use the Demco 5th Wheel Base Rails Adapter # DM6140 with the Andersen Ultimate Connection 5th Wheel Trailer Hitch # AM3200 a better option is to use the B&W Companion...
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  • Correct B&W Turnoverball Underbed Gooseneck Trailer Hitch for a 2023 Ram 1500 EcoDiesel
    I checked with B&W and the B&W Turnoverball Underbed Gooseneck Trailer Hitch part # BWGNRK1319 is a fit for a 2023 Ram 1500 EcoDiesel. In regards to the short bed, this won't be an issue as far as fit goes but it might create problems with turning clearance on certain trailer which is why I recommend adding the 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches part # BWGNXA4085. I actually installed this hitch on an older model some time ago, it's the same generation though...
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    Image 1 for
  • Which 4" Offset Ball For B&W Turnoverball Gooseneck Hitch In 2017 Ford F-250
    Thank you for purchasing the B&W Turnoverball Underbed Gooseneck Trailer Hitch w/ Custom Installation Kit # BWGNRK1116 in your 2017 Ford F-250 Super Duty through us! The 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches # BWGNXA4085 you were looking at will fit your hitch and truck perfectly, and will give you an extra 4" of cab to trailer clearance when towing a gooseneck trailer. I included a video for the products mentioned for you to take a look at.
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  • Can 4 Offset B&W Gooseneck Ball be Used for More Clearance on a 5th Wheel Trailer
    If you have the B&W Gooseneck Hitch # BWGNRK1257 on a Toyota Tundra then you can use the 4" Offset Ball # BWGNXA4585 to give yourself some more clearance. B&W also has the 4" Offset Ball # BWGNXA4085 which is more of a standard option if you don't have a Tundra. These can be used with any kind of gooseneck coupler without jeopardizing the integrity of the offset ball. If you have a different gooseneck hitch I'd need to know what you're using to see if we have a similar product that fits.
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  • Recommended UnderBed Gooseneck Hitch and Offset Ball for a 2018 Chevy Silverado 2500
    Depending on what year, make, and model truck you have there is an option for installing a gooseneck hitch that will give you extra clearance when turning. Lets say you have a 2018 Chevy Silverado 2500. You can use the B&W Turnoverball System item # BWGNRK1016 along with the 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches item # BWGNXA4085. The combination of these two parts will push the connection point back 4" from the center of your bed. I have linked a couple of review...
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  • 4 Inch Offset Ball Compatible With B&W Turnoverball Gooseneck Hitch
    The B&W Turnoverball Underbed Gooseneck Trailer Hitch w/ Custom Installation Kit # BWGNRK1313 will use 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches # BWGNXA4085. This will give you more clearance but will also reduce your towing capacity to the 20,000 lb rating of the offset ball. This will work with your Pendaliner in-bed liner.
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  • Gen-Y Gooseneck Pin Box over the Reese Goosebox for a 2014 Grand Design Reflection 337RLS
    I would be happy to help you find a Gooseneck pin box for your 2014 Grand Design Reflection 337RLS. I recommend going with the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box item # GY66FR over the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter item # RP85FR. The Gen-Y has a shock-absorbing pin box that works without having to rely on airbags like the Reese. The shock-absorbing design functions like a torsion axle to limit transfer of road shock from trailer...
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  • Offset Gooseneck Ball for 2021 Ram 3500 With OEM In Bed Prep
    The Curt Above-Bed Gooseneck Trailer Hitch for Fifth Wheel Rails # 16055 can be used with a set of in bed rails. This will give you a 3" offset. The other option would involve putting an offset adapter on to your gooseneck trailer. Something like the B&W Extend-A-Goose Gooseneck Coupler # BWTEXA4200. If you decide that this is the best option for you let me know what tube size you have on your gooseneck trailer and I will recommend a option for you.
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  • Recommended B&W 4 Inch Offset Ball For A 2017 Dodge Ram 3500
    The 4 inch Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches # BWGNXA4085 is the offset that will work with your 2017 Dodge Ram 3500. It has a powder coated steel that resists corrosion and is made in The USA. The weight capacity for the ball is up to 20,000 pounds and has a vertical load limit of 5,000 pounds. I attached a review video link below.
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  • Offset Gooseneck Ball Recommendation for 2012 Ford F-250 with B and W Turnoverball Hitch
    For your 2012 Ford F-350 Super Duty with the B&W Underbed Gooseneck Hitch, # BWGNRK1111 installed, the B&W 4 Inch Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches, # BWGNXA4085 will be the offset that you would need.
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  • Can B and W Offset Gooseneck Ball Adapter Help with Turning Clearance
    If the gooseneck hitch you have installed in your 2004 Dodge Ram 3500 long bed is a B and W hitch then yes you can use the part # BWGNXA4085 and it will give you 4 additional inches of offset clearance. Since your truck is an 8 foot bed I can't imagine needing more clearance than what this would offer as well. This has a trailer weight capacity of 20,000 lbs and a pin weight capacity of 5,000 lbs so you'd need to compare that to the weight of the camper.
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  • Converting a 2006 Chevrolet Silverado 2500 To Haul a 5th Wheel Trailer With a Reese Goose Box
    For your 2006 Chevrolet Silverado 2500 you will need the B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1067. This will give you a gooseneck hitch ball that can easily be stored in the hitch and still provides a clean bed for every day use. If you have a short bed truck the 4" Offset Ball for B&W Turnoverball # BWGNXA4085 will provide you will a little extra turning clearance when you need to maneuver the your camper in tight areas. If you do not already have an in bed 7-way...
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  • Will 4" Offset Ball for B&W Turnoverball Put Extra Stress on Hitch
    This is a good question but as long as your trailer is under 20,000 lbs the 4 inch offset hitch ball # BWGNXA4085 would not put any undue stress on the hitch or the truck.
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  • Can Offset Ball Be Used With Offset Gooseneck Coupler
    I spoke with my contact at B&W about the 4 inch offset ball part # BWGNXA4085. They told me that they do not offer a 15 inch offset coupler so they could not recommend using the 2 together. They did say the Extend-A-Goose Gooseneck Coupler, part # BWTEXA4200 would work with the offset ball, but I am unable to guarantee your coupler would work with the # BWGNXA4085.
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  • 5th Wheel to Gooseneck Pin Box for Keystone Impact 311 Toy Hauler
    In order to use the gooseneck hitch in your 2021 F-250 with the Keystone Impact 311 I recommend the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box. However, the # GY58GR you looked at isn't rated high enough. Gen-Y uses the formula GVWR x 0.22 = TW so at 16,780 lbs it will be 3,692. This means you need the # GY66FR with the 5,500 lb tongue weight capacity assuming you have a 1621 bolt pattern. You will also need to determine which pin box bolt pattern is on the toy hauler. Since...
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  • Can B&W Extend-A-Goose Coupler BWTEXA4200 Be Used with Offset Gooseneck Ball
    The B&W Extend-A-Goose Gooseneck Coupler # BWTEXA4200 will provide 10-inches of offset for better clearance between the truck and trailer. It sounds like you are using a B&W Offset ball like # BWGNXA4085 which gives you 4-inches of offset. It is okay to use these two items at the same time. Since this Extend-A-Goose replaces a standard straight tube you will have little change to the trailer's handling, apart from the better clearance it provides.
    view full answer...
  • Determining Fitment Of Reese Goose Box With Trailer Height & Cab Clearance Distance On 1621 Pin Box
    To determine if your height is going to change on your trailer there are a few measurements you will need to take. First the lowest mounting hole on the Reese Goose Box # RP85FR is 19.2" from the hole center to the bottom of the gooseneck coupler. Since there are multiple adjustment holes that hold it to the frame you will need to measure the height from these holes to your bed to ensure you will have the height you need. For the length a Lippert 1621 Pin Box # LC1387883 it is 25-5/8"...
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  • B&W Gooseneck Hitch Fit For 2010 Dodge Ram 2500 Mega Cab Short Bed
    We do indeed have a B&W Turnoverball gooseneck hitch that fits your 2010 Dodge Ram 2500 Mega Cab with a short bed. I verified with the manufacturer that the Turnoverball hitch that fits your truck is the following: - B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1308 This hitch is specifically for the Mega Cab version of your Ram; the GNK1313 you mentioned does NOT fit the Mega Cab. In regards to the extension, since you have a short bed, I do highly recommend using an offset...
    view full answer...


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