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4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches
(392 reviews)
Price: $174.90
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- All Info
- Reviews (392)
- Q & A (0)
- Photos
B and W Trailer Hitch Ball
- Gooseneck Hitch Ball
- 2-5/16 Inch Diameter Ball
- Offset Ball
- 20000 lbs GTW
- Coated Steel
- B and W
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"
GNXA4085 B and W Turn Over Ball Gooseneck 4" Hitch Ball Extender
Item # BWGNXA4085
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
- Product did not meet expectations
- Wrong item was ordered
- Did not arrive in time
Ratings & Reviews
4.8
392 reviews
by:
Elton
10/20/2025
Very well built, definitely heavy duty! The only issue for me is because its lifted above the floor a little my Pullright 5th wheel companion hitch won’t tighten down without shimming the hitch up. I don’t like using wood under it but, I’ll try it.
by:
Brian
10/26/2026
I needed a bit more space between my tail gate and my 5th wheel camp trailer. Gave me the extra space I needed so I can back up and hook up with my tailgate down. No complaints whatsoever. Fits perfect in the BW receiver.
by:
Jody
05/16/2026
Ball works great. No flex or bounce with the offset, it’s rock solid. I’m an owner/operator trucker with 34 years hauling all sorts of equipment. I’ve got lots of experience with every kind of hitch and trailer setup and this one is top notch. For anyone thinking of buying one of those cheap China knockoffs from another website, don’t do it!!! It’s not worth the risk or liability if you loose your trailer in transit. This hitch ball it’s professionally engineered and tested and worth every penny!!
by:
Kevin
04/28/2026
I’ve only towed with it once, but it gives the extra turning room that is needed. I can almost get to 90 in my 25 F250 short bed. It also creates more room in the bed for getting in and connecting the safety chains.
One small negative is that the amount of bounce and chucking is slightly increased due to the hitch now being behind the axel.
Something that will hopefully fixed easily by installing Timbren bump stops to give more support.
One small negative is that the amount of bounce and chucking is slightly increased due to the hitch now being behind the axel.
Something that will hopefully fixed easily by installing Timbren bump stops to give more support.
by:
Dean
06/12/2022
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?
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.
Mike L.
9/6/2023
@Dean We're happy to hear that the # BWGNXA4085 offset gooseneck ball is working well for you.
by:
Jedediah
10/03/2024
Works exactly as I need it to. Having a 38 ft, 96" wide goose neck Keystone Cougar trailer and a RAM 2500 with 6'4" bed, I needed offset on my hitch for safety purposes.
I have a few thousand miles of travel using this setup and it works fantastic. I spray on a dry lube before every use but have had most of the protective coating on the ball come off, which is what I expect to happen with heavy use.
I would would buy again, if needed, but I expect years more use out of this BAll.
I have a few thousand miles of travel using this setup and it works fantastic. I spray on a dry lube before every use but have had most of the protective coating on the ball come off, which is what I expect to happen with heavy use.
I would would buy again, if needed, but I expect years more use out of this BAll.
Jedediah
10/6/2025
After thousands of additional miles, Im still absolutely thrilled with this offset hitch! As a follow-up to my previous review, and after even more frequent and heavier usage towing my gooseneck camping trailer, I can confidently say its been a game-changer. The performance remains flawless, consistently exceeding my expectations under these more demanding conditions. To further enhance the towing experience over the past year, I added the Air Lift LoadLifter 5000 Ultimate Rear Air Helper Springs ITEM AL88289, which complement the hitch perfectly and provide added stability. In fact, Im so impressed with this hitch that I fully expect to continue using it for years to come, even when the time comes to purchase future trailers. It just works that well, giving me the confidence and stability I need for safe and comfortable towing.
by:
Brett
08/15/2026
Got the offset hitch ball I ordered
by:
Nick
04/06/2026
Works great. Gave me some extra turn radius with our new 5th wheel. Had some issues with shipping and Neil was on it right away and credited me back the cost I paid for the expedited shipping.
by:
TLB
03/02/2023
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:
Lorraine
04/10/2026
We love it. Gave us the perfect space to safely open our tailgate and the camper is sitting at a perfect height from the sides of the truck bed
by:
Louis
05/27/2018
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:
Joseph
03/22/2026
Very heavy duty! Handles my 5th wheel well.
by:
Stanton
06/09/2026
Great service, fast shipping, what more could you want.
by:
Jason
11/27/2019
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:
Mark
11/20/2025
I bought this to move hitch weight forward 4" so I reversed the described installation. This is because on my 2024 Sierra 2500 the B&W (and factory) hitch connection to ball is behind the axle by roughly the offset.
by:
Samuel
04/23/2026
That extended ball worked great. Really helped getting my stock trailer into a better spot for the truck!
by:
Ryan Miller
05/18/2019
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.
Truck is a 2500 Ram, pulling 42ft gooseneck.
by:
Rhonda
10/11/2026
Does what it’s expected to do.
by:
Wes
03/06/2021
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
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:
Sam
09/30/2026
Works great.
by:
Matthew
08/29/2019
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:
BJS
10/30/2025
Great addition to add if you have a standard box with a tri-fold tonneau cover and want to keep the cover on vs taking it off every time you pull your gooseneck trailer!
by:
Kevin
09/01/2026
Works as expected. Great quality.
by:
Jeff S
06/27/2026
Ordered this ball for the "what if" cases for our GMC Sierra 2500. Only had to use it once for a hard back in. Glad we had it!
by:
Jim
08/18/2026
The ball was shipped in a very timely fashion. Box was a little smashed but not your problem.
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See what our Experts say about this B and W Trailer Hitch Ball
- What 5th Wheel to Gooseneck Adapter Hitch do I Need for My 2019 Ford F250 with Short Bed?Hello Shane, Great question, and I am going to need you pin box number to ensure we are getting you the right part number. If you are unsure of your pin box number, please feel free to send me the information off of the sticker on your current Pin Box so I can get it from Lippert. Since your 2019 F250 is a short bed you are definitely going to need an offset. The Shocker 5th Wheel to Gooseneck Pinbox for Lippert 1621/0719 and Rhino Box - 24K GTW - 6K TW # SHK23MR has a 3" offset. I attached...
view full answer... - Comparing Reese Goose Box Pin Box to Andersen Ultimate for Ram 3500 Short Bed Turning ClearancesThe Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP94720 for Lippert 1621, 1621HD, and 0719 pin boxes will not increase your turning clearances by itself beyond the Andersen Ultimate hitch you have. The distance from the center of the hitch ball coupler to the center of the first row of bolt holes is 17-3/4 inches. The biggest benefit is the air ride suspension along with one less moving part. The only way to increase this is to use an offset hitch ball like the...
view full answer...
- Can B&W Offset Gooseneck Hitch Ball Work with OEM Puck System on 2021 Ram 3500Hey Rudi, thanks for reaching out! I think what you're saying is you have the OEM puck system with the center gooseneck hole installed on your 2021 Ram 3500. If that's the case, then I recommend using the Gen-Y Hitch Gooseneck Trailer Hitch # GY83XR which comes with a 5" offset - the 4" Offset B&W Ball # BWGNXA4085 is designed to only work with the B&W gooseneck hitches like part # BWGNRK1320 that fits your truck. You can replace your OEM puck system with the B&W gooseneck, but I don't...
view full answer... - Does Using an Offset Gooseneck Ball Change where the Pin Weight is Carried in the Truck BedIf you were to use the 4 inch offset ball # BWGNXA4085 the pin weight on the ball will not be changed. What will change is where the weight is carried on the truck. Using the offset ball will put more weight 4 inches back from the center of the gooseneck ball hole in the truck bed. This may or may not affect the truck. Some things that could happen include reduced steering and braking and headlights angled upward. If the weight is far enough behind the rear axle it can lift the front...
view full answer... - Can Andersen Ultimate Be Used With Offset Gooseneck Ball?Hey Wade, thanks for getting in touch. The Andersen Ultimate Hitch can be used with an offset gooseneck ball. This has been confirmed with Andersen.
view full answer... - Will 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches Fit 2022 Ram 2500Hey James! I'm not entirely sure what you're asking here. Do you want to know if you can use the # BWGNXA4085 with the additional height compared to your current ball? This ball is 5-3/4" tall from the base of the truck bed to the top of the ball. This will be approximately 1-3/4" taller than your current ball so the trailer nose will sit a little higher. Unless you're already nose high I don't see this being an issue.
view full answer... - Is An Offset Gooseneck Ball Required With A Short Bed Truck?Hi Jim! Good call going with the MORryde GooseTech! These work very well and people are really liking them so far. Now to get to your question. Required? No. Recommended? Yes. So what I mean by that is it isn't always a requirement. A lot of 5th wheel campers/trailer have tapered noses these days and you can typically get away with not needing to move the pivot point back. However, doing so will definitely give you more turning clearance and it is almost always something I recommend with...
view full answer... - Offset Gooseneck Ball for 2021 Ram 3500 With OEM In Bed PrepThe 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.
view full answer... - Height of B&W 4 Inch Offset Gooseneck Ball Above Truck BedWelcome back Mike. The B&W 4" Offset Gooseneck Ball # BWGNXA4085 measures 5-3/4" from the bed of your 2019 Ford F-150 to the top of the ball. This is approximately 1-11/16" taller than the standard B&W Turnoverball, and it moves the connection point 4" toward your tailgate for additional cab clearance. What kind of trailer are you towing with your F-150?
view full answer... - Recommended Gooseneck Hitch for a 2027 GMC Sierra 3500Congrats on the new truck John. To add a gooseneck hitch to your new 2027 GMC Sierra 3500, I recommend the B&W Turnoverball Gooseneck Hitch item # BWGNRK1020. This gooseneck hitch is custom fit and includes all hardware necessary to complete installation on your truck. It has a massive 30,000 lbs capacity and is compatible with both the 6-3/4' and 8' bed lengths. The B&W Turnoverball item # BWGNRK1020 allows you to store the 2-5/16" hitch ball upside down and inside your bed when you are...
view full answer... - Recommended B&W Turnoverball Gooseneck Hitch for a 2027 Chevy Sierra 2500 I sure can Jacob and congrats on the new truck. The B&W Turnoverball Gooseneck Hitch item # BWGNRK1020 is the correct one for your new 2027 GMC Sierra 2500. This gooseneck hitch is custom fit and includes all hardware necessary to complete installation on your truck. It has a massive 30,000 lbs capacity and is compatible with both the 6-3/4' and 8' bed lengths. The B&W Turnoverball item # BWGNRK1020 allows you to store the 2-5/16" hitch ball upside down and inside your bed when you are...
view full answer... - Correct 4" Offset Ball for a B&W Turnoverball Hitch on a 2013 Ford F-150No, you'll need a longer one since you have a Ford truck. The correct 4" Offset Ball for B&W Turnoverball on a 2013 Ford F-150 is item # BWGNXA4085. The 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitch for Dodge Ram 1500 item # BWGNXA4685 has a significantly shorter tube so it won't reach the locking pin.
view full answer... - Recommended B&W Offset Hitch Ball for a Turnoverball Gooseneck Hitch on a Ford F-250Welcome back Jeffery. B&W offers something similar for their Turnoverball Gooseneck Hitch item # BW73FR. It's the 4" Offset Ball item # BWGNXA4085. This 2-5/16" gooseneck ball is designed specifically for the B&W Turnoverball Gooseneck Hitch item # BW73FR. It will push the connection point back 4" towards your tailgate to provide you with some extra turning clearance. The B&W Turnoverball Gooseneck Hitch item # BW73FR is the correct one for your 2026 Ford F-250. This gooseneck hitch is...
view full answer... - Recommended Gooseneck Hitch for a 2027 Chevy Silverado 2500Congrats on the new truck James and welcome back. To add a gooseneck hitch to your new 2027 Chevy Silverado 2500, I recommend the B&W Turnoverball Gooseneck Hitch item # BWGNRK1020. This gooseneck hitch is custom fit and includes all hardware necessary to complete installation on your truck. It has a massive 30,000 lbs capacity and is compatible with both the 6-3/4' and 8' bed lengths. The B&W Turnoverball item # BWGNRK1020 allows you to store the 2-5/16" hitch ball upside down and inside...
view full answer... - Recommended Gooseneck Hitch for a 2027 Ram 3500 Congrats on the new truck Jessica and welcome back. To add a gooseneck hitch to your new 2027 Ram 3500, I recommend the B&W Turnoverball Gooseneck Hitch item # BWGNRK1320. This gooseneck hitch is custom fit and includes all hardware necessary to complete installation on your truck. It has a massive 30,000 lbs capacity and is compatible with both the 6-1/2' and 8' bed lengths. The B&W Turnoverball item # BWGNRK1320 allows you to store the 2-5/16" hitch ball upside down and inside your bed...
view full answer... - Can The Demco Recon DM93YV Be Used With A B&W Turnoverball Underbed Gooseneck Hitch?Welcome back, James! The Demco Recon Gooseneck-to-5th Wheel Trailer Hitch Adapter for Recessed Ball on Aluminum Beds - 21K # DM93YV will absolutely work with the B&W Turnoverball Underbed Gooseneck # BW73FR. And actually, the 4" Offset Ball # BWGNXA4085 as well! This technically will be slightly offset to the rear as well though, so you may not need the 4" offset ball anymore. What are you going to be towing?
view full answer... - Recommended B&W Turnoverball Gooseneck Hitch for a 2027 Ford F-350Congrats on the new truck Josh. The B&W Turnoverball Gooseneck Hitch item # BW73FR is the correct one for your new 2027 Ford F-350. This gooseneck hitch is custom fit and includes all hardware necessary to complete installation on your truck. It has a massive 30,000 lbs capacity and is compatible with both the 6-3/4' and 8' bed lengths. The B&W Turnoverball item # BW73FR allows you to store the 2-5/16" hitch ball upside down and inside your bed when you are not using it. This gives you...
view full answer... - Compatibility of B&W Gooseneck Hitch and Offset Ball with Andersen Ultimate Hitch on 2018 F-150 5.5For your 2018 Ford F-150 with 5.5 foot bed, the B&W Turnoverball Underbed Gooseneck Trailer Hitch w/ Custom Installation Kit # BW77FR is the correct fit. You will want to use the 4 inch offset ball # BWGNXA4085 because the bed is shorter than 6 feet. This offset ball will work with the Andersen Ultimate Hitch but you will still need to be careful with turning clearances due to the short bed and Super Crew Cab. The Andersen hitch will require the shorter 3237 coupler tube in place of the...
view full answer... - Looking For Twist Lock Gooseneck Ball With 4" OffsetHey Rich, thanks for reaching out. We do have offset gooseneck balls, but nothing with a twist lock. For example, the B&W 4" offset ball # BWGNXA4085 is for the B&W Turnoverball gooseneck hitch. Or the Curt RockerBall Multi-Fit Ball Kit w/ 4" Offset # C78ZV with OEM gooseneck hitches. Both of these just drop into the gooseneck ball hole. Do you know what brand your gooseneck hitch is? Is it factory or aftermarket?
view full answer... - Gen-Y 5th Wheel To Gooseneck Pin Box Compatibility With A Rhino Box Pin Box Hey John, The Gen-Y Hitch 5th Wheel to Gooseneck Pin Box # GY98GR has a matching bolt pattern to your Rhino Box pin box. You will want to check your 5th wheel's pin weight to ensure the 3.5K model is going to be the right capacity though. With a 6.5' bed you're not going to be able to make a 90 degree turn unless your trailer has a really tapered nose. You can, however, use an offset ball to help provide more turning clearance though. These all have specific fits to the gooseneck hitch...
view full answer... - Gooseneck Hitch Fit for 2019 Ram 1500 With 5-1/2 Foot BedThere is only one gooseneck hitch that is confirmed to fit your 2019 Ram 1500 with a 5-1/2 foot bed (as of July 2019), the B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1319. The cut out of the instructions show where the hitch ball will be when installing this. Since you have a 5-1/2 foot bed you will need the B&W Extend-A-Goose Gooseneck Coupler # BWTEXA4200 which has a 10" offset, in order to give you a way to make a turn with a gooseneck hitch installed. This coupler will...
view full answer...
- Gooseneck Hitch for 2026 Ram 3500 Big Horn Short BedHey Rob! You can actually use either one, but my recommendation would be the Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1320-5W. B&W makes some of the best hitches available, and the Turnoverball is no exception. Assuming you're using the regular ball, it can be stored upside down in the hitch when not in use. It also allows you to use the Companion # BWRVK3400-5W if you want to use a regular 5th wheel hitch at some point in the future. Not something...
view full answer... - Can a B and W Extend a Goose Goosneck Coupler be Used with a 4 inch Offset Gooseneck BallI spoke with my contact at B and W and was told that the Extend a Goose # BWTEXA4200 and the 4 inch offset ball # BWGNXA4085 can be used together. However, the pivot point of the trailer will still only be 4 inches back from its original position meaning that you will get 4 inches of true offset, not 14.
view full answer... - Underbed Gooseneck Hitch For 2020 Ford F-150 Short BedHi James; is the 36-gallon tank a factory part and not aftermarket? If so there is an option but for aftermarket tanks I wouldn't be able to verify if there would be interference or not. So as long as your tank is a standard tank on your 2020 Ford F-150, the underbed gooseneck hitch that fits your short bed truck is the following: - B&W Turnoverball Underbed Gooseneck Trailer Hitch # BW77FR I also wanted to mention that since you have a short bed, an offset ball is highly recommended...
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Lazer S.
10/28/2025
Glad you like it, Elton! Well, other than having to use shims, of course. This can lift things up a bit so I do hear people say they need to shim them in one way or another. I would go with some hard rubber though. I don't remember what it is called, but you can get it at pretty much any hardware store. I have a bunch of it in my garage and basement to protect the cement floor. I think you can even get it cut to size. It's 1" thick and is super durable. I think it would hold up better than wood.