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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 Hitch for Toyota Tundra

4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitch for Toyota Tundra

Item # BWGNXA4585
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Trailer Hitch Ball
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B and W Gooseneck Hitch Ball - BWGNXA4585
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Designed for use with B&W's Turnoverball gooseneck hitch (BWGNRK1257) for your Toyota Tundra, this ball extender moves the pivot point of your trailer 4" rearward to provide additional cab clearance. Lowest Prices for the best trailer hitch ball from B and W. 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitch for Toyota Tundra part number BWGNXA4585 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (174)
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  • Videos (2)
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B and W Trailer Hitch Ball - BWGNXA4585

  • 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 (BWGNRK1257) for your Toyota Tundra, 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 B&W Turnoverball gooseneck trailer hitch for the Toyota Tundra (BWGNRK1257)
  • Square ball base prevents ball from turning in hitch during hookup
  • Sturdy steel construction
  • Made in the USA


Specs:

  • Ball size: 2-5/16"
  • Offset: 4"
  • Distance from center of locking pin hole to bottom of square base: 1-1/6"
  • Weight capacity: 20,000 lbs
  • Vertical load limit: 5,000 lbs


GNXA4585 B and W Turn Over Ball Gooseneck 4" Hitch Ball Extender for GNRK1257 for Toyota Tundras




California residents: click here


Video of 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitch for Toyota Tundra

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for B and W Hitch Ball - Gooseneck Hitch Ball - BWGNXA4585 Review

Today were going to review Part# BWGNXA4585. This is the B&W 4-inch offset ball for the B&W turnover gooseneck trailer hitch, Part# BWGNRK1257.This offset ball will move your pivot point of your trailer 4 inches rearward to provide additional cab clearance. It is designed to work exclusively with the B&W turnover gooseneck trailer hitch, Part# BWGNRK1257. This has the square ball base which will prevent the ball from turning in the hitch during hookup. Its made of a sturdy steel construction. The part is made in the USA.

The ball size on it is 2-5/16th in diameter. Again, the offset is 4 inches so its measured from the center of the square base to the center of where the ball is. If we put a ruler on this, just to give you an idea of the 4-inch that youll be gaining center to center, this will provide additional cab clearance for you.It does have a weight capacity of 20,000 pounds. It has a vertical load limit or pin weight capacity of 5,000 pounds.What I want to do here is Im going to rotate the table here. What I ended up doing as I pulled that turnover ball gooseneck hitch Part #BWGNRK1257, I have it right here, the hitch head just to give you an idea of what it looks like.

You pull out the ball that comes with it. You can see it has a square opening. All you have to do, if this will be the rear of your truck bed and this is will be where the truck cab is, what you do is you drop this in that square opening. Once it drops in, you can see it moves that ball from this hitch another 4 inches rearward that provides your additional clearance. Its very easy to do.

Then, you just release your handle and the pin would lock this adaptor into place.That should do it for the review on Part# BWGNXA4585, the B&W 4-inch offset ball for the B&W turnover gooseneck trailer hitch, Part# BWGNRK1257. .


Customer Reviews

4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitch for Toyota Tundra - BWGNXA4585

Average Customer Rating:  4.8 out of 5 stars   (174 Customer Reviews)

Designed for use with B&W's Turnoverball gooseneck hitch (BWGNRK1257) for your Toyota Tundra, this ball extender moves the pivot point of your trailer 4" rearward to provide additional cab clearance.

by:

Very happy with the quality of this part and look forward to using it on my Tundra to pull our Camper. Shipped quickly and am overall impressed with the experience I've had with E-Trailer.



by:

Works great. I pull a 3h with my short bed Tundra and this gave me the extra breathing room I needed



by:

The hitch was perfect. I did have it installed by my local RV team. They did an awesome job for about $450. Not too bad, and give me a level of comfort I needed to tow my horses in the 5th wheel horse trailer. E-trailer filled my order efficiently, expeditiously and all the relevant information was readily available on the web page. Thanks!



by:

I have a Tundra CrewMax with a super short bed and this ball was the key for safe towing of my goose neck trailer. It gave me the extra 4 inches of clearance so I could make tight corners without worrying about hitting the cab with the trailer. Great product.



by:

Received the product promptly and great customer service. Have not used it yet but very excited to give it a try!



by:



by:

These guys are the best Prompt and no screw ups professional



by:

good product



by:

It works it's made by b&w so you know it's good



by:



by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


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.


Comments
Has been extremely great
Carlos G - 01/16/2022
Comments
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.
Carlos G - 01/17/2022

by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


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?



by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


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:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


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


Comments
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.
-- Etrailer Expert Sierra K - 03/17/2021

by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


Have an older 5th wheel style camper with a hitch adaptor, that coupled with newer style pickup boxes caused the camper to be to close to the box. This hitch helped a fair bit. It set the camper 1" higher off the box and 4" back to give more space between the bumper and camper which helps when hooking up.



by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


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:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


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:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


Quality construction, fits perfectly. I needed as much clearance as possible after installing a sleeper cab on my Ram 3500. I utilized this as well as the B&W extenda-goose coupler which collectively made sharp turns easier.



by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


Although I haven’t had the gooseneck hitch or the extender installed on my truck yet, I just want to respond to the customer service I received. I spoke with two different ladies over two days and they help me figure out which hitch I needed for my truck and were extremely helpful. I was told I would receive the hitch in about a week but it showed up two days later. I’m very happy with the company and would definitely use them again



by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


purchased for my son as a Christmas gift in 2020. He told me what to get and where to order from. The order process was easy and shipping was fast. He has been happy with this hitch.



by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


Installing it on a 2016 Ram 2500 diesel crew cab swb with factory puck prep. Changed the factory goose ball out to a B&W turnoverball. Have not got to use it yet, but I am going to change to a Reese goosebox hitch on my 5th wheel



by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


Hitch arrived on time and exactly as advertised. Customer service at etrailer.com is superb and one of the reasons they are my "go to" vendor for parts for my truck and horse trailer. Follow-up and communication is exemplary. Pamela in Customer Service ... way to go, girl! You're tops!



by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


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:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


Excellent well made American product.Fast shipping and good communication.



by:

Review from a similar Offset Turnoverball in Trailer Hitch Ball


Haven’t used it yet. Trying to get a little more turning clearance with my fifth wheel.


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Show More Reviews

Ask the Experts about this B and W Trailer Hitch Ball



  • Which Offset Ball for B&W Turnover Ball Gooseneck Hitch in 2019 Ford F-350
    For the B&W Turnover Ball Gooseneck Hitch in your 2019 Ford F-350, you'd want to use the # BWGNXA4085. The difference between this offset ball and the one for the Tundra and the Ram 1500 is the depth of the gooseneck receiver where the ball sits. If you used either the BWGNXA4685 or the BWGNXA4585 the receiver won't be deep enough for the ball to secure into the hitch.
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    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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  • Can the 4 Inch Offset Ball for B&W Turnoverball Be Used With the Anderson Ultimate
    For starters, the correct 4" Offset Ball for B&W Turnoverball Gooseneck Trailer Hitches that is needed to use on a Dodge Ram 2500/3500 is part # BWGNXA4085 or part # BWGNXA4685 for a Dodge Ram 1500, not part # BWGNXA4585 which is for a Toyota Tundra. That said, you can use this with your Anderson Ultimate 5th Wheel to Gooseneck but since the hitch ball will add height you will need to make adjustments to your coupler accordingly.
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  • Recommended Offset Ball for B&W Gooseneck Trailer Hitch
    I do have a solution for you, however the Draw-Tite 5" Offset Ball # 19308 mentioned in your question is not compatible with B&W gooseneck hitches. There a few compatible offset balls for your B&W Turnoverball Gooseneck Hitch, depending on the specific model that you have. To ensure you get the correct one, you just want to take a measurement from the locking pin hole to the bottom of the square base on your hitch ball. I have included an image that shows where you want to take this measurement....
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  • Gooseneck Hitch Recommendation for 2013 Toyota Tundra with 5-1/2 foot Bed
    For your 2013 Toyota Tundra with a 5-1/2 foot bed the best option will be the B and W Gooseneck hitch part # BWGNRK1257 with the 4 inch extender part # BWGNXA4585. The extension won't help much, but if your trailer has a very narrow nose like a livestock trailer this would be best shot. If the trailer has living quarters and a wide nose you really won't have a way to do it.
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  • 4" Hole Location For B&W Turnover Ball Gooseneck Hitch On a 2020 Toyota Tundra
    The hole for the B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1257 is to be placed at 42-3/8" from the rear of the truck bed and centered between the fenders on your 2020 Toyota Tundra. The hole location is the same for all bed lengths of your Tundra. This information is found in the installation instructions which I have linked below. A 4" Offset Ball # BWGNXA4585 can be used in place of the original ball for increased clearance and turning radius.
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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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  • B&W Gooseneck Turnover Ball Adapter for 2015 Chevrolet Silverado 3500 with 6-1/2 Foot Bed
    The 4 Inch Offset Ball fro B&W Turnoverball Gooseneck Trailer Hitches, # BWGNXA4085, is a fit for your 2015 Silverado 3500 with 6-1/2 foot bed using B&W Turnoverball Underbed Gooseneck Trailer Hitch, # BWGNRK1012 . This ball will move your trailer 4 inches toward the rear of your truck to allow you extra clearance. There are almost identical adapters that are not compatible with certain hitches because they have a different length shank from center of pin hole to square base and only...
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  • Which B&W Offset Ball Will Fit A 2018 Ford F-250 Short Bed With A B&W Gooseneck Hitch Installed?
    For your 2018 Ford F-250 with the 6-3/4 foot bed, you will want to use the 4" Offset Ball # BWGNXA4085. This will fit your B&W Turnoverball # BWGNRK1116, which is the only B&W gooseneck hitch available for your truck, without any issue at all. There are other offset balls needed for a Toyota Tundra and a Ram 1500 ( # BWGNXA4585 and # BWGNXA4685 respectively), so there are a couple other models, but aren't really relevant for your truck.
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  • What Reese Goose Box Do I Need for My 2021 Grand Design Solitude 3740BH?
    Thanks so much for the photos and the information! I went ahead and called my tech at Lippert, and she confirmed that your 2021 Grand Design Solitude 3740BH has a 1621HD pinbox This is important to know when determining the bolt pattern on your pinbox. Also, from my available specs, your trailer has a gross vehicle weight of 16,800 pounds. With all of this in mind, the Reese goose box you need is the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP94720. I went ahead...
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    According to pages 167-169 of the online owner's manual for your 2017 Toyota Tundra Crewmax 5.7L V8 the most trailer weight this truck can tow is 10,100-lbs. You will want to refer to your printed manual too since this maximum capacity depends on the specific engine and drivetrain and whether or not you have the optional towing package. Many versions have lower capacities. You can also check with your local dealership using the truck's VIN. For 5th wheel towing in this truck your 5-1/2-foot...
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