1. Trailer Hitch Ball Mount
  2. B and W
  3. Fits 3 Inch Hitch
  4. Adjustable Ball Mount
  5. Drop - 4-1/2 Inch
  6. Rise - 4 Inch
B&W Tow & Stow 2-Ball Mount - 3" Hitch - 4-1/2" Drop, 4" Rise - 21K - Black

B&W Tow & Stow 2-Ball Mount - 3" Hitch - 4-1/2" Drop, 4" Rise - 21K - Black

Item # BWTS30037B
lowest price pledge
Our Price: $319.00
You Save: $65.87
Trailer Hitch Ball Mount
This item qualifies for Free Shipping
Shipping Weight: 34 lbs
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
Easily stow the ball and mounting platform on this heavy-duty, dual-ball ball mount beneath your hitch for a sleek look when you are done towing. Tow up to 7,500 lbs with the 2" ball or 21,000 lbs with the 2-5/16" ball. Lowest Prices for the best trailer hitch ball mount from B and W. B&W Tow & Stow 2-Ball Mount - 3" Hitch - 4-1/2" Drop, 4" Rise - 21K - Black part number BWTS30037B can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (1990)
  • Q & A (5)
  • Videos (2)
  • Photos
  • Why etrailer?

B and W Trailer Hitch Ball Mount - BWTS30037B

  • Fits 3 Inch Hitch
  • Adjustable Ball Mount
  • Drop - 4-1/2 Inch
  • Rise - 4 Inch
  • 2 Inch Ball
  • 2-5/16 Inch Ball
  • Two Balls
  • Class V
  • 21000 lbs GTW
  • B and W
  • Steel Shank - Matte Black
  • Steel Ball

Easily stow the ball and mounting platform on this heavy-duty, dual-ball ball mount beneath your hitch for a sleek look when you are done towing. Tow up to 7,500 lbs with the 2" ball or 21,000 lbs with the 2-5/16" ball.


  • Ball mount with built-in hitch balls lets you hook up your trailer to your tow vehicle
    • Shank slides into hitch receiver
    • Ball provides connection point for trailer coupler
  • Stowable design lets you store ball and mounting platform underneath your vehicle
    • Remove pins holding ball mount platform in place on shank
    • Flip platform underneath the hitch
    • Reinsert pins and clips to secure ball mount platform for travel
  • Adjustable height lets you tow trailers of different heights with the same vehicle
    • Slide ball mount up or down along shank and secure in place with included pins and clips
  • Anti-theft design ensures ball mount platform can't be removed when Tow & Stow is installed in hitch
    • No additional locks required to prevent platform and balls from being removed
  • 2 Different-size hitch balls let you tow trailers with different coupler sizes
    • To switch ball, simply remove pin, rotate balls, and reinsert pin
  • Dual-process chrome plating on balls provides excellent rust resistance
  • Black powder coated shank is corrosion resistant
  • Stainless steel pins create sturdy, rust-resistant connections
  • Durable steel construction with high yield tubing offers superior strength
  • Hitch pin and clip or hitch lock sold separately
  • Made in the USA


  • Application: 3" x 3" trailer hitch receivers
  • Gross towing weight:
    • When used with 2" ball: 7,500 lbs
    • When used with 2-5/16" ball: 21,000 lbs
  • Distance from center of hitch pin hole to center of hitch ball:
    • Hitch pin hole closest to ball: 9-1/4"
    • Hitch pin hole farthest from ball: 10-3/8"
  • Distance from center of hitch pin hole to pin hole in mounting block:
    • Pin hole closest to mounting block: 3-3/4"
    • Pin hole farthest from mounting block: 4-7/8"
  • Maximum drop: 4-1/2"
  • Maximum rise: 4"
  • Incremental height adjustment: 1-3/8"
  • Minimum clearance: 11" from ground to lowest point on Tow & Stow hitch
  • Limited lifetime warranty


  • Requires a minimum of eleven inches of clearancebetween the ground and the lowest part of the hitch
  • Without adequate ground clearance, the hitch may hit theground or other objects such as steep driveways or curbs
  • Striking any obstacle may cause damage to the hitch that could affect its integrity

The B&W Tow & Stow adjustable ball mount lets you tow a variety of trailers with different tongue heights. Having both a 2" ball and a 2-5/16" ball allows for even more versatility, making this the ultimate go-to ball mount if you own multiple trailers.

Easily Adjusts and Stows

B&W Tow & Stow Ball Mount Operation

To switch the hitch ball, simply remove the pin holding the balls in place and rotate the entire block that the balls are mounted on until the ball you want to use is on top. Then replace the pin to secure the block in place.

Adjusting the height of the ball is just as easy. Remove the pins holding the ball mount platform in place and slide the platform up or down along the shank to the desired position. Once you have found the correct height, reinsert the pins and replace the clips.

When you're not towing, you can flip the ball mount platform around and stow it beneath your hitch so that you won't bang your shins. Just remove the pins to slide the ball platform down along the channel and up the back side so that the hitch balls face towards your vehicle. Then replace the pins.

Built-In Anti-Theft System

The Tow & Stow ball mount features a channel that runs along both sides of the shank. This channel not only allows you to slide the ball mount platform up and down to adjust the ball height, but it also prevents removal of the platform when the ball mount is installed, which will help prevent theft of your trailer.

Single Dimensions

A slot is cut into the adjustment channel near the top of the shank. To remove the ball mount platform from the shank you will need to remove the entire ball mount from your hitch. Then remove the pins that hold the platform in place. Flip the platform around to the stowed position on the rear of the shank, and then slide it up until the center pin lines up with the slot in the shank. Pull the platform out towards the rear of the shank until the pin pops out of the adjustment channel.

When the Tow & Stow is secured in your hitch receiver, you will not be able to remove the ball mount platform. This is because the slot in the shank is positioned in such a way that the collar on your hitch will block the pin on the platform from being able to leave the channel. Even if the pins holding the ball mount platform in place are removed, the platform will still be confined to this channel. So, as long as a hitch lock is used to secure the entire ball mount in your hitch receiver, and a coupler lock is used to prevent your trailer's coupler from being disengaged from the ball, your trailer will be secure.

How to Measure Drop on Adjustable Ball Mount

TS30037B B and W Stow and Tow Dual Ball Mount - Model 8 - 2" Ball and 2-5/16" Ball - Black

California residents: click here

Video of B&W Tow & Stow 2-Ball Mount - 3" Hitch - 4-1/2" Drop, 4" Rise - 21K - Black

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

Video Transcript for B and W Tow and Stow 2-Ball Mount Review

How's it going everybody Clayton here at etrailer.com. Today we're going to be checking out the BMW tow and stow adjustable ball mount. Now we do have a wide variety of options here at etrailer of the BMW adjustable ball mount. Today we're going to be taking a look at the Chrome finish but you can also find all of these in black as well. We're going to be looking at the three inch drop today but you can find other drops or rises here at etrailer as well. And then we are looking at the two ball today but you can also find these all in three ball as well.

Now, one of the huge benefits to using an adjustable ball mount like this one is we can fine tune this to whatever we're towing. A lot of times when we're looking for an adjustable ball mount, that's because we're pulling multiple trailers and especially one that has different ball sizes as well. So this is really going to allow us to use any trailer that we might have, and it's all going to be right here. We're not gonna have to switch out ball mounts or anything like that. Now you do see it in the stow mode now.

This is going to be really nice cause we don't have anything sticking out of the back. So we're not going to worry about running into it or somebody else running into it. But whenever we're ready to use it we're going to remove our clips. Just pull these pins out. The whole assembly will drop down, swing around.

Then you can set it at your desired height for whichever trailer you're towing. You always want to make sure to reinstall these clips. Then to turn the ball we're going to remove our pin and clip here. Let's say we're going to use a two inch ball. We'll turn that upwards, and then reinstall that pin and clip.

Now we're ready to hook up to our trailer and hit the road. The ball mount we're using today is going to be for two inch hitch receivers, but no need to worry. If you have a two and a half or three inch you can find all these options here at etrailer as well for those hitches. Now, honestly, when it comes to BMW they are one of my favorite brands. Whenever it comes to ball mounts, fifth wheels, and goosenecks. They overbuild everything and they look really nice in the process. This is definitely a ball mount that you're going to get complimented on. It looks really nice on the back of our vehicle and it's very functional as well. And one question you might be asking yourself when it comes to a ball mount is, yeah, it looks great, but how much can it pull This ball mount is going to be rated for 10,000 pounds of towing capacity and 1000 pounds of tongue weight. Now you do want to keep in mind, whichever ball you're using is going to have a different rating. So our two inch ball is going to have a 7,500 pound capacity and our two and five sixteenths is going to have a 10,000 pound capacity. So that's going to be more than enough to tow any trailer we might use, or be doing with this truck but you do want to keep in mind you need to check with your owner's manual for your vehicle and make sure it can tow with those capacities and never exceed the amount rated by the ball or your vehicle. Something I highly recommend picking up is going to be a locking pin and clip. This is going to help protect our investment. We don't want anybody coming up here and taking this off the back of our vehicle. So having that locking pin and clip is going to give you the peace of mind to know that it's secured and your investment's protected. You can find locking hitch pins here at etrailer. And when it comes to adjusting our ball mount this one really sells itself. It's going to be easy use. Let's say we get to the job site with our utility trailer. We dropped that off and now we need to pickup a dump trailer. All we're going to do is remove our pins. Slide that up, to down to the desired height. Re-install our pins and clips. Flip that ball over and hit the road. Now, this is going to be super easy to use. Really, I honestly like it. You don't need any tools or anything like that to switch things around, and everything stays on the ball mount. It's not like we're going to have to grab another one or hope that we leave it in the truck or anything like that. It's all right here and ready to go. Then once we're done, we can flip the ball back this way. Again, reinstall those pins and clips. You removed that last one, flip it underneath, put that pin and clip back in, and we're good to go. All in all, this really is one of my favorite ball mounts on the market. I would definitely recommend to anybody I know or even that I don't know. It's definitely something that I like to use. It makes life a lot easier. That's going to do it for our look at the BMW tow and stow adjustable ball mount..

Customer Reviews

B&W Tow & Stow 2-Ball Mount - 3" Hitch - 4-1/2" Drop, 4" Rise - 21K - Black - BWTS30037B

Average Customer Rating:  4.9 out of 5 stars   (1990 Customer Reviews)

Easily stow the ball and mounting platform on this heavy-duty, dual-ball ball mount beneath your hitch for a sleek look when you are done towing. Tow up to 7,500 lbs with the 2" ball or 21,000 lbs with the 2-5/16" ball.

- BWTS30037B

Hitch arrived as scheduled. Excellent product, exactly as advertised. Normally tow a fifth wheel and had great confidence in B&W. Need to tow a utility trailer and this is perfect!

- BWTS30037B

etrailer shocked me with their customer service. The B & W trailer hitch I ordered was out of stock. Within 10 minutes of placing my order at 10:00PM an employee contacted me to make sure I knew it wouldn’t be back in stock until the following week. And also took the time to add links to two different B & W hitches that are similar in case I needed it immediately. Unfortunately that kind of customer service isn’t expected anymore, it really made me feel good. I run several trailers for my business and they earned my business from now on. As for the product itself, exactly as expected. Price was right. And no more swapping between 2” and 2 5/16” hitches. My shines will also appreciate this hitch when walking behind my pickup in the dark!

- BWTS30037B

I received the mount yesterday, greased the pins and installed on my 2017 F350 Powerstroke FX4. The quality is certainly impressive and the powdercoating is pristine. Even the stickers are stuck on straight! I am very happy with the overall fit and finish - this is how I would want my product to look if I was B&W. The thought of installing/uninstalling a ball mount every time I needed to pull a trailer loses its appeal when they are rarely where you need them or where you think they are. I researched a number of options - cushion mounts, etc. - and there are only a handful of 3" ball mounts out there right now. I didn't want to have to worry about the factory adapter sleaves in my receiver either. This addresses all of those concerns perfectly. It's out of the way when I am not using it and right there if I need it. Frankly, I cannot imagine a better solution to the problem. Yeah, it's a big hitch despite being the smallest offering in the 3" category, but I don't anticipate handling it too often. The only downside I see is that there are no drawbar mounts or silencers offered for the 3" version and there do not seem to be any locking pin options to replace the 3 stainless pins that are just held on with pin clips. I am hopeful no one uses my mount to scavenge for missing parts on their own mount. The locking pins would need to be 5/8" diameter with a span of no less than 4 5/8".

- BWTS30037B

This is the second item I have ordered from etrailer. The first was a FW hitch. Both times, the process has been smooth and easy and the delivery was fast! Great online sales experience. Will buy here again!

- BWTS30037B

Nice hitch. I like the way it tucks away. No more banging shins or knees when walking around the back of the truck.

- BWTS30037B

Product is excellent, arrived in good condition. The order took longer then I anticipated to receive. Had hoped to have my items for a planned trip however they did not arrive in time.

This is an excellent hitch. Love how you can tuck it away when not in use
Kirk - 06/25/2021

- BWTS30037B

I needed a ball mount for my 3" reciever. I found what I needed at etrailer and for the best price! Thanks.

- BWTS30037B

Exactly what I ordered and arrived early. Thank you!

- BWTS30037B

Great product and price !! Plus free shipping is great also and friendly staff as always !!!!

- BWTS30037B

great product, love that it is made in the usa! Way to go!

- BWTS30037B

Heavy duty is what this thing is. I love the tow n stow feature. Very easy to change the hight or flip it to stow.

- BWTS30037B

Have not used it yet but I like the design and the fact I don’t have to keep taking it on and off

- BWTS30037B

The hitch is just as sleek as advertised when folded back. And with a 21K tow capacity its hard to believe it can be so compact from the heavy hitches I used to have.

- BWTS30037B

I like this hitch a lot .

- BWTS30037B

Great quality product. Made in America.

- BWTS30037B

Wonderful customer service, fast shipping. WILL buy from again!

- BWTS30037B

Amazing product and etrailer shipped it immediately. I had the product a day before I was expecting it.

- BWTS30037B

I recently purchased a 21k capacity hitch for my husband because he purchased a new truck and he definitely loves it! Very heavy duty like he wanted it.

- BWTS30037B

Well-thought-out product. Easy to use and stores nicely out of knee and shin range!

- BWTS30037B

product was delivered on time and package was in great shape

- BWTS30037B

Great product

- BWTS30037B

Great product. One thing to know is that it doesn’t come with the pin to connect it to your truck. Had to go back and order one after it arrived.

- BWTS30037B

Excellent customer service!! Went above and beyond to make sure I got it before Christmas thank you again

- BWTS30037B

Great product & well made I have a 2019 F250 & the 4.5" works perfect for all my trailers

- BWTS30037B

Exactly what i needed. On line consultant knew what i needed.

Show More Reviews

Ask the Experts about this B and W Trailer Hitch Ball Mount

  • Locking Pins for B&W Tow and Stow To Fit a 3 Inch Receiver Tube
    The B&W Tow & Stow 3-Ball Mount only needs one hitch pin lock, part # WS05 if you have a 5/8" hitch pin hole. The reason for this is that the hitch balls on the B&W Tow & Stow Ball Mount cannot be removed with the ball mount in the receiver tube due to the integrated channel. Therefore, it is not necessary to have locking hitch pins in the adjustment holes.
    view full answer...
    Image 1 for
  • Anti-Rattle Device For 3 Inch Ford F-450 Hitch Receiver
    I have an XL Anti-Rattle device # SHP2040-XL that will work with your 3 inch hitch accessories. This anti-rattle with work ONLY with hallow shanked accessories like the this B&W Adjustable Ball Mount # BWTS30037B.
    view full answer...
  • Does B&W Make a 2-Ball Ball Mount for a 3 Inch Receiver
    B&W does indeed offer a Tow & Stow 2-ball mount for a 3 inch receiver. Part # BWTS30040B includes a 2 inch and a 2-5/16 ball, and is adjustable up to a 7-1/2 inch drop or a 7 inch rise. Part # BWTS30037B also includes a 2 inch and a 2-5/16 inch ball and is adjustable up to a 4-1/2 drop or a 4 inch rise. I've linked to product description videos for both Tow & Stow ball mounts.
    view full answer...
  • Availability Of B&W Ball Mount For 3" Trailer Hitch Receiver
    We do! The available kits are the B&W Tow & Stow 3-Ball Mount - 3" Hitch - 7-1/2" Drop, 7" Rise - 21K - Black # BWTS30049B and B&W Tow & Stow 3-Ball Mount - 3" Hitch - 4-1/2" Drop, 4" Rise - 21K - Black # BWTS30048B. These two kits have a 1-7/8" ball with a 3500lb towing capacity, 2" ball with a 7500lb towing capacity, and 2-5/16" ball with a 21000lb towing capacity. The last kit is the B&W Tow & Stow 2-Ball Mount - 3" Hitch - 4-1/2" Drop, 4" Rise - 21K - Black # BWTS30037B which...
    view full answer...
  • Will Super Titan Ball Mount RP38180 Fit 3 Inch Hitch in Ford F-250
    While we have ball mounts that will work for your 2019 Ford F-250's 3 inch trailer hitch, the Draw-Tite Super Titan Dual Ball Mount # RP38180 is for Super Titan hitches with a 3/4" pin hole diameter, which is too large for your F-250's standard hitch. So what you would need is a ball mount with a standard 5/8" pin hole such as the Draw-Tite Ball Mount for 3" Hitches # 40700 or the adjustable B&W Tow & Stow 2-Ball Mount # BWTS30037B. To secure either ball mount to your hitch you'd...
    view full answer...

Do you have a question about this Trailer Hitch Ball Mount?

  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality trailer hitch ball mount for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer hitch ball mount information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jacob T
Video Edited:
Jacob T
Employee Cole B
Installed by:
Cole B
Employee Clayton O
Installed by:
Clayton O
Employee Chris R
Video by:
Chris R
Employee Amanda M
Written by:
Amanda M
Employee Hannah L
Updated by:
Hannah L
Employee Kristina F
Updated by:
Kristina F
Employee Mike S
Updated by:
Mike S
Employee Noah M
Updated by:
Noah M

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Product Experts Available Now!
Call 800-298-1624