1. Trailer Hitch Ball Mount
  2. B and W
  3. Adjustable Ball Mount
  4. Fits 3 Inch Hitch
  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

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Trailer Hitch Ball Mount
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Shipping Weight: 34 lbs
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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.
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  • Videos (1)
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  • Why etrailer?

B and W Trailer Hitch Ball Mount

  • Adjustable Ball Mount
  • Fits 3 Inch Hitch
  • Drop - 4-1/2 Inch
  • Rise - 4 Inch
  • B and W
  • 2 Inch Ball
  • 2-5/16 Inch Ball
  • Two Balls
  • Class V
  • 21000 lbs GTW
  • 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"
  • Limited lifetime warranty

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

Item # BWTS30037B

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 Ball Mounts - Adjustable Ball Mount - BWTS30037B Review

Speaker 1: Today we're taking a look at the B&W Tow & Stow Two-Ball Mount for 3" hitches. Now this ball mount with a built in hitch ball lets you hook up your trailer to your tow vehicle. The shank slides into the receiver tube of your hitch. The hitch balls provide the connection point for your trailer coupler. It can be used in either the drop or rise positions. This would be the drop position, and this would be your rise position.

It also features a stowable design that lets you store the balls in the mounting platform, underneath the receiver tube of your hitch or on the reverse side here of the face of the ball mount.To get it to a stowed position I always like to make sure that the hitch balls are rotated. To do that we simply pull out a pin and clip and this is also how you switch between the two differently sized balls. For the stowed position I like to put it in this position right here. I just feel it gives us the most amount of clearance when in the stowed position. To secure it in that position we'll just place back in the pin and clip.

Then we'll remove the other two pins and clips and then we can rotate the unit to the back side.Now this creates a really nice flush design at the back of your vehicle. It also takes the balls and the platform and gets them out of the way. That way when you're walking around the back of the vehicle, you don't accidentally run into the hitch balls and hurt your leg. That's also an added feature to the unit. That stays on there, so it has a catch in that groove.

That way that doesn't accidentally come off. Also that slot in the shank ensures that the ball mount platform can't be removed when the tow and stow is installed in the hitch. There's no additional locks required to prevent the platform and the balls from being removed.It's got the adjustable height design, so that's going to let you tow trailers of different heights using the same vehicle. This can adjust up and down the shank. You find the height that you need for your application and secure it in place by installing the pins and clips.

Then you need to decide which hitch ball you need. You have a 2" and a 2-5/16". It's a nice easy to use design. The adjustability is a really great feature of the unit. That's going to allow you to tow trailers with different heights using the same vehicle and again it helps you ensure that you're towing set up is as level as possible.Now the two differently sized hitch balls lets you tow trailers with different coupler sizes. These are steel construction with dual process chrome plating to resist rust and corrosion. Everything else has a black powder coated finish on it to resist rust and corrosion. The unit uses stainless steel pins to create sturdy rustproof connection points. It's a durable steel construction with high yield tubing. It offers superior strength and durability.To get it secured in your hitch you will need a hitch pin and clip or a hitch lock. Those items are sold separately and available at etrailer.com. This is designed for a 3" trailer hitch receiver. The gross towing weight when using the 2" ball is 7,500 pounds. When using the 2-5/16" ball it's 21,000 pounds. The distance that we have from the center of the hitch pin holes to the center of the hitch balls, from the closest one is 9-1/4", to the rear one is 10-3/8". Now you can use whatever one you need or whatever one works best for your application.When using this in the drop position with the mount at the lowest setting it gives you a maximum drop of 4-1/2". That's from the inside top edge of the receiver tube of your hitch to the top of the ball platform. When using the rise position, with it at the highest setting, that'd give you a maximum rise of 4". Then the incremental height adjustment is 1-3/8". That's the distance we have center on center between our adjustment holes. The product is made in the USA and covered with a limited lifetime warranty.That's going to do it for today's look at the B&W Tow & Stow Two-Ball Mount for 3" hitches.

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   (1470 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

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

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

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

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

- 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

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

- 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

product was delivered on time and package was in great shape

- BWTS30037B

Great product

- BWTS30037B


- BWTS30037B

- BWTS30037B

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

- BWTS30037B

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

- 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.

- BWTS30037B

- BWTS30037B


- BWTS30037B

- 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

- BWTS30037B


- BWTS30037B

Very Satisfied

- BWTS30037B

Installed on 2017 F350. Great quality, easy setup and wonderful customer service. Would definitely recommend.

- BWTS30037B


- BWTS30037B

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

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...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Cole B
Installed by:
Cole B
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

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