1. Trailer Hitch Ball Mount
  2. B and W
  3. Fits 3 Inch Hitch
  4. Adjustable Ball Mount
  5. Drop - 7-1/2 Inch
  6. Rise - 7 Inch
B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise - 21K - Black

B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise - 21K - Black

Item # BWTS30040B
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Our Price: $349.00
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Trailer Hitch Ball Mount
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Shipping Weight: 37 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 -7-1/2" Drop, 7" Rise - 21K - Black part number BWTS30040B can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (1990)
  • Q & A (12)
  • Photos
  • Used (1)
  • Why etrailer?

B and W Trailer Hitch Ball Mount - BWTS30040B

  • Fits 3 Inch Hitch
  • Adjustable Ball Mount
  • Drop - 7-1/2 Inch
  • Rise - 7 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: 7-1/2"
  • Maximum rise: 7"
  • 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

TS30040B B and W Stow and Tow Dual Ball Mount - Model 8 - 2" Ball and 2-5/16" Ball - Black

California residents: click here

Customer Reviews

B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise - 21K - Black - BWTS30040B

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.

- BWTS30040B

Ordered the incorrect shank diameter and drop length. Service representative was knowledgeable of the item I needed, placed the order for the new one, explained the return procedure to include emailing the return authorization, all done in a friendly, professional attitude. Received the correct receiver hitch within one day. Representative made a mistake on my part as painless as possible.

Jim - 03/20/2021

- BWTS30040B

I already had the 2.5" version and loved it. I gave that one to an employee and got the 3" version as that one fits with out the sleeve. It is a lot money for a ball and mount but its worth it. Gives you easy versatility to get your trailer level and its built like a tank.

- BWTS30040B

I bought this B&W hitch to be a exact fit for my truck. This is the second B&W that I have purchased. Both have been well built. Best adjustable hitches that I have ever owned. Very Happy With them etrailer had the best price of anyone locally. Ordered Saturday, I received an Email Sunday that my order was Processed, and that it was ready for shipping. It arrived four days later. Thank You Will order from you again.

This is a excellent well built hitch. Adjustable for the different trailers that I pull. I bought the correct size hitch pin this time and have no complaints.
David D - 07/14/2020

- BWTS30040B

You guys are awesome, informed me on every step of the process from receiving the order to delivery. This hitch works great with the ford Tremor.

- BWTS30040B

Great customer service,my tow and stow was on backorder.They went above and beyond and kept me notified on my parts of when they were in stock and when they’d be shipping.Before you know it,my parts were sitting at my front door.I will deff be ordering more from them.

- BWTS30040B

Am yet to use it but it sits well and looks sturdy.

- BWTS30040B

Great customer service. They quickly replaced a pin clip that was bent during shipment. I purchased from them before and they will always be my preferred shopping stop for my towing needs. Best web pricing and great service. An awesome combination.

- BWTS30040B

Great service, the hitch was on back order and they quickly offered in stock replacement options, i chose to wait for what i ordered it still came quickly and etrailer was good about updates to my order in the meantime

- BWTS30040B

We like the product, Reliable Hitch. Th anks.

- BWTS30040B

Sto and go can't be beat! Perfect ride height evey time.

- BWTS30040B

When I was shopping for a multi size ball mount I only looked seriously at B&W. They make a high quality product that does exactly what it is supposed to do. I have a 5th wheel B&W hitch and am absolutely sold on the brand. Made in America.

- BWTS30040B

only hitch you need tons of adjustment no need for different hitches for different trailer heights

- BWTS30040B

Excellent product B&W have been in the towing business a long time. Knew I would get a quality product. I think it was a better option than getting sleeves for the new 3 in. hitch. Will be used to haul a 22' deck over tilt with skid loader and sea containers.

- BWTS30040B

The Tow & Stow hitches are an excellent product.

- BWTS30040B

great customer service on time delivery, thanks Marco

- BWTS30040B

Great product and quick delivery!

- BWTS30040B

Excellent product, fast shipping

- BWTS30040B

These are the best thing since sliced bread! I have now have 4 of these on my trucks and over the last year they have stood up to every heavy load I have latched on to them. I highly recommend them if you have different trailers to pull with different tong heights and ball sizes.

- BWTS30040B

I've had this hitch for a year and still love it!

- BWTS30040B

Excellent product!

- BWTS30040B

Love my new BW hitch. Great product and excited for the extra towing capacity.

- BWTS30040B

Excellent customer service and super fast shipping! Lifelong customer with etrailer Corporation!

- BWTS30040B

The only thing that was better than this B&D Tow and Stow Hitch from etrailer was the Customer Service that they provided. They checked on my purchase one year after I bought it to make sure we were still satisfied. Good Team. Keep it up guys.

- BWTS30040B

Very well built. It works well. I still wonder if I should have gotten the one that doesn’t drop down as far as I’m concerned that sooner or later I’ll catch it on something. It does allow me to tow one trailer level that would otherwise be tilted back some.

- BWTS30040B

Just received the hitch today only 2 days after placing the order. Looks awesome on the truck. Have yet to actually put it to use but have no doubt it will exceed my expectations. I will do an update at a later date.

Show More Reviews

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

  • What Hitch Pin Diameter Does B&W Tow & Stow 2-Ball Mount # BWTS30040B Use
    3 inch hitches like what the B&W Tow & Stow 2-Ball Mount # BWTS30040B was designed for use the same hitch pin diameter as the smaller 2 inch and 2.5 inch hitch size which is 5/8 inch diameter. For a locking hitch pin to use with this we have the Weigh Safe part # WS05 which would work great. I attached review videos for the hitch lock and the ball mount for you to check out as well.
    view full answer...
  • Recommended Ball Mount for 2017 Ford F-250 with 3 Inch Hitch Receiver
    In order to determine how much drop you need, you will measure from the top inside edge of your trailer hitch receiver on your 2017 Ford F-250 to the ground. Then you will measure from the ground to the bottom of your trailer coupler when it is level. The difference between these measurements is the drop you need. I've attached an article to assist and have linked 3 inch ball mount options. I personally recommend the B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise -...
    view full answer...
  • Hitch Lock Recommendation for 3 inch Trailer Hitch of 2018 Ford F-350
    For a hitch lock to fit a 3 inch trailer hitch like what you have you would want the Weigh Safe Hitch lock part # WS05. This lock is designed to fit the larger 3 inch hitch size you have so it would work well. It also will work well with the B&W Tow & Stow 2-Ball Mount # BWTS30040B that you referenced.
    view full answer...
  • Height of B&W Tow & Stow 2-Ball Mount BWTS30040B
    The B&W Tow & Stow 2-Ball Mount part # BWTS30040B measures 11.125" from the top of the vertical rail to the bottom.
    view full answer...
  • Recommended Made In USA Ball Mount for 3" Hitch
    I have some great options that check all the boxes; 3" hitch, 2-5/16" hitch ball, 6" drop, and made in the USA. I have attached these for you below but bear in mind they are all adjustable. 180 Hitch 2-Ball Mount w/ Stainless Balls part # LTB6-3 BulletProof Hitches Adjustable 2-Ball Mount part # HD306 B&W Tow & Stow 2-Ball Mount part # BWTS30040B Gen-Y Adjustable 2-Ball Mount part # 325-GH-1723 I recommend the B&W Tow & Stow due to the stowaway feature.
    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...
  • Adjustable Ball Mount for 3 Inch Hitch on 2018 Ram 2500
    We do have adjustable ball mounts that fit the 3" hitch on your 2018 Ram 2500 but there is not an option for an adjustable ball mount from Curt at this time; instead I strongly recommend checking out the B&W Tow & Stow 2-Ball Mount # BWTS30040B. The Tow & Stow will fit your 3" hitch and will give you a maximum drop of 7-1/2" and maximum rise of 7". It comes with a 2" hitch ball that has a maximum capacity of 7,500 lbs and a 2-5/16" hitch ball with a maximum capacity of 21,000 lbs. The...
    view full answer...
  • High Capacity Trailer Hitch Recommendation for 2018 Ram 5500
    The Curt hitch part # C15800 is the highest capacity hitch we offer for your 2018 Ram 5500 cab and chassis. The hitch has a 20,000 lb trailer capacity and a 2,700 lb tongue weight capacity. The hitch is also made in the USA and has a 2-1/2 inch hitch opening which is very common for heavy duty ball mounts like what you'd need. For and adjustable ball mount with two hitch ball sizes we have the B&W Tow and Stow part # BWTS30040B which has a 21,000 lb towing capacity.
    view full answer...
    Image 1 for
  • Can Rock Tamer for 3 inch Hitch be Used with B and W Tow n Stow Ball Mount for 3 inch Hitch
    Yes a Rock Tamer Mud Flap for 3 inch hitch part # RT54FR would have enough clearance to fit on the B and W Tow n Stow for 3 inch hitches part # BWTS30040B.
    view full answer...
  • Recommended Hitch Lock and Ball Mount Compatible with 3 Inch Hitch with Reducer Sleeve
    The Flash E Series Adjustable 2-Ball Mount w Chrome Balls # FA42-00-2800 has a 5/8 inch pin hole diameter. I believe you will be able to use the Fastway Trailer Hitch Lock and Adjustment Pin Lock Set for Flash E Series Ball Mounts # FA86-00-3660 for a locking combination. The hitch lock is 3-5/8 inches from inside to inside so as long as your 3 inch receiver is under that 3-5/8 at the outer edges you will be fine. You can alternatively use the Draw-Tite Trailer Hitch Lock - 3" Hitch...
    view full answer...
  • Adjustable Ball Mount Recommendation for 3 inch Hitch that Has Two Balls
    For an adjustable ball mount with 2 hitch balls that fits a 3 inch trailer hitch like what you have you'd want the B&W Tow & Stow part # BWTS30040B which comes with a 2 inch and 2-5/16 inch hitch ball and a 21k capacity when used with the larger ball size.
    view full answer...
  • Weight of Weigh Safe 180 Hitch 2-Ball Mount # LTB6-3
    The Weigh Safe 180 Hitch 2-Ball Mount # LTB6-3 has a total weight (with the ball platform attached) of just 22 pounds. The shank by itself is only 8 pounds. You are right that the aluminum shank allows it to weigh less than all steel options such as the B&W Tow and Stow # BWTS30040B that weighs closer to 40 pounds. I have attached a short video demonstration that you can check out as well.
    view full answer...

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

Used Items Available
Used Picture for B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise - 21K - Black
Used Picture for B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise - 21K - Black
Used Picture for B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise - 21K - Black
Used Picture for B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise - 21K - Black
Used Picture for B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise - 21K - Black
Used Picture for B&W Tow & Stow 2-Ball Mount - 3" Hitch -7-1/2" Drop, 7" Rise - 21K - Black

Condition: Badly Dinged

Notes: Has some surface damage to the finish and dings on the corner. Missing one pin clip.

Our Price: $303.10
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Info for this part was:

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