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  1. Trailer Hitch Ball Mount
  2. B and W
  3. Adjustable Ball Mount
  4. Fits 2-1/2 Inch Hitch
  5. Drop - 8 Inch
  6. Rise - 9 Inch
B&W Tow & Stow 2-Ball Mount - 2-1/2" Hitch - 8-1/2" Drop, 9" Rise - 18K - Black
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B and W

B&W Tow & Stow 2-Ball Mount - 2-1/2" Hitch - 8-1/2" Drop, 9" Rise - 18K - Black

Part Number: BW78SR
In Stock
$389.00
Trailer Hitch Ball Mount
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etrailer Installation
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Stow the ball and mounting platform on this double-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 18,000 lbs with the 2-5/16" ball. Great Prices for the best trailer hitch ball mount from B and W. B&W Tow & Stow 2-Ball Mount - 2-1/2" Hitch - 8-1/2" Drop, 9" Rise - 18K - Black part number BW78SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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B and W Trailer Hitch Ball Mount - BW78SR

Highlights

  • 18,000 lbs GTW for Big Loads: Handles heavy trailers, campers, and boats up to 18,000 lbs.
  • 8-1/2" Drop or 9" Rise for Level Towing: Matches trailer height to keep loads even and stable.
  • Two Ball Sizes in One Mount: 2" (7,500 lbs) and 2-5/16" (18,000 lbs) balls fit different trailer couplers.
  • Flip-Under Stow Design: Turns the ball under the hitch to avoid shin bumps and keep a clean look.
  • Anti-Theft Channel Design: Platform can’t be removed when installed, adding built-in trailer security.
  • Corrosion-Resistant Finish: Dual-process chrome on balls and black powder coat resist rust and road grime.
Made in USA

Features to know about

Keeps Every Trailer Level: 8-1/2" Drop and 9" Rise

When you’re towing different trailers, matching coupler heights is everything. This mount adjusts anywhere between an 8-1/2" drop and a 9" rise, so each trailer rides level and stable. The 1-3/8" incremental height adjustment makes dialing in the perfect setup quick and accurate, whether you’re pulling a camper or an equipment hauler.

Handles Serious Weight: Up to 18,000 lbs GTW

Heavy loads need serious strength, and this steel setup delivers it. The 2-5/16" ball handles up to 18,000 lbs gross towing weight with a 1,800-lb tongue rating, while the 2" ball covers smaller jobs up to 7,500 lbs GTW. Its high-yield tubing and stainless steel pins form a solid connection that stays tight mile after mile.

Frees Up Space When You’re Done Towing: Stowable Design

No more banging into a hitch when you’re walking behind your truck. When the job’s done, remove the pins, flip the platform under the receiver, and secure it in place. The Tow & Stow design keeps everything neat under the bumper so you can leave it installed without it getting in the way.

Built to Last Through Weather and Road Grime: Dual-Process Chrome and Black Powder Coat

Rust and corrosion can ruin a hitch fast, but this one’s built to shrug it off. The balls are dual-process chrome plated for excellent rust resistance, and the shank is finished in a durable black powder coat. Together they hold up against salt, rain, and long hauls on rough roads.

Secures Your Setup: Built-In Anti-Theft Design

Once this ball mount is locked in your receiver, the platform can’t be removed from the shank. The channel design keeps everything captive inside when installed, so even if someone pulls the pins, the platform stays locked in place. Add a hitch lock at the receiver and your gear stays where it belongs.

Illustration showing 11-inch ground clearance requirement for a B&W Tow & Stow adjustable trailer hitch mount.

Specs

Application

  • Application: 2-1/2" x 2-1/2" trailer hitch receivers

Weight and Capacity

  • Gross towing weight (when used with 2" ball): 7,500 lbs
  • Gross towing weight (when used with 2-5/16" ball): 18,000 lbs
  • Gross tongue weight (when used with 2" ball): 750 lbs
  • Gross tongue weight (when used with 2-5/16" ball): 1,800 lbs

Dimensions

  • Distance from center of hitch pin hole to center of hitch ball (closest hole): 9-3/8"
  • Distance from center of hitch pin hole to center of hitch ball (farthest hole): 10-1/2"
  • Maximum drop: 8-1/2"
  • Maximum rise: 9"
  • Incremental height adjustment: 1-3/8"

Diagram showing how to measure drop and rise on a B&W Tow & Stow adjustable trailer ball mount, including measurement arrows and labeled dimensions.

Warranty

  • Limited lifetime warranty

Note

To avoid the Tow & Stow hitting steep driveways or curbs, we recommend at least 11" of clearance between the ground and the lowest point of the drop hitch, as seen above.

TS20043B B and W Tow & Stow 2-Ball Mount - 2-1/2" Hitch - 8-1/2" Drop - 9" Rise - 18K - Black





Video of B&W Tow & Stow 2-Ball Mount - 2-1/2" Hitch - 8-1/2" Drop, 9" Rise - 18K - Black
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Feature Breakdown: B and W Tow & Stow 2-Ball Mount

Hello, neighbors and friends, Steven here with etrailer.com. Let's take a look together at our B&W Tow & Stow two ball mount for a 2 1/2 by 2 1/2 shank hitch rated to 18,000 pounds in a nice black color. Now folks, starting off, I wanna let you know this has a maximum drop of 8 1/2 inches from the top here, and a maximum rise if it was flipped over of nine inches. It also has incremental height adjustments of 1 3/8 inches in between center to center, and the 2 5/16 ball here has a tongue weight of 1800 pounds and a towing capacity of 18,000 pounds. The two inch ball on the bottom here right now has a tongue weight of 250 pounds max, or a max tow weight of 7,500 pounds. So getting into it, I'll step aside so you can see a little better.

You got two hitch pin holes here on the top, and you have a distance from the center of that closest one to the center of 9 3/8 inches. And from the center to the farthest one away of 9 3/8 inches. I'm sorry, the farthest one is 10 1/2 inches. Now this is a, like I said, stowable design. So I'll go ahead and spin it around here real quick before we stow it.

But pretty simply, all you're gonna do is pull out these back two pins here, and this unit will flip underneath and stow out of the way. So right now we're sticking out, we're done towing, and we wanna make sure that we're not busting our shin as we're walking into this thing on the side of the vehicle and that kind of stuff. Simply pull out the pins again, this will be hanging up on your vehicle. You simply rotate down and backwards. (metal clinging) And then all you have to do is put the pin back in the correspondent holes.

And then you're ready to keep going down the road in a stowed position. So obviously I didn't put 'em back in all the way. I just wanna show you that they can stow. I'm gonna go ahead and fold it back over. (metal clinging) And we're gonna go ahead and put the pins back in.

So pretty simple to flip over. It's got that slot in there so it's not just gonna fall off the bottom or anything like that, so you don't have to be scared of it dropping on your foot. Now there are no additional locks required, 'cause because again, there's no way they can get this off the unit. So the only lock you would wanna buy probably is your hitch pin lock and there's no hitch pin included. That is sold separately. So I do recommend buying a lockable hitch pin just to protect your investment. It is made here in the US with a nice limited lifetime warranty by B&W. The pins there and the ball are stainless steel, and they're gonna be rust resistant. Everything else is a nice steel construction, and it's got a high yield tubing here for superior strength. Now that ball is also chrome plated on the outside to give you another level of rust resistance. Now let's say you want to switch balls to a different size ball. Well, that's simple too. You simply pull the pin here, pull the other pin, and you would simply just rotate it down, and replace the pin into the hole, and now you're using the two inch one. So it really is pretty versatile. B&W does a good design, good job designing these and making 'em user friendly and being able to use on multiple vehicles, multiple trailers without having to worry about, you know, getting a different ball mount for each one and that kind of thing. So it's very nice design and everything. Well, folks, I think that we'll wrap it up for our look today at this B&W Tow & Stow ball mount again for a 2 1/2 by 2 1/2 inch hitch ready to 18,000 pounds capacity. I'm Steven, thanks so much for your time. Thanks for watching and have a great day.

Customer Satisfaction Score:

Ratings & Reviews

4.9

4934 reviews
5 Stars
(4595)
4 Stars
(224)
3 Stars
(35)
2 Stars
(20)
1 Star
(60)
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by:
Package arrived on time and looks amazing in my Ram 2500 , Thanks again
Kate F. profile picture
Etrailer Expert

Kate F.

11/19/2025

Can't go wrong with B&W, you will have that hitch for life Floyd! Looks great on your truck =)

by:
I like the hitch but wish more effort was made to warn potential buyers of the ground clearance issues. I have a 2022 F250 and this 8.5" drop has less than the 11" recommended clearance before the ball is set to the lowest level. Now I have to pay for return shipping.
by:
The hitch itself is great. I've had one before and this is a replacement for a wrecked truck. Can't say more about this hitch. It would have been nice if UPS didn't lose it on the way but that is not the retailers fault at all. Excellent customer service from etrailer
by:
This saves me a lot of time from changing ball sizes for my landscaping and 10000-pound equipment trailers
by:
Perfect….quality drop hitch.
Dealing wit
h etrailer, means customer satisfaction.
by:
Haven't towed with it yet. Build quality is 5 stars. E trailer is 5 stars.
by:
All companies should be like eTrailer!! From the time you purchase you feel like they care, they email and update you every step of the way. Many items I would buy from manufacturer but instead buy from eTrailer because of their customer service. Keep up the good work!

Oh and the hitch is great have not used yet but looks great and have no issues.
by:
Haven't used it yet. But the quality and ease is awesom.
by:
Installed this and there wasn't as much play as others I've tried and returned. I like that you can pin this back too.
Brooke M. profile picture
Etrailer Expert

Brooke M.

6/27/2025

Sweet! Glad to hear you're happy with it. People joke about how much the stow feature saves their shins, haha

by:
SO FAR ONLY ONE CAME TODAY
by:
Paul profile picture

Paul

7/1/2026

This was ordered by me by mistake, which your team pointed out that I really needed the B&W Tow &amp Stow 2-Ball Mount - Compatible with GM MultiPro Tailgate - 2.5 Hitch - 18K which I then purchased...see my review over on that unit...: https:www.etrailer.comTrailer-Hitch-Ball-MountB-and-WBWTS20066BMP.html.

by:
i love the flush mount its not setting my sensers off
by:
awesome product can’t wait to use it
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Show More Reviews

See what our Experts say about this B and W Trailer Hitch Ball Mount

  • How Far Down Does B and W Tow and Stop 2 Ball Mount BW78SR When in Lowest Position
    Hey Steven, if you had the B and W Tow and Stow 2 Ball Mount part # BW78SR in it's lowest position it would be 12-1/2 inches from the top of your hitch opening. So measure from the top of your hitch opening down to the ground and as long as that distance is 23-1/2 inches or more you'd have the minimum 11 inches of clearance that you are needing. What are you planning on towing?
    view full answer...
  • What Adjustable Hitch do I Need for My 2019 GMC Denali HD2500 Diesel with 10" Lift?
    Hello Enrique, You asked about the B&W Tow & Stow 2-Ball Mount # BWTS20066BMP. This will connect to a trailer coupler just fine, but it cannot be used with a gooseneck hookup. The stock hitch height on a 2019 GMC Denali HD2500 is typically around 21–22". With a 10" lift, you're actually sitting between 29–32". Since the average trailer coupler height is 16–18", that puts you at about a 16" drop for level towing. To accommodate this, you’ll need the BulletProof Hitches 2-Ball Mount for...
    view full answer...
  • Ball Mount for 2023 Ram 2500 Towing Cattle Trailer
    Hi Charles; based on your measurements you need an 8-3/4" drop for your ball mount. Do you want a fixed ball mount? Assuming you do, you can use the Curt Ball Mount for 2" Hitches - 7" Rise, 8-1/4" Drop # C45338. This has a 10,000 lb capacity so it will be able to handle the trailer with animals. For a 2" ball you can use the # A-90. If you would prefer an adjustable ball mount I recommend the B&W Tow & Stow 2-Ball Mount # BW78SR which will fit your hitch without an adapter.
    view full answer...
  • Recommended B&W Tow & Stow 2-Ball Mount for a 2011 Ford F-250 w/a Factory Hitch
    Hey Rick. My information has the factory hitch on the 2011 Ford F-250's being a 2". The B&W Tow & Stow 2-Ball Mount item # BW78SR, you were looking at fits a 2-1/2" hitch receiver. We have the same ball mount available for a 2" receiver. It is the B&W Tow & Stow 2-Ball Mount item # BWTS10043B. Both of these ball mounts have a 18,000 lbs capacity and have both a 2" and 2-5/16" hitch ball. They also have the same tow and stow feature that allows you to flip the ball mount around while...
    view full answer...

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


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Steven C
Installed by:
Steven C
Employee Daniel M
Installed by:
Daniel M
Employee Chris R
Video Edited:
Chris R
Employee John S
Video Edited:
John S
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Ryan F
Written by:
Ryan F
Employee Samuel H
Video by:
Samuel H
Employee Evan R
Video by:
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Employee Kurt W
Test Fit:
Kurt W

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