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  1. Trailer Hitch Ball Mount
  2. Weigh Safe
  3. Adjustable Ball Mount
  4. Fits 2 Inch Hitch
  5. Drop - 8 Inch
  6. Rise - 9 Inch
Weigh Safe Hitch w/ Built-In Scale for 2" Hitch, 8" Drop/9" Rise, 12.5K, Aluminum
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Weigh Safe

Weigh Safe Hitch w/ Built-In Scale for 2" Hitch, 8" Drop/9" Rise, 12.5K, Aluminum

Part Number: WS29ZR
In Stock
$369.00
Trailer Hitch Ball Mount
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Here's your versatile solution for safe towing! This aluminum hitch has a built-in gauge for measuring tongue weight, comes with two stainless steel tow balls that swap out easily, and includes locking pins to keep everything securely attached. Great Prices for the best trailer hitch ball mount from Weigh Safe. Weigh Safe Hitch w/ Built-In Scale for 2" Hitch, 8" Drop/9" Rise, 12.5K, Aluminum part number WS29ZR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Weigh Safe Trailer Hitch Ball Mount - WS29ZR

Highlights

  • 12,500 lbs GTW for Heavy Loads: Handles large campers, boats, and equipment trailers with strength.
  • 8" Drop or 9" Rise for Level Towing: Adjusts trailer height to keep various trailers level and stable.
  • Built-In Tongue Weight Scale: Confirms your load balance instantly without separate scales or guesswork.
  • Dual Ball Sizes (2" & 2-5/16"): Lets you tow different trailers without swapping mounts.
  • Stowable Design for Clean Look: Folds under the truck when not in use to free space and avoid shin hits.
  • Corrosion-Resistant Aluminum & Steel Build: 6061-T6 billet aluminum and stainless balls resist rust and last.

Features to know about

Checks Load Balance Instantly: Built-In Tongue Weight Scale

Guessing tongue weight is a pain, and getting it wrong can make any tow feel sketchy. This hitch fixes that with a built-in gauge that automatically shows your trailer’s tongue weight the moment you couple up. No extra tools or scales needed—just hook up and read the measurement right on the ball mount. It’s a quick, reliable way to know your setup is balanced before you roll out.

Adapts to Different Trailers: Adjustable 8" Drop / 9" Rise

Not every trailer sits at the same height, and this mount makes it easy to swap between them. The platform slides along the 2" x 2" shank in 1" increments, giving you up to an 8" drop or a 9" rise. Locking dual pins keep it solid once set. Whether you’re towing a small utility trailer or something taller, it adjusts in seconds so everything stays level and stable.

Built for Real Towing Loads: 12,500 lbs GTW Strength

Heavy loads demand real strength. This one’s rated for 12,500 lbs gross towing weight on the 2-5/16" ball and 10,000 lbs on the 2" ball, with a maximum tongue weight of 1,500 lbs. The solid block 6061-T6 billet aluminum keeps it strong yet lightweight, and the stainless steel hitch balls are corrosion resistant and certified to SAE J684 and VESC V-5 standards for safe, dependable towing.

Stows Cleanly When You’re Done: Flip-Under Design

When you’re not towing, there’s no need to pull everything off the truck. Just remove the locking pins, flip the ball platform under the shank, and reinsert the pins. The balls tuck neatly underneath so there’s nothing to bump into or catch your leg on. It keeps your hitch ready for next time without cluttering up your bumper area.

Secures Your Setup: Keyed-Alike Locks Included

Keeping your gear safe matters as much as keeping it level. This hitch includes a receiver lock plus locking dual pins that secure both the shank and platform in place. All locks are keyed alike with four keys included, so one key set handles everything and helps deter theft when your hitch stays installed.

Specs

Application

  • Application: 2" x 2" trailer hitch receivers

Weight and Capacity

  • Gross towing weight (2-5/16" Ball): 12,500 lbs
  • Gross towing weight (2" Ball): 10,000 lbs
  • Maximum tongue weight: 1,500 lbs

Dimensions

  • Distance from center of hitch pin hole to center of hitch ball (closest to ball): 8-1/2"
  • Distance from center of hitch pin hole to center of hitch ball (farthest from ball): 9-5/8"
  • Maximum drop: 8"
  • Maximum rise: 9"
  • Incremental height adjustment: 1"

Warranty

  • Limited lifetime warranty

WS8-2-KA Weigh Safe 8" Drop Hitch w/ 2" Shank (10K/12.5K GTWR) w/ Locking Hitch Pin





Video of Weigh Safe Hitch w/ Built-In Scale for 2" Hitch, 8" Drop/9" Rise, 12.5K, Aluminum
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Weigh Safe Built In Scale Hitch 2 Stainless Steel Balls 2 Inch Receiver - WS29ZR

Hi, everybody. Andy here with etrailer.com. Let's take a look at this Weigh Safe built-in scale hitch with two stainless steel balls for your 2 inch hitch receiver. Now, this ball mount will slide into your 2 inch hitch receiver and you're gonna receive one 2 5/16ths inch ball and a 2-inch ball, and these balls are stainless steel. And this is also going to give you a maximum drop in this orientation of 8 inches. And then when you flip this over, you'll get a maximum rise of 9 inches.

And this has incremental adjustment of 1 inch. So you're gonna be able to get that height adjustability so you can tow trailers of different heights with the same vehicle. Now, when you use the 2 5/16ths inch hitch ball, the gross towing weight is going to be 12,500 pounds. With the 2 inch ball, it's gonna be 8,000 pounds and this has a maximum tongue weight of 1,500 pounds. And so, this features a tongue weight scale that is actually built into the ball mount platform.

So, this is going to help you balance your trailer for safer towing. The scale is gonna let you know if your load needs to be adjusted before you tow. And what's great about this, it's a very simple operation. This will automatically provide a measurement every time you couple your trailer. So this is efficient, it's hassle free.

It's gonna eliminate the need for separate or commercial scales. This also features a dual pin slider lock that's going to make adjusting the height very simple. So, I'm gonna remove this included rubber cover. This provided just to protect that keyway from dirt and debris. And I'm gonna tip this over so I can see.

I'm gonna use one of the keys here to turn it. And then, that's going to allow me to remove the dual pin slider lock. While I have this out, I wanted to show you that the pins here are aluminum along with the housing here. And then, our lock is plated steel. So this is durable, it's going to be corrosion resistant. It's gonna hold up really well for you. And so, with that removed you can see that I'm able to freely adjust this without any issues whatsoever. And I'm gonna go ahead and remove this. I also wanted to show you that this is stowable, so you could put it back like this and just line up the holes to replace the pins. And so when you're not needing to use this, as you can see, you can just put the ball back here and run those pins through and you're not gonna have to worry about damaging your shins when you are walking behind your truck. Now while I have this out, I wanted to show you how easy it was to swap out the balls here. So, I'm gonna go ahead and just tip that over a little bit. That's going to allow the pin to come right out. If the pin doesn't come right out like that, it does have a ring here where you can pull the pin out. And I'm gonna swap out my 2 5/16th inch hitch ball for the 2 inch ball. I'm gonna line up the holes just like that, and then replace the pin. (pin clinking) There we go. And make sure that ring is flush. And then, lemme bring my shank back in here. And then, now I can use the 2 inch ball and make the height adjustment that I need and be on my way. I'm gonna replace the pins here. (pins clinking) And what I really do like about this is you can see just how smoothly everything operates. You're not gonna be at the back of your vehicle struggling to make those adjustments or to change the ball size. You're gonna have everything adjusted the way that you need it in virtually no time at all. Now this hitch is constructive aircraft grade aluminum giving you superior strength and durability. The solid block construction's gonna give greater strength than a lot of hollow steel options while maintaining a light weight. This is going to be rust proof and the clean finish is going to stand the test of time. So, if you're gonna be around the water a lot with your truck or trailer, this is gonna be an ideal option for you to consider. It'd be great for boat trailers. Now, I also wanted to point out that this does include a locking hitch pin, and this is gonna be very simple to use. And you are going to get four keys, and all of these keys are keyed alike. So, the idea here is one key is going to be able to operate the hitch pin lock and the slider lock there, but you are going to get four. So, I'm gonna go ahead and unlock this. And what I like about this hitch lock is you don't need the key inserted into the head here to lock this back up. So, the head's already locked. And so, when you're ready to replace this and lock this into your trailer hitch receiver, all you gotta do is push it together and it's automatically locked. So, you don't need the key to lock that back up. And then just to give you some overall measurements, measuring from the center of our first hitch pin hole to the center of our ball, we're sitting at about 8 1/2 inches. Moving to the center of the second hitch pin hole to the center of the ball, 9 5/8ths inches. And then, from the center of the second hitch pin hole to the end of the shank, about 1 7/8ths inches. This is V5 J684 certified. And I think that's gonna wrap up our look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.

Customer Satisfaction Score:

Ratings & Reviews

4.9

131 reviews
5 Stars
(123)
4 Stars
(2)
3 Stars
(3)
2 Stars
(2)
1 Star
(1)
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by:
It's a beast! Heavy duty and everything fits together perfectly. Can't wait to haul my camper with it and see what my actual tongue weight is.
by:
Great product for being able too adjust the right height for those that have multiple trailers.
by:
Always fast delivery and items shows up perfectl.
by:
Awesome. Works PERFECTLY
by:
Excellent fit and finish and having the height adjustment is awesome! it's really nice to know how much weight I am putting on the hitch so I can adjust my load to optimize towing. Definitely would buy again!
by:
Great price and excellent shipping!!
by:
Perfect amount of height adjustability for GMC 3500
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I was very pleased with the fit and finish of the Weigh Safe hitch and scale. I also purchased a standalone tongue weight scale and was happy to see both of them give me very identical readings. I would like to see an additional pin on the height adjustment pin so it’s not relying solely upon the key lock. I would certainly recommend this hitch for someone that wants to know their trailer tongue weight. Will definitely cut down my trips to the CAT scale and provide a more accurate measurement. I can also move weight around and see direct results on the tongue.
by:
I downloaded the APP. It took me awhile to figure out how the App work. I think I have it figured out now. It would be nice to give a QR code to a video on how the APP set up works. The Hitch overall is made very well.
by:
I haven't towed with it yet, but out of the box very impressed. It weighs in at approx 18 lbs, so rugged. Using on a 2022 RAM 2500. I was concerned because some drop hitches don't fit well in RAMs due to the rounded corners in the receiver. This one fit perfectly. Shipping was great. Packaging was great. I expect it will tow just fine.
by:
Received my new hitch today and can’t be happier with the build quality. Excellent customer service! Can’t wait to test it out on our next trip.
Lazer S. profile picture
Etrailer Expert

Lazer S.

1/27/2026

Glad you like it, JT! What is the next trip you have planned?

by:
I use this to haul a car on a trailer with my Rv and tongue weight is very important because I don't want to flex the frame, my rv has a very long distance from the axel to the bumper. And with this hitch I am able to place the car on the trailer and know the tongue weight for each position I put the car in. I was able to level the trailer as well. This hitch is well made.
by:
The weight scale is not registering the tongue weight. It stays on zero.
by:
I've used this for 12 months on a wide range of trailers 3000-15,000# and it's a great product. At the Cat Scale last week I checked the tongue weight at 1300# on the gauge and it was correct. The range of heights is great with trailers from car carrying box trailer to very tall ag trailer, it works with my 1 ton for all. The light weight makes it easy to mount and dismount 1 handed.
by:
I am really impressed with the quality of the Weigh Safe. Although I haven’t used it yet I think it will perform better than my last hitch that almost failed. I will update after I use it.
Mike L. profile picture
Etrailer Expert

Mike L.

8/17/2026

Please do, we'd love to hear what you think!

by:
No complaints ! Everything from before purchase, to using the hitch has been how all of American business should operate. Thank YOU
by:
Quality product. Much lighter and easier to handle than comparable steel hitch. Scale seems to be accurate based on camper loading and advertised dry tongue weight.
by:
Great product and easy to use. Takes the guess work out of calculating the tongue weight.
by:
The hitch is very high quality, no questions it’ll take the full 12,500lbs is rated for. etrailer customer service and shipping is another story, arrived rattling around in a cardboard box with no package material. The lock kit box was absolutely destroyed but fortunately the lock was undamaged. UPS delivery because the shipping label came off. I tried contacting etrailer by email twice because UPS kept telling me my package was damaged, never heard a thing back. Luckily my driver figured out it belonged to me and was able to get the box relabeled.
by:
I'm very pleased with the weigh-safe hitch. it exceeds all my expectations. extremely well built and it is extremely heavy duty which is what I was looking for. I will be using it for years.
by:
Best trailer hitch ever purchased. Worth every penny.
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See what our Experts say about this Weigh Safe Trailer Hitch Ball Mount

  • Adjustable Ball Mount with Sway Control
    Hi David, I completely understand why you’re asking. Those white knuckle moments are not fun. With the Weigh Safe hitch part # WS29ZR, there unfortunately isn’t a safe way to add a friction sway control “wing” bracket. That adjustable ball mount was not designed with a sway control tab, and because of how the aluminum ball platform is built there is not a safe place to add one. I think you would be much happier with a full weight distribution system like the Weigh Safe True Tow weight...
    view full answer...

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