1. Trailer Hitch Ball Mount
  2. Weigh Safe
  3. Fits 3 Inch Hitch
  4. Adjustable Ball Mount
  5. Drop - 8 Inch
  6. Rise - 8 Inch
Weigh Safe 2-Ball Mount w/ Built-In Scale - 3" Hitch - 8" Drop, 8" Rise - 21K

Weigh Safe 2-Ball Mount w/ Built-In Scale - 3" Hitch - 8" Drop, 8" Rise - 21K

Item # WS8-3
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Our Price: $349.00
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Trailer Hitch Ball Mount
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Shipping Weight: 23 lbs
Weigh Safe Adjustable Ball Mount - WS8-3
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Measure your tongue weight to determine if you can safely tow by simply coupling your trailer to this ball mount. Ball platform locks to shank. Tow up to 8,000 lbs with the 2" ball and up to 21,000 lbs with the 2-5/16" ball. Lowest Prices for the best trailer hitch ball mount from Weigh Safe. Weigh Safe 2-Ball Mount w/ Built-In Scale - 3" Hitch - 8" Drop, 8" Rise - 21K part number WS8-3 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (816)
  • Q & A (6)
  • Photos
  • Why etrailer?

Weigh Safe Trailer Hitch Ball Mount - WS8-3

  • Fits 3 Inch Hitch
  • Adjustable Ball Mount
  • Drop - 8 Inch
  • Rise - 8 Inch
  • Weigh Safe
  • Two Balls
  • Class V
  • 21000 lbs GTW
  • Built-In TW Scale
  • Aluminum Shank - Silver
  • Stainless Steel Ball

Measure your tongue weight to determine if you can safely tow by simply coupling your trailer to this ball mount. Ball platform locks to shank. Tow up to 8,000 lbs with the 2" ball and up to 21,000 lbs with the 2-5/16" ball.


  • Ball mount with included hitch balls lets you hook up your trailer to your tow vehicle
    • Shank slides into hitch receiver
    • Ball provides connection point for trailer coupler
  • Tongue weight scale built into the ball mount platform helps you balance your trailer
    • Promotes safe towing - lets you know if your load needs to be adjusted before you tow
    • Simple operation - automatically provides a measurement every time you couple your trailer
    • Efficient and hassle-free - eliminates the need for separate or commercial scales
  • Adjustable height lets you tow trailers of different heights with the same vehicle
    • Slide ball mount platform up or down shank and secure in place with included dual locking pins
      • 2 Keys are included
  • 2 Different-size hitch balls let you tow trailers with different coupler sizes
    • To switch ball, simply remove the ball-retaining lock pin from the platform, insert ball, and reinsert pin
  • 6061 T6 billet aluminum shank and mounting platform provide superior strength and durability
    • Solid block construction provides greater strength than hollow steel competitors while also maintaining a light weight
    • Rustproof for a clean finish that stands the test of time
  • Stainless steel hitch balls are corrosion resistant
  • Hitch pin and clip or hitch lock sold separately
  • SAE J684 certified and VESC Regulations V-5 compliant
  • Made in the USA


  • Application: 3" x 3" trailer hitch receivers
  • Gross towing weight:
    • 2-5/16" Diameter hitch ball: 21,000 lbs
    • 2" Diameter hitch ball: 8,000 lbs
  • Tongue weight: 2,200 lbs
  • Distance from center of hitch pin hole to center of hitch ball: 8-3/4"
  • Maximum drop: 8"
  • Maximum rise: 8"
  • Incremental height adjustment: 1"
  • Scale gauge diameter: 1-1/2"
  • Warranty:
    • Limited lifetime for ball mount
    • 1-Year limited for scale gauge

Weigh Safe ball mount coupled to a trailer

This Weigh Safe ball mount has an easy-to-use, built-in scale that measures your trailer's tongue weight every time you tow. If the scale indicates that your tongue weight is too low or too high, you can adjust it before you head out so that you can complete your journey with the peace of mind that your setup is safe.

What is Tongue Weight?

Tongue weight (TW) refers to the weight that the fully loaded trailer exerts downward on the hitch ball of the tow vehicle. Tongue weight is typically 10 percent - and should not exceed 15 percent - of your gross trailer weight. For example, a 10,000-lb trailer should have a tongue weight between 1,000 lbs and 1,500 lbs. You can adjust the tongue weight of your trailer by removing or adding cargo, or redistributing the load on the trailer. The tongue weight should not exceed the capacity of your tow vehicle, your hitch, or any of your towing components.

Why is Tongue Weight So Important?

Weigh Safe helps ensure proper trailer tongue weight

Simply put, too little tongue weight can cause trailer sway and too much tongue weight can cause the tow vehicle to perform poorly. You may have difficulty steering, gaining traction, or braking when driving a setup that has too much weight pushing down on the rear of the vehicle. Ultimately, towing with an improper tongue weight can cause you to lose control of your vehicle or cause your trailer to separate from the vehicle.

Built-In Tongue Weight Scale

The gauge of the Weigh Safe built-in tongue weight scale

The Weigh Safe ball mount's built-in scale signals you to adjust your load before you hit the road, resulting in a much safer and enjoyable towing experience. Before this ball mount, gauging your trailer's tongue weight was a hassle. You had to rely on inefficient bathroom scales, make a trip to the weigh station, or purchase a separate tongue weight scale. But with the Weigh Safe's built-in scale, measuring your tongue weight is as easy as coupling your trailer to your ball mount. Simply hook-up your trailer to the Weigh Safe ball mount just as you would any other ball mount. The weight of your trailer will push down on the hitch ball, which in turn pushes down on an internal hydraulic piston that sits on a bed of oil. When the piston drops into the oil, the pressure reading is sent out to the scale.

Easily Adjusts to Fit Your Setup

Weigh Safe ball mount has adjustable height

Adjusting and setting up the Weigh Safe ball mount to work with your specific trailer is easy. First, unlock and pull out the dual pins and remove the platform from the shank. Next, pull out the hitch ball retaining pin from the back of the platform and insert either the 2" or 2-5/16" hitch ball. A 1-7/8" hitch ball (WSB-L - sold separately) is also available. Then reinsert the retaining pin to secure the ball to the platform. Replace the platform and slide it along the shank to the desired height. Insert the dual pins and use one of the included keys to lock the pins in place.

Weigh Safe ball mounts installed in drop and rise positions

The Weigh Safe ball mount can be used in either the drop or rise position to best suit your application.

Superior Aluminum and Stainless Steel Construction

From the first moment that you lay eyes on the Weigh Safe ball mount you'll see that you're getting a superior, well-made product. The Weigh Safe's shank and ball mount platform are made entirely of 6061 T6 billet aluminum, which is the same material that is used to build aircraft components, automobile frames, and freight liners. This type of aluminum is known for having superior strength while maintaining its light weight, which makes it highly desirable over hollow steel components. 6061 T6 aluminum is also rustproof, which means the Weigh Safe hitch will maintain its clean, shiny, and impressive appearance for years to come. And the hitch balls are made of solid stainless steel, offering far greater protection against rust and corrosion than other steel hitch balls that are only painted or plated on the surface.

The Weigh Safe ball mount meets VESC V-5 regulations and is SAE J684 certified. These regulatory bodies - the Vehicle Equipment Safety Commission and the Society for Automotive Engineers - create standards for the design, construction, and performance of automotive and towing accessories. Weigh Safe has had this ball mount thoroughly tested in simulation to ensure that it complies with these standards. The result is a strong, safe, sturdy product that is built to last.

WS8-3 Weigh-Safe Trailer Hitches with Tongue Weight Gauge - 2" x 2-5/16" Ball Combo - 8 Inch Drop - 3 Inch Hitches

Customer Reviews

Weigh Safe 2-Ball Mount w/ Built-In Scale - 3" Hitch - 8" Drop, 8" Rise - 21K - WS8-3

Average Customer Rating:  4.8 out of 5 stars   (816 Customer Reviews)

Measure your tongue weight to determine if you can safely tow by simply coupling your trailer to this ball mount. Ball platform locks to shank. Tow up to 8,000 lbs with the 2" ball and up to 21,000 lbs with the 2-5/16" ball.

- WS8-3

First off I paid for the overnight shipping and it was true overnight shipping. Within 24 hours of ordering it was delivered. Since there are not many 3" hitches on the market yet, I was scepticle about the Qaulity of those that were. I had never bought or heard of weigh safe products before so I was not expecting much. Yet when I saw the qaulity of the hitch as I removed it from the box in the future I will not be hesitant to buy weigh safe products. From the easy key set up to move the height adjustment to the ease of changing the size of the ball with a pull of a pin and with it being made out of aluminum so no rusting or repainting what more could you ask for. Thank you again e-trailer for the fast shipping!!!!! A+A+A+ 346443

- WS8-3

Really nice, well built piece. I think it’s over priced but I really like the tongue weight scale and the overall look of the hitch. 900561

- WS8-3

Thanks easy to order easy to track the hitch was at my house in a few days and was exactly what I ordered 899515

- WS8-3

Love this hitch. It's lite and compact, but still hauls the weight I need. Still looks great after a year, will never rust. Easy to adjust. I can't think of any way to improve this thing. 861788

- WS8-3

Excellent product knowing your tongue weight is Priceless Does get sticky though I recommend greasing everything including the keyhole makes changing balls effortless Changing the height for different trailers and different weights will always keep your trailer level going down the road I have used all 3 balls with no issues And tongue weight as high as 1800 pounds 842121

- WS8-3

This is awesome. I have a 2019 F350 Platinum pickup and the grade and quality of this hitch is exactly what I was looking for. All parts are machined and fit perfectly. My truck was tall and I was concerned that the 8 inch drop may not be enough. It is perfect with the 20 inch rims. The order came on time and is great! It fits the 3 inch receiver like a glove. Highly recommend this to anyone considering buying. This was a little spendy but well worth the price. 774199

- WS8-3

I love the hitch, I've had other similar hitches but this one rules all. I'm so glad it's available in 3". 717357

- WS8-3

Won't actually tow with this until next week. But, folks, this is a big solid ball mount. It fits perfectly in the factory receiver on my 2019 F350 DRW. I got this one because the scale should take a lot of the guess work out of the tongue weight calculations. And, let's face it. This thing looks sharp on the back of the truck when you arent using it. 658971

A year later and still works like new. Probably more heft than I really needed. But the height adjustment and ball swap make towing different trailers a breeze.
Mark - 06/18/2020


- WS8-3

Awesome product, well made and easy to use. It is a great design with the tongue weight scale built into the hitch. Thanks! 609330

Still working great, love the easy process to switch out ball size. Excellent product.
RANDALL C - 03/02/2020


- WS8-3

Still looks great and doing the job. It make some noise when starting and stopping but no worse than other hitches. Great hitch. 584862

- WS8-3

Great product 581997

- WS8-3

High quality product! 580736

- WS8-3

Awesome ball mount. Easy to use. No more guessing about tongue weight now. I mistakenly ordered the wrong one, Shawn at Etrailer, was awesome and had my issue resolve within a few minutes. 522474

- WS8-3

Well made product. It’s nice to have a hitch that is lighter to handle. No complaints. 505261

- WS8-3

Just received the hitch yesterday and have not used it yet. Initial thought of it, IMPRESSIVE! There were a few small gouges/scratches on the unit, I think from the keys resting under it during shipping and the "Weigh Safe" sticker is super crooked. Obviously, neither will affect the function of it, but it looks a little sloppy after spending $350 for a trailer hitch. I look forward to using the hitch to see how it actually performs. Based on initial appearance, and not actual function, I give it 4 stars. 488039

- WS8-3

Overall I like the product. It does what I need it to do. Easy to swap between balls for different trailers. Only negative is the weight scale stopped working after about the third use. 475101

- WS8-3

Worked great assembled in seconds. and gives you an instant reading on your tongue weight to adjust your load accordingly. You will need to lube and clean after use in a salty road environment. 459622

- WS8-3

Excellent product and fast shipping ! I will continue to shop etrailer , as always great products , excellent service at good prices. 453040

- WS8-3

Used the hitch today and it is going to work great 447522

- WS8-3

Great looking product. Fast delivery. 365523

- WS8-3

very happy ,everything is ok. 342156

- WS10-25

Review from a similar Aluminum Tongue Weight Scale in Trailer Hitch Ball Mount

I purchased a Weigh-Safe for my stacker trailer, and found that it was an excellent tool for helping me learn the ideal way to load my trailer to reach the ideal tongue load. I eventually figured out that my 15,000# trailer needed a load distribution hitch, but I still find that the Weigh-Safe is valuable. I will use it when I have a different load, adjust for tongue weight, and then use the load distribution hitch. Quality is excellent, glad I bought it. 757574

- WS10-2

Review from a similar Aluminum Tongue Weight Scale in Trailer Hitch Ball Mount

Nancy was so helpful with all my needs definitely give this company -5- stars the product I ordered was great thanks again for all your help...... 374728

- WS4-2

Review from a similar Aluminum Tongue Weight Scale in Trailer Hitch Ball Mount

This is my second purchase of the Weigh Safe hitch. I had to buy a smaller one because I traded trucks and the 3" shaft was too large for the new truck's receiver. The first one I had was used around 3 years and I was 100% satisfied with it so it was an easy decision for this purchase. 679829

- WS4-2

Review from a similar Aluminum Tongue Weight Scale in Trailer Hitch Ball Mount

When I switched tow vehicles from a Silverado to a Durango SRT I had to be a lot more conscious of tongue weight. The adjustability in this hitch and the tongue weight scale let me set up each trailer to tow flawlessly behind the Durango SRT. 787243

Show More Reviews

Ask the Experts about this Weigh Safe Trailer Hitch Ball Mount

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Info for this part was:

Edited by:
Lindsey S
Installed by:
Jeff D
Expert Research:
Jameson C
Written by:
Chelsea B
Updated by:
Shelly K
Updated by:
Mike S

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