1. Trailer Hitch Ball
  2. Weigh Safe
  3. Trailer Hitch Ball
  4. 2 Inch Diameter Ball
  5. Tongue Weight Scale Ball
  6. 10000 lbs GTW
  7. Class IV
  8. Class V
Weigh Safe 2" Hitch Ball w/ Built-In Scale - Stainless Steel - 10,000 lbs GTW

Weigh Safe 2" Hitch Ball w/ Built-In Scale - Stainless Steel - 10,000 lbs GTW

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Trailer Hitch Ball
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WSUN-2 - 10000 lbs GTW,Class IV,Class V Weigh Safe Trailer Hitch Ball
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This 2" hitch ball has a built-in scale that lets you measure tongue weight when your trailer is hooked up to determine if you can safely tow. Stainless steel construction resists rust and corrosion. Lowest Prices for the best trailer hitch ball from Weigh Safe. Weigh Safe 2" Hitch Ball w/ Built-In Scale - Stainless Steel - 10,000 lbs GTW part number WSUN-2 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
  • All Info
  • Reviews (13)
  • Q & A (12)
  • Photos
  • Why etrailer?

Weigh Safe Trailer Hitch Ball

  • Trailer Hitch Ball
  • 2 Inch Diameter Ball
  • Tongue Weight Scale Ball
  • Weigh Safe
  • 10000 lbs GTW
  • Class IV
  • Class V
  • Stainless Steel

This 2" hitch ball has a built-in scale that lets you measure tongue weight when your trailer is hooked up to determine if you can safely tow. Stainless steel construction resists rust and corrosion.


  • Hitch ball provides connection point for your trailer's coupler
  • Tongue weight scale built into the hitch ball 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
  • Stainless steel construction is corrosion resistant
    • Shank is heat treated for superior strength and dependability
  • SAE J684 certified and VESC Regulations V-5 compliant
  • Made in the USA


  • Ball diameter: 2"
  • Weight capacity: 10,000 lbs
  • Tongue weight capacity: 1,500 lbs
  • Shank diameter: 1"
  • Fits ball mount platforms that are 3/4" thick
  • Overall height: 5-7/8"
  • Scale dimensions: 3" long x 2" wide x 2-1/4" tall
    • Scale sits below the ball mount platform when installed
  • Warranty:
    • Limited lifetime for hitch ball
    • 1-Year limited for scale gauge

Weigh Safe hitch ball application

This Weigh Safe hitch ball 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 peace of mind, knowing that your setup is safe.

A clamp-on adapter (WSUN-4 - sold separately) can be purchased separately to increase the diameter of this hitch ball to 2-5/16". The adapter allows you to easily switch hitch ball diameters so that you can tow trailers with different coupler sizes. If you know that you will be needing this function, we recommend that you purchase WSUN-1, which is this same hitch ball with the adapter already included.

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

Weigh Safe built-in tongue weight scale

The Weigh Safe hitch ball'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 hitch ball, 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 ball's built-in scale, measuring your tongue weight is as easy as coupling your trailer to your ball mount. Simply attach the hitch ball to your ball mount and hook up your trailer. 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.

Simple Installation

Installation of Weigh Safe hitch ball

Installing the Weigh Safe hitch ball is simple. Insert the shank of the hitch ball through the hole in your ball mount and thread on the included lock washer. Next attach the female fastening nut, which includes the scale, to the hitch ball shank. Then tighten down the female fastening nut.

Superior Stainless Steel Construction

This Weigh Safe hitch ball is constructed of solid stainless steel offering far greater protection against rust and corrosion than standard steel hitch balls that are only painted or plated on the surface. The stainless steel shank is heat treated to increase its overall toughness, shear strength, and tensile strength so that you can safely tow up to 10,000 lbs.

The Weigh Safe hitch ball 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 hitch ball 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.

WSUN-2 Weigh Safe 2" Universal Hitch Ball with Tongue Weight Scale

Item # WSUN-2

Customer Reviews

Weigh Safe 2" Hitch Ball w/ Built-In Scale - Stainless Steel - 10,000 lbs GTW - WSUN-2

Average Customer Rating:  4.5 out of 5 stars   (13 Customer Reviews)

This 2" hitch ball has a built-in scale that lets you measure tongue weight when your trailer is hooked up to determine if you can safely tow. Stainless steel construction resists rust and corrosion.

- WSUN-2

Amazing. Very nice!!! You will need a torque wrench to attach it to the hi te hitch. 773016

- WSUN-2

All parts purchased from e-trailer are well made, easy to install, staff very helpful, highly recommended. Rebuild my car trailer and the ball hitch with the scale on it is amazing. Thanks 749600

- WSUN-2

I have only used the WSUN-2 once since I bought it. I needed to measure the tongue weight of a trailer I planned to tow with a hitch extension. It turned out to be at the maximum of the extension's rating so I didn't tow it. If I had not measured the tongue weight, I might have gotten into some safety issues with the trailer. The WSUN-2 works as advertised, is well made and appears to have fairly good accuracy. 703838

- WSUN-2

Product is as expected and seems to be accurate although I need to watch some you tube videos to verify calibration 663786

- WSUN-2

Worked as expected Easy to install and calibrate 634149

- WSUN-2

Easy to work with company 614230

- WSUN-2

It's great being able to know what the tongue weight is. Make loading the trailer easier and a whole lot safer.With this ball there's no need for a scale to weigh your tongue. Great deal 585433

- WSUN-2

Excellent customer service. Exactly as advertised. 564813

- WSUN-2

Just what I needed !!!!! 510575

- WSUN-2

Excellent product, saves a lot of guess work. Fit and finish is first class! 495218

- WSUN-2

The hitch is of great quality. I got it from etrailer quickly. It took several times of properly adjusting the scale during set up before I felt I was getting a correct reading. I am only towing 3000# so maybe it isn’t as sensitive with lighter tongue weights. 493455

I don’t use it anymore. It was on my truck for a month, and I used it several times to weigh over that month. When I took it off the truck I noticed hydraulic fluid leaking where the ball meets the body of the hitch. I don’t know if it is still accurate. I was too lazy to see if it could be replaced under warranty, and I borrowed a friends for my weighing needs in the short term. I did enjoy it while I was using it.
James - 04/08/2019


- WSUN-2

Easy to install, works well. No issues or complaints. 491065

- WSUN-2

So far, OK, but I haven't towed with this yet. The machined quality of the parts is 5 star. But... The bottom gauge replaces the nut. In many ball mounts, mine included, you cannot rotate this ball to tighten because there are raised I-beam like ridges on the top of the ball mount, and the flats of on the base of the ball fall between the raised portions on the ball mount. Instead, you have to turn the bottom gauge to tighten the ball to the requisite tightness. The problem is that this can (and probably will) leave the gauge facing in a direction where it will be unreadable. Then you are stuck with a choice of leaving the gauge looser or facing the wrong way. Weigh Safe should have provide a few washer shims of different thickness so that you don't have to trade off viewability of the gauge with the needed tightness on the ball. 403162


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Info for this part was:

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

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