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Weigh Safe 2-Ball Mount w/ Built-In Scale - 2" Hitch - 4" Drop, 5" Rise - 10K

Weigh Safe 2-Ball Mount w/ Built-In Scale - 2" Hitch - 4" Drop, 5" Rise - 10K

Item # WS4-2

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Weigh Safe Ball Mounts - WS4-2
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Product Images

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Customer Photos


  • Adjustable Ball Mount
  • Fits 2 Inch Hitch
  • Class IV
  • 10000 lbs GTW
  • Drop - 4 Inch
  • Rise - 5 Inch
  • Weigh Safe
  • Two Balls
  • Built-In TW Scale
  • Aluminum Shank
  • 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 10,000 lbs with the 2-5/16" ball. Call 800-298-8924 to order Weigh Safe ball mounts part number WS4-2 or order online at etrailer.com. Free expert support on all Weigh Safe products. Guaranteed Lowest Price and Fastest Shipping for Weigh Safe 2-Ball Mount w/ Built-In Scale - 2" Hitch - 4" Drop, 5" Rise - 10K. Ball Mounts reviews from real customers.


  • All Info
  • Reviews (541)
  • Q & A (17)
  • Videos (2)
  • Photos
  • Why etrailer?

Weigh Safe Ball Mounts - WS4-2

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 10,000 lbs with the 2-5/16" ball.


Features:

  • 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


Specs:

  • Application: 2" x 2" trailer hitch receivers
  • Gross towing weight:
    • 2-5/16" Diameter hitch ball: 10,000 lbs
    • 2" Diameter hitch ball: 8,000 lbs
  • Tongue weight: 1,500 lbs
  • Distance from center of hitch pin hole to center of hitch ball:
    • Pin hole closest to ball: 8-1/2"
    • Pin hole farthest from ball: 9-3/4"
  • Maximum drop: 4"
  • Maximum rise: 5"
  • 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.



WS4-2 Weigh-Safe Trailer Hitches with Tongue Weight Gauge - 2" x 2-5/16" Ball Combo - 4 Inch Drop - 2 Inch Hitches






Video of Weigh Safe 2-Ball Mount w/ Built-In Scale - 2" Hitch - 4" Drop, 5" Rise - 10K


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Weigh Safe Ball Mounts - Adjustable Ball Mount - WS4-2 Review


Customer Reviews

Weigh Safe 2-Ball Mount w/ Built-In Scale - 2" Hitch - 4" Drop, 5" Rise - 10K - WS4-2

Average Customer Rating:  4.8 out of 5 stars   (541 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 10,000 lbs with the 2-5/16" ball.

- WS4-2
by:

Just received this today. Haven't used it yet. Quite disappointed that the receiver has several scratches straight out of the box given the price paid and the highly polished finish. Someone should have noticed the scratches before packing it for shipment. 503616



- WS4-2
by:

This hitch system is the most outstanding example of an object designed to perform a basic utilitarian function made into a work of art that I have ever seen. It deserves a place in the Smithsonian. Plus it works as designed. I am pleased to own this hitch. 529853



- WS4-2
by:

Best receiver and ball assembly on the market! The built-in scale told me immediately that my trailer's tongue weight was fine and not overloaded as I had previously thought. Masterfully built and exacting as if it were for the aircraft industry. Forget what it costs and buy it. You won't be disappointed. 237340



- WS4-2
by:

This is a very good product I have no complaints. My daughter ‘s RV Tongue weight is close to 1000 pounds and we thought it was about 600 at the most. It is also well terminated and looks cool on my truck. Attached a pictute 512483



- WS4-2
by:

Product was shipped very quickly and well packaged. Adjustable hitch appears to be great quality alumninum and stainless steel ball. All the pieces fit nicely together and the lock mechanism works well. I will try out the built in scale soon and compare its readings to an electronic scale. This hitch will allow me to adjust according to weight I'm carrying in my truck and allow me to adjust the position of the load in my camper so tongue weight is between 10-15% GTW. 470404



- WS4-2
by:

Love this hitch. Watching the video on the etrailer site is what sold me on the product and it’s exactly the way it was presented. We have 2 trucks of different heights and 3 trailers that use 2” and 2 5/16” balls. Changing out the different hitch balls takes about 30 seconds... No vise needed, no huge wrenches to torque the nut down. I also purchased the available locking receiver pin, keyed the same as the adjustable hitch pin lock.. I also am very happy to know exactly what my trailer tongue weight is. Easy to use, lightweight, multipurpose, and looks pretty cool, too. 556850



- WS4-2
by:

I researched the internet for a versatile (yet reasonably-priced) hitch for my Sierra HD. All searches led back to this Weigh Safe hitch on etrailer.com. The hitch is premium quality with excellent machined surfaces, and the built in scale really helps to balance the load for the safest possible tow. I love the fact that I can invert the ball and attach it on the back side of the hitch to eliminate those "shin-busters" when not in use. I also splurged on the locking hitch pin set to ensure that no one else can borrow my hitch, and I love that both locks are keyed the same to eliminate one extra key on my keychain. I highly recommend the set to anyone who wants a top quality hitch, and I fully recommend that they purchase from etrailer.com! 557341



- WS4-2
by:

Normally, I use a weight distribution hitch when towing a horse trailer with my horse in it. However, I purchased this product to make it easier to move the empty trailer around AND to periodically check the tongue weight of the trailer, as I add or move weight inside the trailer, which is my favorite feature. The Weigh Safe hitch has certainly proven to be sturdy and very easy to use. 561122



- WS4-2
by:

This product is truely a work of art. I like the ability to easily change the ball height. It’s also very convenient to be able to see the tongue weight as you load the trailer. 563772



- WS4-2
by:

Over the years I have had many hitches. If this hitch was around when I bought the first one, I would have bought this hitch and been done. I probably would have saved money over the years trying to find the perfect hitch. This is a beautifully machined part, right down to the chamfer on each pin hole and size/weight engraved into the top of the hitch balls. Very high quality. Almost a piece of art. 478165



- WS4-2
by:

Great product! The weigh safe has many great features: versatility, the fantastic tongue weight scale, two popular ball sizes, the machining is excellent, and manufactured for safety, and security. etrailer ordering, and great web site is worthy of a five star rating! Oh, did I mention the fast shipping! I definitely will ordering again soon. 236816


Comments

Excellent product! Really like knowing tongue weight, and the versatility of the hitch. The quality, and workmanship is first class.

John R - 02/01/2017

22359

- WS4-2
by:

For years I have been worried I am overloading my trailer hitch. I am kind of squeaky, so I just ignored the issue. Finally I got a new 1/2 ton and knew I had to do something so, Tongue weight Scale. The thing works great. I was able to move tractor around to find the best and safest place to lock my Kubota down. I highly recommend this product, works great and provides peace of mind. 353542



- WS4-2
by:

This product does not disappoint. I just received it today. Fit and finish are superior even to my strict standards. One thing that is different about the unit compared to the published pictures is that the tang that inserts into the receiver is squared off as opposed to angular as shown in the pictures. I prefer this squared look/style much more. I am very anxious/excited to use this hitch. Only time will tell how the scale function will last. Based on the quality machining and fitment, I am betting it will last a long time. AMERICAN MADE!!!! 216779



- WS4-2
by:

This works great. This is when I first got it. I am only polling my trailer with one pallet of concrete. The total weight of the trailer plus load was 4,600 lbs. It was easy to see and set my tung weight. I would recommend this to anyone who wants to know there tung weight, but you don't want the hassle of using scales. 400547



- WS4-2
by:

Works as advertised. Had an issue with the product. It was covered. Weighsafe made a quick painless warranty replacement, resulting in no downtime for me. 620385



- WS4-2
by:

This has got to be one of the best hitches made. I Is definitely heavy duty, looks to be built xtremely well. Is easy to use. Ease for changing out the balls, the scale is easy to read. Thanks for producing such a great product 617528



- WS4-2
by:

Until you see this hitch in person, it's hard to appreciate the high quality look and feel. It looks like it was made for an airplane, forged aluminum, well engineered. I used mine just a few days ago to tow my new tilt trailer home. The scale only showed about 100# or so but the trailer was empty. It was easy to adjust for the correct height and that feature will be handy when we get a different horse trailer. I also bought the locking hitch pin. Wish I had know to get them keyed alike but not a big deal. Tim was a big help in selecting this hitch and locking pin. 617164



- WS4-2
by:

Does a great job helping leveling my trailer out by understanding the weight on the truck. Only issue is this unit has more slack than a traditional hitch set up. There is more movement in the connection to the truck so taking off from stops and movement on the road is noticeable. 595596



- WS4-2
by:

I am very pleased! I can believe it weights darn near nothing... and it's so well done, it could pass as a work of art. 591588



- WS4-2
by:

This is a awesome product, beautifully manufactured, very adjustable with either a drop or rise in height, and simple to set up. The tongue weight scale is definitely a added bonus, taking the guesswork out of loading. The unit is a little pricey but worth the peace of mind in security and accuracy. I do wish, however, that it included the hitch pin as part of the unit, especially in view of the price. All in all, though, it is a superb unit. For me, it will see about 6-10,000 road miles a year. 588949



- WS4-2
by:

this product is very nice the best I seen so far. very well made. I would recommend it. 560415



- WS4-2
by:

I recently had to shop for a new trailer ball and mount and found etrailer to be extremely informative and helpful in finding the best options and variety of items that worked for my situation. They shipped the product quickly and it arrived with helpful instructions. It is extremely high quality and I look forward to using it to pull our new Airstream 27 foot trailer with it. The investment in our trailer was substantial and I wanted to find a high quality ball and mount to protect our investment. etrailer had a number of high quality options and we will use them again in the future. 546294



- WS4-2
by:

Great product and fast shipping. I will definitely buy from etrailer again. 529231



- WS4-2
by:

Amazing hitch! Easy directions, looks good and most importantly makes you feel secure about what you are trailing. The multiple heights make it convienent from small SUV to larger pick ups. 524525



- WS4-2
by:

I've had this hitch a year and it's still working great. It's easy to adjust the ball height and having the scale gives me peace of mind knowing that I haven't exceeded the tongue weight of my trailer. 504916



- WS4-2
by:

Love the hitch only thing as only got one key and should of got two called them and they are sending one out asap good customer service will buy more stuff from them in the future 497719



- WS4-2
by:

very happy with my purchase, delivery was faster than i expected, and the heavy duty ball mount is well constructed, I pull a trailer behind my 5th wheel, now i don't have to guess the tongue weight anymore 486148



- WS4-2
by:

the hitch works great 463288



- WS4-2
by:

Heavy duty and nicely made. Essential for safe trailering. 451510



- WS4-2
by:

It works flawlessly with class v receiver, trailer do not have any slop once mounted/connected to tow vehicle unlike other manufacturers hitch assemblies, no issues all the way up to Max towing capacity with tandem axle box trailer. 449019


Comments

Thank you for inquiring about the Weigh Safe Mount. I purchased it for my son who had a Dodge Ram 1/2 ton pick-up and was doing a lot of towing. The truck has since performed at the old Dodge level and he sold the truck back to Dodge. He has not used the trailer mount in the last two months. However, when he did utilize the mount, he was extremely pleased with the knowledge of the tongue weight information. He stated that it allowed him to make fewer haulage trips and the trips were made much safer with the knowledge readily at hand.

Issac - 11/05/2018

45395

- WS4-2
by:

I love this thing! Best hitch I have ever owned. The adjust ability is great, I love being able to adjust the angle of my trailer so I can get the tongue weight just right. It still works great after towing MANY trailers with it over the past year. The quality is impeccable. I even converted some of my friends to them. Yes it is expensive, but you get what you pay for. A high quality, long lasting, made in the USA product. I Highly recommend this hitch. I have had not one single problem with it and it has been put through the wringer! 448573



- WS4-2
by:

Now my single Axle dump trailer will be balanced and the handling will be correct. 446856



- WS4-2
by:

Heavy Duty and Nice quality 437022



- WS4-2
by:

The calibration of the "tongue weight scale" reflects a few hundred pounds...when nothing is attached to the hitch. I can live with this (or account for this). Otherwise, it is a beautiful unit with all the flexibility I wanted. I would still order it. 418591



- WS4-2
by:

I have purchased 3 of these ws4-2 and I have had nothing but good come from it. I live on a island and tow my boat in and out the water. It is nice that it is aluminum so it will always look great, love the scale and the way it locks. This is a really great hitch. 377638



- WS4-2
by:

Seems quite well made, great machining, everything fits perfectly. Tongue weight, or lack of it, is a huge safety issue. This helps a lot. 358231



- WS4-2
by:

Great little hitch..... not a single problem with it after a year in pretty hard use. 350837


Comments

best investment ever.....

torsten - 03/10/2018

35692

- WS4-2
by:

I have not used product yet, but the quality looks great. The ability to see the hitch weight is the key to safe towing. 347555


Comments

It works great, good to know instead of guessing weight of hitch. Highly Recommend.

Rick P - 03/02/2018

35322

- WS4-2
by:

Awesome product. Such a smart idea and I really look forward to using it every time I tow. 346425



- WS4-2
by:

Product is great. Solid and light weight. Very simple to pull out and quick to assemble each time I tow. 335349



- WS4-2
by:

WOW! Very well thought out and made. I have not towed with it yet. I tow a variety of sailboats and RIBs, I have many times thought in the back of my head how far off the tongue weight might be. Never again! I think I will keep this inside the truck while not in use to help preserve its looks. I also have to say that the etrailer videos were very good and gave me confidence in parting with my money. 332313



- WS4-2
by:

The receiver hitch I have required that I didn't overload with tongue weight. With this app I can adjust load to perfect numbers and drive/tow safely 330164



- WS4-2
by:

The Weigh Safe 2-Ball Mount w/Built-In Scale - 2" Hitch is as advertised. It is definitely of high quality material and excellent workmanship. Very easy to adjust ball height in a matter of seconds. 327655


Comments

It has exceeded my expectations. Very please with its performance. Would highly recommend to friends.

Rick P - 12/24/2017

32238

- WS4-2
by:

Overall impressive out of the box. Very quality feel. Used to pull my Rpod camper and helped me realize I have been 50 to 100 lbs over on my hitch weight rating. A little reconfiguring got me under. Only thing is I'm a lightweight tower and scale starts at 100 lbs and each mark is 100 lbs and 2nd numbered is 500 lbs. Wished I could have specified a more detailed scale. Other than that I love it. A lot lighter than what I was using also. 306139



- WS4-2
by:

Kinda loose , rattles a lot , but since I take either 2 motorcycles , camper trailer or my Antique car on my 20ft Car Hauler, it perfect to know were to park every thing. I just have my Wife watch scale , and when its 400lb tongue weight , I strap everything down, no more running to Weigh station , makes it safe to travel with out any worry about swinging load flipping your car ! 245540


Comments

Great after you replaced it ! Scale was Upside down , they sent New one ! Very happy

John F - 04/15/2017

23172

- WS4-2
by:

What makes this hitch so great is that I can adjust tongue weight by moving my load on the car hauler. You can see exactly how much the weight changes by moving a car forward or rearward! I'm very impressed. 242233



- WS4-2
by:

The best hitch I've ever owned. It was worth every $ spent on it. Saved a lot of time the first time I used it! I use it on my motor home and pic up truck to tow my enclosed cargo trailer. 233842



- WS4-2
by:

Really great product, highly recommended, etrailer did amazing job on shipping , very fast. I order alot of things online and I must say they have the best shipping , the how to videos were very helpful with installing the back up camera, so no need in taking it to a mechanic , I had it installed in no time at all , the weigh safe hitch works perfectly , and glad I know that I'm pulling a trailer a lot safer now , I will definatly be buying from them again for all my trailer needs. Thanks Etrailer 233492



- WS4-2
by:

Have not used it yet, however, the concept is great. very nice construction and finish. 215039



- WS4-2
by:

Great product well engineered. 213562


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Ask the Experts about this Weigh Safe Ball Mounts
Do you have a question about this Ball Mount?


  • Can you change trailer wheel size from 13 inch to 15 inch on the same axle?
  • Yes, you can change trailer wheel size from 13 inch to 15 inch on the same axle if that axle isn't a 2000 lbs axle. Most 2000 lb axles are not rated to use a 15 inch tire. Almost all 3500 lb and up axles can handle 15 inch tires which is most likely what you have, but there are still a few things to consider and check before making this change. A higher trailer can have its benefits of slightly more ground clearance and 15 inch tires gives you the benefit of radial tire options, but...
    view full answer...

  • Recommended Weigh Safe Ball Mount With Scale For 7000 GVWR Trailer And 2 Inch Trailer Hitch
  • I recommend the Weigh Safe 2-Ball Mount w/ Built-In Scale - 2" Hitch - 6" Drop, 7" Rise - 10K, # WS6-2. This ball mount has a 10,000 lb capacity and 2 hitch balls that come with the unit. It has a 2 inch ball and a 2-5/16 inch ball so you have the versatility to haul different trailer coupler sizes. If you want a smaller hitch with the nearly all of the same functions, I recommend the Weigh Safe 2-Ball Mount w/ Built-In Scale - 2" Hitch - 4" Drop, 5" Rise - 10K, # WS4-2. This does...
    view full answer...

  • Are the Gauges of the Weigh Safe Ball Mounts like the part # WS4-2 Waterproof
  • The tongue weight gauge of the Weight Safe Ball Mounts like the part # WS4-2 are waterproof. You would not need to worry about it getting damaged by water. It would be covered by the warranty if something were to happen to them.
    view full answer...

  • Anti-Rattle Hitch Stabilizers to Reduce Play of Ball Mount in Hitch Receiver
  • The Weigh Safe 2-Ball Mount # WS4-2 has a standard 2-inch shank, in this case made of milled billet aluminum for strength. It is not sized differently due to its material. I went to our warehouse and measured the shank with a precision digital caliper and found it to be 1.943-inches. If you care to add an anti-rattle mechanism to reduce any play between the shank and receiver tube, you can use Boone # 93347 or the Roadmaster Quiet Hitch # RM-061.
    view full answer...

  • Will the Scale in a Weigh-Safe Ball Mount Last as Long as the Rest of the Ball Mount
  • You should not have a problem with the longevity of the Weigh-Safe ball mount # WS4-2. It is a simple design with few moving parts which limits the chance of something breaking in the scale mechanism. The ball mount is designed for up to 1,500 pounds tongue weight so its ready for heavy duty applications up to 10,000 pounds gross trailer weight and the standard pushing and pulling associated with tow a trailer would not have a negative affect on the mechanism. So far the Weigh-Safe ball...
    view full answer...

  • Will the Stainles Steel Hitch Balls for Weigh Safe Ball Mount Need to Be Greased
  • The hitch balls included in the Weigh Safe 2-Ball Mount with Built-in Scale # WS4-2 will need to be greased. These are stainless steel hitch balls and so they are corrosion resistant. I recommend a hitch ball grease like White Grease Hitch Ball Lub # 58117 for use with the Weigh Safe ball mount hitch balls. This grease helps reduce friction between the hitch ball and coupler while towing. The # 58117 grease is water resistant and non-toxic.
    view full answer...

  • Recommendation for Measuring Tongue Weight of Borrowed Trailers
  • I would think the trailers you are planning on towing will already have trailer jacks on them, but if they do not, the Pro Series Round, Snap-Ring Swivel Jack # PS1400300303 that you referenced is a great option. This jack will bolt around trailer frames up to 3 inches x 4 inches. The # PS1400300303 jack will be able to be installed and uninstalled as you need it. This jack has a footplate that will work well to place the jack on the Sherline Trailer Tongue Weight Scale # 5780. Using...
    view full answer...

  • Is locking Dual Pin Assembly for Weigh Safe And 180 Hitch Available For Other Ball Mounts
  • The Locking Dual Pin Assembly, part # WS03 is designed to work with the 180 Hitch and Weigh Safe 2-ball mounts only and will not work with other manufacturers mounts. The 180 Hitch 2-Ball Mounts like part # LTB4-25 does come with the locking dual hitch pin like part # WS03. However, it is also sold as a separate item, and is not available as a keyed-alike item. The locking dual hitch pin is included with the Weigh Safe 2-Ball Mount with the built-in scale like part # WS4-2. I...
    view full answer...

  • Pin Hole to Hitch Ball Dimensions for Weigh Safe Ball Mount part # WS4-2
  • The Weigh Safe Ball Mount part # WS4-2 that you referenced has two pin holes in it's shank. The closer one is 8-1/2 inches to the center of the ball hole and then the further away one measures 9-3/4 inches away. You can raise the ball platform so that it gives you a zero rise/drop as well.
    view full answer...

  • How to Measure Loaded Trailer Tongue Weight
  • There is no way to use the Weigh Safe 2-Ball Mount with Scale # WS4-2 along with a weight distribution (WD) system but you can use WD and measure your trailer tongue weight (TW) easily enough using the stand-alone Sherline Scale # 5780. The Sherline scale is compact and easy to use and it reads up to 2000-lbs of loaded trailer TW.
    view full answer...

  • Is a 1-7/8" Hitch Ball Available to Use with the Weigh Safe 2-Ball Mount # WS4-2
  • The Weigh Safe 2-Ball Mount # WS4-2 that you referenced comes with a 2-5/16" and a 2" hitch ball but you can purchase the 1-7/8" hitch ball separately with part # WSB-L so that you can use the ball mount for multiple towing applications. The ball mount comes with a lock for the platform but I do also recommend using the Weigh Safe Hitch Receiver Lock # WS05 to further secure the ball mount to your hitch receiver. This may not come keyed alike to the platform lock so if you would like...
    view full answer...

  • Can Weigh Safe 2-Ball Mount # WS4-2 be used To Determine Tongue Weight for WD System
  • Yes, if you wanted to use the Weigh Safe 2-Ball Mount # WS4-2 as a way to determine tongue weight and then hook up your weight distribution you certainly could do this. Since tongue weight is the most important factor when picking out a weight distribution system this is a great way to get a solid figure.
    view full answer...

  • Distance From Pin Hole to Curve of Shank on the Weigh Safe Ball Mount part # WS4-2
  • The Weigh Safe Ball Mount part # WS4-2 that you referenced would be the adjustable ball mount you would need. It has 6 inches from the further back pin hole to the curve of the shank just like the picture you referenced.
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  • Shank Dimensions of the Weigh Safe 2-Ball Mount w/ Built-In Scale
  • It sounds like you are going to be using the Weigh Safe 2-Ball Mount w/ Built-In Scale part # WS4-2 with a set of hitch mounted mud flaps so you need the distance from the center of each hitch pin hole to the rounded portion of the shank. If that is the case then the first hitch pin hole is going to be 4-1/4" from the rounded portion of the shank and the last hitch pin hole is going to be 3-1/8" from the rounded portion of the shank. I have attached a photo of this for you as well. Please...
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  • Will Sub-Freezing Temperatures Affect Accuracy of Weigh Safe Ball Mount Scale
  • I spoke with my contact at Weigh Safe who said that their ball mounts like the part # WS4-2 you referenced are compatible with temperatures as low as -40 degrees Fahrenheit. I do recommend using the Locking Dual Pin Assembly and Hitch Pin Set # WS06 so that you can use the same key for the hitch pin and the ball mount. The locking hitch pin comes with a cover but you can use part # WS08 to help protect the lock core for the ball mount.
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  • Weigh Safe Ball Mount Scale is Between 0 and 100 with No Weight on the Ball Mount
  • In the pictures and videos we took of Weigh Safe ball mount # WS4-2 the scale was slightly above zero as well. The area below the 100 tick mark is the zero zone. The scales are calibrated to be accurate up to 1,500 pounds. According to our technical contact at Weigh Safe the scales are calibrated to 1,500 pounds but remain fully linear all the way to their maximum of 3,000 pounds (at the top of the red scale). They choose not to calibrate those points above 1,500 pounds so as to encourage...
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  • Replacement Locking Dual Pin Assembly for a Weigh Safe Ball Mount
  • Yes, the Locking Dual Pin Assembly and Hitch Pin Set # WS06 will fit your Weigh Safe ball mount # WS4-2. If you just want the dual locking pin assembly it is # WS03. I also recommend the dust cover, # WS08, to help protect the lock.
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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Michael H
Installed by:
Jeff D
Expert Research:
Jameson C
Video Edited:
Jacob T
Expert Research:
Adam R
Video by:
Kathleen M
Video Edited:
Dustin K
Installed by:
Cole B
Photos by:
Sam P
Written by:
Chelsea B
Installed by:
Randy B
Photos by:
Zach O
Updated by:
Shelly K
Updated by:
Alexander C
Photos by:
Stacy F

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