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  1. Trailer Hitch Ball Mount
  2. Weigh Safe
  3. Adjustable Ball Mount
  4. Fits 2-1/2 Inch Hitch
  5. Drop - 4 Inch
  6. Rise - 5 Inch
Weigh Safe Hitch w/ Built-In Scale for 2.5" Hitch, 4" Drop/5" Rise, 18.5K, Aluminum
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Weigh Safe

Weigh Safe Hitch w/ Built-In Scale for 2.5" Hitch, 4" Drop/5" Rise, 18.5K, Aluminum

Part Number: WS76ZR
$379.00
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 2.5" Hitch, 4" Drop/5" Rise, 18.5K, Aluminum part number WS76ZR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (131)
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Weigh Safe Trailer Hitch Ball Mount - WS76ZR

Highlights

  • 18,500 lbs GTW for Heavy Loads: Handles large campers, boats, and equipment trailers with strength.
  • Built-In Tongue Weight Scale for Safer Towing: Lets you instantly check balance before hitting the road.
  • 4" Drop or 5" Rise for Level Trailers: Adjusts height to match different trailer setups with one hitch.
  • Dual Hitch Balls in One Mount: 2" (10,000 lbs) and 2-5/16" (18,500 lbs) balls cover multiple trailer couplers.
  • Locking Pins for Theft Deterrence: Keyed-alike set secures both the shank and adjustable platform.
  • Lightweight 6061 T6 Aluminum Build: Solid block design resists corrosion while staying easy to handle.

Features to know about

Takes the Guesswork Out of Tongue Weight: Built-In Scale with Glycerin Fluid

Balancing a trailer used to mean lugging out separate scales or guessing by eyeball. This Weigh Safe hitch makes it automatic. The built-in gauge is filled with glycerin that stays liquid down to 17 degrees, giving you a clear, accurate reading every time you couple up. It measures tongue weight right through the hitch ball so you can adjust your load before hitting the road—no extra tools or trips to the weigh station.

Adapts to Different Trailers: Adjustable 4" Drop and 5" Rise

Whether you’re hauling a boat one weekend and a camper the next, matching trailer height is easy here. The adjustable ball mount slides up or down the 2-1/2" shank in 1" increments and locks in place with the dual pins. With up to a 4" drop or a 5" rise, you can keep every trailer level and stable behind your tow vehicle.

Ready for Heavy Loads: 18,500-lb and 10,000-lb Ratings

This setup isn’t just for light hauls. The 2-5/16" stainless steel ball is rated for 18,500 lbs gross towing weight, while the 2" ball handles 10,000 lbs. The solid block of 6061 T6 billet aluminum keeps strength high and weight low, giving you confidence when pulling everything from equipment trailers to campers.

Built to Last on the Road: Corrosion-Resistant Aluminum and Stainless Steel

Weather can be rough on towing gear, but this one’s made to hold up. The aluminum shank and platform resist rust and pitting, while the stainless steel hitch balls stay clean even after exposure to road salt and grime. Every piece locks together with keyed-alike pins for security that stays solid trip after trip.

Simplifies Switching Between Trailer Sizes: Two Ball Options Included

Swapping between trailers with different coupler sizes doesn’t have to slow you down. This mount includes both a 2" and a 2-5/16" ball that change out fast—just pull the retaining pin, drop in the new one, and reinsert the pin. It’s straightforward, secure, and lets you handle multiple trailers without juggling separate mounts.

Specs

Application

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

Weight and Capacity

  • Gross towing weight (2-5/16" Ball): 18,500 lbs
  • Gross towing weight (2" Ball): 10,000 lbs
  • Maximum tongue weight: 2,200 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: 4"
  • Maximum rise: 5"
  • Incremental height adjustment: 1"

Warranty

  • Limited lifetime warranty

WS4-2.5-KA Weigh Safe 4" Drop Hitch w/ 2.5" Shank (10K/18.5K GTWR) w/ Locking Hitch Pin





Video of Weigh Safe Hitch w/ Built-In Scale for 2.5" Hitch, 4" Drop/5" Rise, 18.5K, 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 - WS76ZR

Hello neighbors, Steve here with etrailer.com. Thanks for joining me today while we take a look at our Weigh Safe two-ball ball mount with built-in scale for a two-and-a-half by two-and-a-half inch shank with a four inch drop or five inch rise. Now folks, you're gonna get two balls. One is a two-and-five-sixteenth ball, that's stainless steel rated at 18,500 pounds, and a two inch ball rated at 10,000 pounds stainless steel as well. The whole assembly here on the shank is built in aluminum 6061 T-6 to be exact. And the mounting platform as well was all one solid piece before they made 'em two different ones and milled it all out.

But that just means everything is rust proof, corrosion proof, and you won't have to worry about everything looking gunky and nasty. Now with the built-in scale, it's gonna allow you to see if you're at a safe balanced tongue weight, it's gonna promote safe towing. It'll help you load and adjust that load as needed before you run off and start towing and everything. You could adjust stuff if you needed to, and it's efficient, hassle free, and eliminates the need for separate or commercial scales by giving you the tongue weight here that you need. Now the adjustable height here gives you one inch increments of adjustment.

Again, you can use it in the drop or the rise as needed. Obviously you'd have to flip that over for the rise, but you get the concept. Now some quick measurements. Center ball to center of hitch pin here, eight-and-a-half inches. Center ball, center of hitch pin here, nine-and-five-eighth inches.

Now you do get four keys, everything here is keyed alike. You got two rubber covers. They're both gonna keep dust, grime, dirt out of these locks. So I'll just take a random set here, unlock the hitch pin. I can take that out.

What I like about the hitch pin lock is I can put it in and just push it in and now it's locked again. You don't have to have the key in there to lock it. So I'll take that same key and I'll undo the double pin down here. Pull that out. Let's say we want to swap the two inch ball to a two-and-five-eighths or two-and-five-sixteenths. My bad. So on the back here, you got a pin with the key ring. I simply dip it over like that. It pretty much falls out on its own. Pull the two inch ball out, replace it with the two-and-five-sixteenths. Line up on the holes and everything back here. Pop it back in, everything's flush. Now I can put this back onto the ball mount. Put my locking mechanism back in. Now I'm locked in. Dust cover back on for protection of the lock itself. And now I'm ready to tow that two-and-five-sixteenth inch coupler or trailer setup. So that quick folks, it's that easy. Not much to it. Again, you get the key to like locks. Everything here is gonna be rust and corrosion resistant. Everything here is built to last. This is the Weigh Safe two-ball ball mount with built-in scale for the two-and-a-half by two-and-a-half inch shanks. I'm Steven, thanks for watching. As always, stay safe while you're towing.

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:
Best hitch I ever bought and looks solid and heavy duty
by:
The hitch is great but the customer service has been just as good. Highly recommend.
by:
Outstanding product
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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:
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:
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.
by:
Looks great, works even better, delivery was quicker than I would have believed. Great job Etrailer!
by:
Quick install, nice! It’s built like a tank, I was concerned about weight, not anymore, it’s so light, even the UPS guy was carrying the hitch with one arm tucked by his side! 3” shank, yes, not much slop. Looking forward to using it for the 1st time tomorrow. Looks sweet on the truck too!
by:
Not made in America anymore, but assuming the scales are correct its an invaluable tool to make sure you are within payload when towing.
by:
Haven't open the box yet. Shipping was fast.
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Steven C
Installed by:
Steven C
Employee Wilson B
Updated by:
Wilson B
Employee Katherine B
Updated by:
Katherine B
Employee Evangeline M
Test Fit:
Evangeline M
Employee Kim H
Written by:
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Employee Evan R
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