1. Weight Distribution Hitch
  2. Equal-i-zer
  3. 200 lbs
  4. 300 lbs
  5. WD With Sway Control
  6. Fits 2 Inch Hitch
Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 4,000 lbs GTW, 400 lbs TW

Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 4,000 lbs GTW, 400 lbs TW

Item # EQ37040ET
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Weight Distribution Hitch
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Product Expert Lindsey S

Is this right for you? Product Expert Lindsey S says:

Yes, if you:

  • Need to keep your trailer firmly in line so it tracks perfectly behind your vehicle
  • Want an American-made system that lasts from an industry-leading brand
  • Have a lightweight trailer that maxes out at 400 lbs of tongue weight

No, if you:

  • Hate noise - the steel on steel brackets can create a racket, especially during turns
  • Might be upgrading to a heavier trailer and would want to transfer your hitch to it
  • Don't have a big problem with trailer sway - you might just end up with a really rigid ride
Steel-on-steel friction works to prevent and correct trailer sway in this unique weight distribution system. Sway control brackets ensure that your trailer stays in line with your tow vehicle. 2" Hitch ball and adjustable shank included. Lowest Prices for the best weight distribution hitch from Equal-i-zer. Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 4,000 lbs GTW, 400 lbs TW part number EQ37040ET can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (586)
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  • Why etrailer?

Equal-i-zer Weight Distribution Hitch - EQ37040ET

  • 200 lbs
  • 300 lbs
  • WD With Sway Control
  • Fits 2 Inch Hitch
  • Allows Backing Up
  • Includes Shank
  • Equal-i-zer
  • Prevents Sway
  • Electric Brake Compatible
  • Surge Brake Compatible
  • 4-Point

Steel-on-steel friction works to prevent and correct trailer sway in this unique weight distribution system. Sway control brackets ensure that your trailer stays in line with your tow vehicle. 2" Hitch ball and adjustable shank included.


  • Evenly distributes weight over axles of tow vehicle and trailer for stability and control
    • Creates a level ride for both tow vehicle and trailer
  • Integrated 4-Point Sway Control limits side-to-side movement
    • Brackets keep spring bars in place for a rigid system that holds trailer in line
    • No lift chains - eliminate unwanted movement
    • Steel-on-steel friction helps to minimize sway caused by winds or sudden maneuvers
  • Unique design makes system compatible with surge-type brake actuators
  • Spring bars flex for a controlled, even ride
    • Constructed of chromoly steel for superior dexterity and spring
  • No-drill, clamp-on brackets can be adjusted along the trailer frame
    • Accommodates frame-mounted items such as gas tanks, battery boxes, toolboxes, or generators
  • Desired tilt is achieved with traditional washer design
    • Add or remove washers from spacer rivet to tilt head up or down
  • Dipped steel construction is durable and corrosion resistant
  • Snap-up lever eases installation by reducing lifting required by trailer jack
  • System includes head assembly, adjustable shank, spring bars, sway control brackets, 2" hitch ball, lift handle, pin and clip, and all necessary hardware
    • 1-7/8" Thin walled socket (EQ70-00-4800 - sold separately) recommended for hitch ball installation
  • Made in the USA


  • Tongue weight: up to 400 lbs
  • Gross towing weight: 4,000 lbs
  • Ball size: 2"
  • Fits: 2" x 2" trailer hitch receivers rated for use with weight distribution systems
  • Sway control bracket positioning: 25" - 32" back from center of coupler
  • Maximum trailer frame height: 6"
  • Shank length:
    • 8" From center of hitch pin hole to center of adjustment holes
    • 9" From center of hitch pin hole to front of shank
    • 7" From center of hitch pin hole to back of shank
    • 12" Overall
  • Total height adjustment along shank: 7-1/2"
    • Maximum rise: 7"
    • Maximum drop: 3"
    • Overall height: 9-1/2"
    • Holes are spaced 1-1/4" apart on center
  • Spring bar dimensions: 36" long x 1" wide
  • Limited lifetime warranty


Included w/ SystemRequired - Sold SeparatelyOptional Add-Ons

90-00-0400 Equal-i-zer Weight Distribution Hitch

  • Weight Distribution Shank
  • Weight Distribution Head
  • 2" Chrome Hitch Ball
  • 2 Sway Control Brackets
  • 2 Spring Bars
  • Snap-up Lever
  • Spacer Rivet and Washers
  • Hitch Pin and Clip
  • Necessary Installation Hardware
  • Thin Walled Socket for Installation of Hitch Ball

Weight Distribution Diagram

Create a more stable ride for your tow vehicle and trailer with a weight distribution hitch. Adding spring bars to your towing system applies leverage, which transfers the load that is pushing down on the rear of your vehicle to all the axles on both your tow vehicle and your trailer, resulting in an even distribution of weight throughout. The result is a smooth, level ride, as well as the ability to tow the maximum capacity of your hitch.

Selecting a Weight Distribution System

The tongue weight rating is the most important factor in determining which size weight distribution system you should use. If the bars of the system you choose are rated too high for your setup, they will create a rigid ride, which can result in a bouncing trailer. If, on the other hand, the bars are not rated high enough, the system will be unable to properly distribute the weight, rendering it virtually useless.

To determine the proper weight rating for a weight distribution system, you must first determine your trailer's tongue weight. Then add to that the weight of the cargo behind the rear axle of your tow vehicle. These two measurements make up the tongue weight rating for a weight distribution system.

Features of the Equal-i-zer

Head Tilt Adjustment

Controlling head tilt with traditional washer method

The Equal-i-zer weight distribution system uses the traditional washer-style adjustment method to achieve the perfect tilt. Controlling the head tilt helps you to fine-tune the leverage on your entire system, making it easier to install and hook up the spring bars. To adjust the tilt, simply slide washers onto the spacer rivet and insert the rivet into the head assembly. To increase the angle, add a washer. To reduce the angle, remove a washer. Most setups take four to six washers to achieve the proper height. Once you get the desired tilt, insert the shank bolts to secure the head to the shank and then tighten it in place.

Construction of Spring Arms

The Equal-i-zer spring bars are not made of traditional spring steel. Rather, they are constructed of a chromium-molybdenum alloy steel. Chromoly steel has a high tensile strength for extreme durability. It also features excellent dexterity, which allows it to give as required and then return softly back to its original form. This pliability is important in minimizing trailer bounce while still ensuring that the weight of your rig is adequately distributed.

Fixed Sway Control Brackets

Installation of Sway-Control Brackets

The unique sway control brackets of the Equal-i-zer are easy to install and simple to use. They clamp onto your trailer frame and conveniently adjust to a position anywhere between 29 inches and 32 inches back from the coupler. These brackets provide the attachment points for the weight distribution spring bars. To position the spring bars during hookup, simply use the included snap-up lever to lift each bar into place on the L-shaped brackets. Then secure the bars in place with the included L-pins and clips.

Equal-i-zer Hitch 4-Point Sway Control

The Equal-i-zer weight distribution system works to stop trailer sway before it begins. This is achieved through the rotational friction that is present in the weight distribution hitch itself. Within the system head, the downward pressure that is placed on the hitch ball by the trailer is combatted by the upward pressure exerted by the spring bars that are mounted in the sockets. This upward force is placed on the spring bars on either side of the system, creating the rotational friction that, essentially, forces your trailer in line. This type of friction is responsible for two points - one on either side of the trailer - of the 4-Point Sway Control. To ensure that enough tension is present, make certain that the socket bolts in the head assembly are torqued to at least 45 foot-pounds.

Points within the Equal-i-zer system where upward and downward forces interact to create rotational friction

The other two points of sway control are created by the steel-on-steel friction that occurs when the spring bars slide within the L-brackets that are mounted on the trailer tongue. Most traditional weight distribution systems have spring bars that are suspended by chains. Although this ensures that the system is not so rigid as to create bounce in the trailer, it also allows a good deal of side-to-side play in the system. Letting the spring bars hang freely minimizes the rotational friction described earlier. It also eliminates your system's ability to create the type of direct friction that has been shown to be so effective in limiting trailer sway.

This direct friction that is applied to the spring bars in the Equal-i-zer system helps to stop sway once it has begun. The concept is similar to the way in which an add-on friction sway control device functions. When each spring bar moves forward or backward, or side to side, it rubs along the bracket, creating friction. The resistance created by this action limits the movement of the spring bar, thus preventing further side-to-side movement of the trailer.

Most add-on units feature some sort of friction material similar to that used in automotive brakes. But the Equal-i-zer uses direct steel-on-steel contact to create resistance. This is the same sort of friction that is used with locomotives that pull loaded railcars weighing tons. No additional materials are needed. The steel will outlast any of those other materials, providing an extremely durable, functional sway control system.

EQ37040ET Equalizer Weight Distribution Hitch with Adjustable Shank and Hitch Ball - 4K

Installation Details EQ37040ET Installation instructions

Customer Reviews

Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 4,000 lbs GTW, 400 lbs TW - EQ37040ET

Average Customer Rating:  4.8 out of 5 stars   (585 Customer Reviews)

Steel-on-steel friction works to prevent and correct trailer sway in this unique weight distribution system. Sway control brackets ensure that your trailer stays in line with your tow vehicle. 2" Hitch ball and adjustable shank included.

- EQ37040ET

The Equilizer hitch has made towing much, much better for a short, single axle travel trailer. There is zero sway. The only issue we've had is that the brackets mounted to the trailer frame tend to slide or tilt occasionally, so periodic adjustment is needed. The hitch isn't as noisy as I was expecting. Love the easy setup and tear down, too.

- EQ37040ET

Excellent customer service and follow up thru the the entire process. Found what we needed when no one else could on etrailer

- EQ37040ET

Love the equalizer Hitch. Even more so I love this site. Awesome prices and I received my Hitch three days before I thought it would come.

- EQ37040ET

I ordered a weight distribution system for my camper. I needed rush delivery. The folks on the phone were great and I received the order on time and it worked out great.

- EQ37040ET

Great product. Pulled a rockwood A212 with a Nissan Murano made a world of a difference. Good Distribution of the weight.

- EQ37040ET

Love it! Highly recommend it!

Great product, recommended for any towing close to maximum capacity. Excellent sway control
DavidD - 05/17/2020

- EQ37040ET

Preston took a lot of time researching the right product for my application. He was patient while I got him the measurements. Thanks much.

- EQ37040ET

We’ve only used the hitch once but it’s been easy to use. Service was great! Would definitely buy again.

- EQ37040ET

- EQ37100ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

I rate this product "good" to alert potential users to an issue I face during installation of this Equal-i-zer hitch. As I purchased this hitch, a 2 and 15/16" ball with a 1.25" shank stud and its nut were included. That nut requires a special 1 and 7/8" thin walled socket that slips down into a cavity where the shank stud protrudes and the nut screws on. The instructions state that socket is available at Equal-i-zer dealers. Such a socket WAS NOT AVAILABLE at any automotive parts store, car dealership, nor agricultural supply hardware I contacted in the small California town I was in. The nearest Equalizer dealer to me was over 100 miles distant, and I had planned to leave the day I began installation of the hitch. The instructions also state that a shim can be used if a 2 and 15/16" ball with a 1" shank stud and nut are used. That is the ball I already had on my truck and I was fortunate to find a properly sized shim at an agricultural supply hardware that I cut to length and used in my installation. I still needed a large socket and extension to tighten the nut because the nut was deeply recessed in the cavity. The box end wrench I normally used on the nut was of no avail; however, an automotive repair shop had such a socket and loaned it to me to complete the installation of the hitch. IF you are going to undertake the installation of this hitch yourself, then be aware of the need for either the special Equal-i-zer specified socket for the ball included, OR a 1.25" to 1" shim and a deep well socket for the smaller 1" shank stud and nut such as I used. Contact customer service at Equal-i-zer if you have questions in this regard BEFORE you purchase. Having alerted you to the installation issue I faced, I now rate the product itself as EXCELLENT in performing the job it is intended to do when towing. Once I had the hitch installed, the instructions for making adjustments so it will perform as intended are clear. Along with the hitch I purchased a Sherline trailer tongue scale and that is an accessory I highly recommend. I was towing a 2-axle car trailer loaded with a vehicle for a total tow load of 5500 lbs. Using the tongue scale I adjusted my load so 10% was on the tongue. I was towing cross-country from California to Michigan with a 2010 Tacoma 4 x 4 rated with a 6500 lb towing capacity. I towed at 55-60 mph and had one incident that required immediate, heavy braking and the truck and trailer stopped perfectly, as if the trailer had no been there. So keep in mind, my rating of GOOD was to draw your attention to the installation issue I faced. The PEFORMANCE of the hitch was EXCELLENT.

The thin walled socket needed to install the hitch ball is available as a Related Item here at etrailer. Equal-i-zer offers such a socket as part # EQ70-00-4800
Thin Walled Socket for Equal-i-zer Hitches
. We have also found that the Powerbuilt 1-78 Inch Thin Walled Socket, part # ALL643216
1-7/8" 12pt Thin Walled Socket - 3/4" Drive - Chromium-Vanadium Steel
, works well with the Equal-i-zer system.
-- Etrailer Expert Victoria B - 10/08/2019

My Equal-i-zer hitch continues to perform as I had wanted and described in my review. It has an unstated safety benefit. I tow long distances without a load on my trailer. I keep the Equal-i-zer hitch fully installed but adjusted so there is only mild tension transferred forward. That keeps the receiver ball housing on the tongue of the trailer constantly pressed against the hitch ball. If for any reason the ball coupling lock should fail or have not been set, the trailer would remain coupled to the truck.
Wilton M - 09/27/2020

- EQ37140ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

Product is fine but shipping is horrible. Items arrived in boxes that were falling apart. UPS had to tape a whole box and parts were falling out when it arrived. Haven’t had a chance to check to see if everything is even in the box. Not acceptable.

I will have Customer Service reach out to you.
-- Etrailer Expert Thomas M - 01/14/2022

- EQ37100ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

World of difference, my wife's truck is our tow pig (2500 yukon) and the nose barely rises even with 750+ lbs on the tongue (~1/2"-3/4"), but you can feel a huge difference with/without WD and sway control. Steering is significantly more positive and responsive due to more weight on the front axle and the trailer handles the wind much better. Excellent product that is easy to install WITH THE EXCEPTION OF THE BALL. I recommend going to an RV place to get the ball put on the head (and I am a VERY handy guy) if you don't already have a massive torque wrench and the random thinwall socket. Not worth the hassle.

A year into ownership, this thing is even better than I originally thought. I will never consider towing heavy of towing largewind affected trailers without this setup. This hitch makes what is a terrifying experience even at 45mph towing our 32+foot travel trailer in heavy winds trust me, Ive tried with a regular hitch setup into a stress-free experience up to 65mph in the same conditions. Awesome piece of kit no true tow rig should be without!
Mason - 07/02/2021

- EQ37140ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

The sway control is awesome. The quality and durability of American steel is impeccable in this WDH. I had one on my previous trailer. When my new trailer came with a chain type WDH last year I couldn't wait to replace it with an Equal-i-zer WDH. I highly recommend Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 14,000 lbs GTW, 1,400 lbs TW. I tow a 2020 Rockwood 2604 SW with a 2017 Toyota Tundra.

- EQ37140ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

Would highly recommend this hitch. My new travel trailer weighs 9,500 empty and was swaying like crazy in a cross wind. Switched over to the equalizer and now the setup is rock solid at all speeds and even with a substantial cross wind. We needed to make this upgrade since many of our trips are on the Columbia River, Washington, and Oregon Coasts. Don't purchase a cheaper hitch, I bought a less expensive 14k hitch and then bought this one after the 3rd trip. I cant seem to find a buyer for the cheapo one now and its just taking up shop space and my money. I installed and set up the hitch in about an hour with a socket set, torque wrench, level, and tape measure.

- EQ37100ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

I received this hitch a few short days after placing my order and as soon as it arrived I unpackaged it to admire the contents. Everything was intact and ready to assemble, just as expected. I also ordered the special thin walled socket, which I am glad I did since my mechanic friend that did my torquing didn't have a socket that would work for this hitch ball. I know it is expensive but I wanted everything done right. I installed the hitch and set it up following the directions in the manual, and everything turned out perfectly. I think from start to finish it took the wife and I less than an hour and a half. Easy, and according to my measurements and a visual everything looked perfect. None of this is rocket science, and the installation is truly easy. Well, time to try it out, and what great timing, we left Saturday morning in a 40 MPH headwind for 20 miles, and then another 25 miles with the wind quartering at us on a busy highway. This hitch worked flawlessly! I was tickled with the whole ordeal, and today coming back with no wind at all it wasn't much different than the day we had the wind. You know what wind means, right? WINDY IN ND. Yep, we get our share. This hitch served us very well, and I am extremely pleased with my purchase and the ease of installation and set up. I would order it again in a heartbeat. My tow vehicle: 2018 GMC Sierra 1500 with max trailer tow package. 6.2 L with 8 speed transmission. My travel trailer: 2016 Jayco Octane SL, weighs in loaded at 6100 lbs with a hitch weight of 910 lbs.

A whole year has gone by, and Im still extremely satisfied with my equalizer hitch. I hear the squeaks when I make my turns, I know people talk about this hitch being slightly noisy, but every time I hear it I smile. I know its back there, doing its thing, and it does it extremely well. I would buy this hitch again in a New York minute. I am very pleased. Did I say Im VERY pleased? Lol. Its that good.
Richard P - 06/04/2019

- EQ37120ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

I have been using this EQ hitch towing my Bullet crossfire travel trailer with my F-150 for over a year now and it handles great. Tows smooth and without jerking or a rough ride. It took a few times to properly balance it and adjust it properly but what a major improvement from towing without it. I recommend this EQ hitch very much!!

Excellent! I have towed over 5000 miles in 2 years with this hitch now and it is still like new. What a great purchase.
MarkG - 01/24/2020

- EQ37100ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

Just received and put together my Equalizer hitch but not set up or used with our new travel trailer yet. The quality of the parts are amazing. I have used other weight equalizing hitches and have 5th wheel hitch systems. This system is heavy duty and a pleasure to put together. Etrailer did a great job on the website describing, illustrating and proving support to make my decision so easy. Thanks Etrailer. Going to pick up new travel trailer today with new hitch system.

I am pulling a 34 foot travel trailer that weighs 7,280lbs. I am very comfortable and feel secure while towing with the equalizer hitch system. There is absolutely no sway even when tractor trailer pass by. I have used other sway control products and systems where I encountered sway and white knuckle rides. I highly recommend the Equalizer 4 point sway control system to anybody thinking about a new or replacing a current system.
Tony - 09/06/2019

- EQ37101ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

Product is well made and sturdy. Installation instructions were simple and easy to follow. Took about 2 hours from start to finish to install. The problems it solved for me were the truck sagging in the rear when my car hauler is coupled. Now the truck is level along with the trailer. Also when semi's pass by the entire set up is steady. No shaking or swerving. Wish I had put this on sooner. Very pleased.

After a year of use I can say that the Equalizer has lived up to its promise. It is extremely helpful when hauling autos around in our enclosed trailer. We consider it just part of the normal hauling equipment now.
Mark T - 08/14/2019

- EQ37100ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

Great product. I use it with my '21 Tundra Crewmax SR5 Sport and a 34' Keystone Bullet 290BHS RV. However, there is one major hang up. You have to get your own 3/4 drive 430-foot pound torque wrench and 1-7/8 thin walled socket in order to install and tighten the hitch ball. I had to rent that torque wrench which is about 4' long. Neither Home Depot or Lowe's had it. But Lowe's had the socket. The hitch ball should come pre-tightened to save the customer all this hassle and run around. Be aware of this issue.

- EQ37100ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

This equalizer works great for my 2021 Dodge Durango towing a 7x14 tandem axle trailer. Practically eliminates all trailer sway... especially from the large trailer trucks that may pass you.

- EQ37100ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

Fantastic piece of gear. Super heavy-duty. Made my truck and trailer ride so much smoother, brought the back end of my 3/4 ton truck back up to level, and completely eliminated the the swaying I would get from time to time with my dump trailer. Instruction manual that came with the kit was very detailed and well-written. One minor complaint: it would be nice if the ball came mounted to the hitch assembly because most of us don’t have a torque wrench that goes to 430 feet pounds. Beyond that, an excellent investment.

- EQ37141ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

Danielle h is very good at her job tell her what you want and you shall receive. I was very picky I have a 6” jacked up 2500 ram on 37” tires she got me the hitch I needed for my camper. It also was supposed to take more time to get and it delivered 5 days early. Thank you Danielle h

- EQ37101ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

Very satisfied with this hitch. We used the hitch for a total 8000 miles last year. Once I adjusted the hitch to the truck it was a noticeable difference. Pulls that sag out of the back of the truck and leveled the truck. Feels tight in the high wind areas.

- EQ37101ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

Picked up my new trailer, traveled through rush hour traffic in heavy rain and wind. Trailer didn't budge an inch, pulled with ease and confidence. Phone Staff was extremely helpful with getting the right product for my needs and it was shipped out immediately putting me on schedule. Excited to hit the road. Thanks etrailer!!

- EQ37120ET

Review from a similar 4-Point Sway Control in Weight Distribution Hitch

I purchased this hitch for a 9000lbs travel trailer with a 1001lbs tongue weight. If your debating between a less expensive round bar and this setup, spend the money. This hitch is by far a better, easier, and safer setup. I purchased this hitch to replace a Pro-series round bar with a friction sway control bar. The Equal-i-zer's 4 point sway control is big step up from a single point sway control system. The 1st drive felt secure and safe. Install was easy, but time consuming for a 1st time installer. But worth it in the end. Here's some pointers. 1. get the right tools, rent or barrow a the torque wrench to do the hitch ball 430ft/lbs, and shank bolts 320ft/lbs. The piece of mind that it's correct is worth it. 2. Plan for the afternoon, not a couple of hours. 1st setup is going to be close but your going to have to adjust it so plan on taking something apart. but setup is relatively easy, esp with the right tools. I had the trailer level the 1st go around to 2.5". So I had to move the head up one hole in the shank and then it was within 1". Distribution setup was still with in a proper setup, so I didn't have to make any further adjustments. As far as the coupling and uncoupling the hitch. Using the tongue jack to release the tension is easy to do and quick. Esp. with an electric jack. I never liked the round bar with chain setup on my previous hitch. High quality, easy install and setup, and seems to have great sway control.

Show More Reviews

Ask the Experts about this Equal-i-zer Weight Distribution Hitch

  • Lubrication for Equal-i-zer Weight Distribution
    The only lubricant we recommend for use with the Equal-i-zer weight distributions is the Equal-i-zer High-Performance Lubricant # EQ91-00-4250.
    view full answer...
  • Economical Weight Distribution System for 3,000 Pound Trailer
    When picking out a weight distribution hitch the most important factor to consider is your total tongue weight. This number includes both the loaded tongue weight of your trailer plus any added cargo you have stored behind the rear axle of your Jeep Wrangler. Ideally this number will fall somewhere near the middle of the operating range for the system you choose. You mentioned a tongue weight of less than 350 pounds and a total trailer weight of less than 3,000 pounds. If these weights...
    view full answer...
  • Weight Distribution System to Provide Best Possible Ground Clearance
    With weight distribution/sway control (WD/SC) systems the best ground clearance generally comes from trunnion-style setups like the Equal-i-zer # EQ37040ET that you referenced. These systems' bars do connect to the side of the head assembly, rather than up into its bottom surface like round-bar systems such as Pro Series # PS49901. This is where their better clearance comes from. We do not offer any system whose bars attach to the top surface of the head assembly although one of my associates...
    view full answer...
  • How Tall of a Trailer Frame Will the Equal-i-zer EQ37040ET Weight Distribution Hitch Fit On?
    Yes. The Equal-i-zer # EQ37040ET will fit on trailers with frames as tall as 6", so this weight distribution hitch will fit on your trailer with a 3" tall frame. In order to install the hitch ball on your Equal-i-zer weight distribution hitch it is recommended that you use the Thin Walled Socket for Equal-i-zer hitches # EQ70-00-4800.
    view full answer...
  • Weight Distribution/Sway Control System for 1999 Featherlite 4926 20-Foot Enclosed Trailer
    The 20-foot Featherlite trailer model 4926 uses two 3500-lb axles and it has a dry weight of 2900-lbs according to the Featherlite online guide. But the key to choosing a weight distribution/sway control (WD/SC) system is knowing the actual tongue weight (TW) of the trailer when it is loaded up for the road, not just the empty trailer's dry weight. We offer a handy scale # 5780 that makes measuring TW easy. Since Featherlite trailers use aluminum construction I suggest checking with...
    view full answer...
  • Maximum Distance For Mounting Sway Bracket For Equal-i-zer Weight Distribution System
    The maximum distance the center of the sway brackets can be moved is the 32-inches as described in the installation instructions. Moving the bracket out further could create a problem when making turns if the spring bar fell out.
    view full answer...
  • Recommended Weight Distribution System for 2017 Rpod 178 Camper
    Thanks for the kind words! Before we get into the best weight distribution solution for your needs you should note that the best way to fight sway is in how you load the trailer. If you can move as much weight to the front of the trailer and make sure it is sitting as level as possible that will be your best way to prevent the sway. Now the best way to pick out a weight distribution system is to base it off of the loaded tongue weight of the setup when it is loaded and ready to tow....
    view full answer...
  • Weight and Sway Distribution Hitch for 2018 Forest River R-Pod 189
    Your 2018 Forest River R-pod 189 will require a 2" ball. I recommend the Equal-i-zer Weight Distribution System # EQ37040ET as it best meets your weight specifications. A 2" ball is included with this hitch. The Equal-i-zer also features a 4 point built in sway control system that dramatically reduces sway.
    view full answer...
  • Replacement Parts To Make Equal-I-zer Weight Distribution System Compatible with Rpod Trailer
    The Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 4,000 lbs GTW, 400 lbs TW # EQ37040ET is the size you want for your 178 Rpod trailer. The 1000 lb system will cause problems for that small a trailer because it will be too rigid. I recommend getting the replacement parts to make the most of your free system and give you what will actually help you. You will want the Replacement Head for Equal-i-zer Weight Distribution Systems - 400 lbs TW # EQ90-02-0400 and Replacement...
    view full answer...
  • Replacement L-Pins for 4,000 Pound Equal-I-Zer Weight Distribution System
    The replacement L-pins for the 4,000 pound Equal-I-zer Weight Distribution System # EQ37040ET are part # 90-03-9460. The clips for the pins are part # 90-04-9208.
    view full answer...
  • Weight Distribution System Recommendation for 1,800 lb Trailer
    The best way to pick out a weight distribution system is to base it off of the loaded tongue weight of the setup when it is loaded and ready to tow. This figure also includes the weight of any cargo behind the rear axle of the tow vehicle. I attached a help article on determining tongue weight for you to check out as well. You will want the loaded tongue weight of your setup to fall right in the middle of the tongue weight range of the system you use. For an 1,800 lb trailer the tongue...
    view full answer...
  • Weight Distribution System for a 2017 Jeep Wrangler Unlimited and 2,500 Pound Trailer
    The first thing you will want to do is make sure the trailer hitch on your Jeep is rated for use with weight distribution. Not all hitches are. If yours is then there should be a sticker on the hitch that lists a separate capacity when using weight distribution like the aftermarket Class III hitches, such as # 76104, that we have. Assuming the hitch is rated for weight distribution it is possible that the tongue weight capacity is still the same 350 pounds so keep that in mind because...
    view full answer...
  • Equal-I-zer Weight Distribution for an Airstream Sport with 375 Pounds Dry Tongue Weight
    I am assuming that the 375 pounds is the dry tongue weight. If that is the case then once the trailer is loaded and ready to tow it will be over 400 pounds. Also when calculating tongue weight for weight distribution you also have to add in the weight of anything loaded behind the rear axle of the tow vehicle. For example, if your tongue weight is 400 pounds and you have 100 pounds of gear behind the rear axle of the tow vehicle then the total tongue weight is 500 pounds. Between...
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  • Are The Sway Bars Of The Equal-i-zer Weight Distribution System Supposed To Be Greased?
    The Equal-i-zer Weight Distribution System w/ 4-Point Sway Control - 4,000 lbs GTW, 400 lbs TW # EQ37040ET uses 4 point metal on metal friction to control sway. You definitely DO NOT want to use grease on these trunnion bars. That would cause the system to not operated as intended.
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  • Hitch Ball for Equal-i-zer Weight Distribution System
    Equal-i-zer weight distribution system # EQ37040ET, which is the same as the product you referenced does not require a 2-5/16" hitch ball; I took a look at the Equal-i-zer site and could not find a reference to that. However, if you need a 2-5/16" ball then the right one would be the 2-5/16" Hitch Ball for Equal-i-zer Weight Distribution Systems # EQ91-00-6100. It is also recommended you use Thin Walled Socket for Equal-i-zer Hitches # EQ70-00-4800 to make installation of this ball a little...
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  • Correcting Sag For A 2012 Toyota Rav4 V6 With Tow Package Pulling A 2,600lb Trailer
    What your describing is very common in towing because the tongue weight of your trailer is transferred to the rear axle. As a result the back end can slump and the nose of your vehicle point up, causing reduced traction and sometimes sway. To address this, weight distribution hitches help spread that load over the axles of both the tow vehicle and the trailer. The first thing you need to know to select a weight distribution hitch is to know your total tongue weight. To determine...
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  • Capacity for the Head of the Equalizer Weight Distribution System EQ37040ET
    The head of the part # EQ37040ET is part # EQ90-02-0400 and has a 400 lb tongue weight capacity and 4,000 lb trailer weight capacity with the spring bars used or not. You may be thinking of how some trailer hitches have two weight capacities. One with a WD system and one without a WD system.
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  • Best Weight Distribution System with Sway Control for a Tritoon Boat Trailer
    In order to help prevent and reduce trailer sway while pulling your boat/trailer with your 2014 Ford Expedition you are going to want to use a weight distribution system with integrated sway control. In order to determine which unit is correct for you, you will need to find the loaded ready to tow tongue weight of your trailer and add that to any cargo stored behind the rear axle of the tow vehicle. The sum of these two figures will be what is referred to as total tongue weight (TTW). This...
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  • Recommended Weight And Sway Distribution Hitch For a 1996 Jayco Jay 1207 Pop Up Camper Trailer
    I recommend the Equal-i-zer Weight Distribution System # EQ37040ET for your 1996 Jayco Jay 1207 tent trailer. This system uses a built in 4 point sway control to reduce trailer sway and there is no need to remove any parts before backing up and maneuvering your Jayco. This system is rated for trailers up to 4,000lbs with a tongue weight up to 400lbs. The information I could find on your Jayco puts you at 1,800lbs total weight so that leaves you room to upgrade your camper in the future....
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  • Weight Distribution for 2017 Ford Escape Towing Camper With 160 lb Tongue Weight
    In order to choose the best weight distribution system, you will first need to know your total tongue weight (TTW), which is the tongue weight of your fully loaded and ready to go trailer plus the weight of any cargo behind the rear axle of your 2017 Ford Escape. I am not certain if the 160 lbs you gave is the unloaded tongue weight, but the tongue weight is typically between 10% and 15% of your trailer's GVWR. You are going to want to verify this by using a scale such as the Sherline #...
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  • Recommended Weight Distribution System to Maximize Towing Capacity on 2016 Honda Pilot
    When you are trying to get the top towing weight out of your 2016 Honda Pilot, you are wise in looking into a weight distribution system. The way you choose a weight distribution system is based mostly on the total tongue weight. The total tongue weight is the amount of weight in lbs resting on the hitch receiver when the trailer is loaded plus the weight of any cargo loaded in the tow vehicle behind the rear axle (in the cargo space). Too much tongue weight makes the tow vehicle sag...
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  • Best Weight Distribution System for a Keystone Outback 31
    The best weight distribution system we carry is the Equal-i-zer Weight Distribution System. This system has four point sway control which unlike most other systems will both prevent and reduce trailer sway. Most other systems only work to reduce trailer sway as it occurs but do little to prevent it from happening entirely. In order to choose the correct Equal-i-zer Weight Distribution System you will need to know your total tongue weight (TTW). The total tongue weight is calculated...
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  • Equal-I-zer Weight Distribution/Sway Control Hitch for Trailer with Loaded Tongue Weight of 400-lbs
    The linked video and article are great resources to give you all the important information you need to choose the right WD/SC system for your 3000-lb trailer. The real key is knowing the actual fully-loaded trailer tongue weight (TW) with all your usual gear and supplies loaded up. We have a handy scale # 5780 that makes it really easy to measure accurately (and frequently) so that you can develop a good sense for when your trailer is properly-loaded. Ideally the TW of a trailer will...
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  • Recommended Weight Distribution System and Sway Control for a 2011 Toyota RAV4
    When choosing a weight distribution system, it is key to know your trailer's loaded and ready to tow tongue weight. To this tongue weight you will need to add the weight of any cargo behind the rear axle in the back of your 2011 Toyota RAV4. Once you know the loaded and ready to tow tongue weight of your trailer, it will be easier to choose a properly rated weight distribution system. Also, double check your vehicle owner's manual to see how much weight your 2011 Toyota RAV4 can tow. It...
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  • Light Weight Weight Distribution System for 2008 Nissan Frontier Towing Camper
    Weight distribution systems are somewhat heavy, but a simple setup like the Equal-i-zer part # EQ37040ET would be your best option. It has sway control built into the head and bars so the weight needed for it is pretty minimal. It weighs in at 67 lbs. It has a tongue weight range of up to 400 lbs so it would be a great solution for your trailer's tongue weight as well.
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  • What 2-5/16-Inch Hitch Ball Fits Equal-i-zer 4-Point Weight Distribution System EQ37040ET
    The Equal-i-zer 4-Point Sway Control Weight Distribution System # EQ37040ET comes with a 2-inch hitch ball but a 2-5/16-inch ball # EQ91-00-6100 can be installed. A thin-walled socket like # EQ70-00-4800 is recommended for ball installation.
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  • Mounting of Equal-I-zer Brackets to Trailer When Propane Tank Tray Location Interferes
    For your Equal-i-zer Weight Distribution System w/ 4-Point Sway Control # EQ37040ET since your tray is right at that 25-32 inches back from the center of your coupler where your brackets need to be, the best solution to use this system is to drill into your frame and directly mount your brackets to the frame at the height you need. This may require modifying the height of your brackets depending on your tray and tank fit.
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  • How To Measure To Ensure Proper Weight Distribution System Setup
    The owner's manual for the weight distribution system should have a section that details how to check that the system is setup and adjusted properly. This is usually done using a series of measurements of the tow vehicle loaded/unloaded. I have attached a clip below which is from the instructions for the Equal-i-zer Weight Distribution Systems like part # EQ37040ET. I am not aware of anyway to verify setup using standard scales.
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  • Recommended WD System for a 2015 Honda CR-V Pulling a 1,400-lb Boat
    To determine which Weight Distribution (WD) system is correct for your setup you will first need to find the Total Tongue Weight (TTW) of your setup. This includes the Tongue Weight (TW) of your fully loaded and ready-to-go trailer as well as the weight of any cargo behind the rear axle of your 2015 Honda CR-V. Keep in mind that a correctly loaded trailer with have a TW that is 10-15% of its loaded weight. I recommend using the Sherline Trailer Tongue Weight Scale # 5780 to make sure that...
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  • Weight Distribution System Recommendation For A 2016 Nissan Frontier
    For your 2016 Nissan Frontier, we have the Equal-i-zer Weight Distribution System w/ 4-Point Sway Control # EQ37040ET. This is the smallest WDS we offer with a max tongue weight of 400lbs, and a max gross towing weight of 4,000lbs. This WDS fits 2" x 2" trailer hitch receivers rated for use of a WDS like # e98869. Additionally, you'll want to properly measure your tongue weight to ensure that hitch will work for you. Your tongue weight is the dry weight so when loaded may be over...
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