1. Weight Distribution Hitch
  2. Reese
  3. 100 lbs
  4. 200 lbs
  5. 300 lbs
  6. WD With Sway Control
Reese Steadi-Flex Weight Distribution System w/ Sway Control - Trunnion - 4K GTW, 400 TW

Reese Steadi-Flex Weight Distribution System w/ Sway Control - Trunnion - 4K GTW, 400 TW

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Retail:$1,144.73
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Weight Distribution Hitch
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66557 - Fits 2 Inch Hitch Reese Weight Distribution Hitch
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Product Expert Lindsey S

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

Yes, if you:

  • Experience pretty significant trailer sway on a regular basis
  • Don't want to have waste time with difficult, outdated adjustment methods during setup
  • Have a lightweight trailer with 250 lbs – 400 lbs of tongue weight

No, if you:

  • Want a maintenance-free hitch - you'll have to tighten and eventually replace the friction pads on this
  • Hate noise - the friction pads minimize grinding sounds, but the system is still pretty loud during turns
  • Don't have a big problem with trailer sway - you might just end up with a really rigid ride
Friction in brackets and in head works to prevent and correct trailer sway. Chainless brackets with automotive-style friction pads hold spring bars firmly in place to help keep trailer in line with your tow vehicle. Adjustable shank included. Lowest Prices for the best weight distribution hitch from Reese. Reese Steadi-Flex Weight Distribution System w/ Sway Control - Trunnion - 4K GTW, 400 TW part number 66557 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (186)
  • Q & A (167)
  • Photos
  • Why etrailer?

Reese Weight Distribution Hitch

  • 100 lbs
  • 200 lbs
  • 300 lbs
  • WD With Sway Control
  • Fits 2 Inch Hitch
  • Allows Backing Up
  • Includes Shank
  • Reese
  • Electric Brake Compatible
  • Surge Brake Compatible
  • Reduces Sway
  • 4-Point

Friction in brackets and in head works to prevent and correct trailer sway. Chainless brackets with automotive-style friction pads hold spring bars firmly in place to help keep trailer in line with your tow vehicle. Adjustable shank included.


Features:

  • Evenly distributes weight over axles of tow vehicle and trailer for stability and control
    • Creates a more level ride for both tow vehicle and trailer
  • Integrated sway control limits side-to-side movement of trailer
    • Brackets keep spring bars in place for a rigid system that holds your trailer in line
      • No lift chains - eliminates unwanted movement of spring bars
      • Automotive-grade friction material lines brackets to help correct any sway that may occur due to winds, curvy roads, or sudden maneuvers
    • System head provides frictional resistance to limit movement of spring bars
  • Trunnion spring bars are hot rolled and tapered for superior strength and flexibility
    • Bars flex appropriately over uneven terrain for a controlled, even ride
  • Desired head tilt is achieved with traditional washer design
    • Add or remove washers from spacer rivet to tilt head up or down
  • No-drill, clamp-on brackets can adjust along the trailer frame to accommodate frame-mounted items such as gas tanks, toolboxes or generators
  • Included lift handle eases installation by reducing lifting required by trailer jack
  • Steel shank has corrosion-resistant powder coat
  • System includes head assembly, adjustable shank, trunnion spring bars, sway control brackets, lift handle, pin and clip, and all necessary hardware
    • Hitch ball sold separately - requires 1" diameter shank


Specs:

  • Tongue weight: 250 lbs - 400 lbs
  • Gross towing weight: 4,000 lbs
  • Fits: 2" x 2" trailer hitch receivers rated for use with weight distribution systems
  • Maximum trailer frame height: 6"
  • Maximum trailer frame width: 1-3/4"
  • Sway control bracket positioning: 25" - 32" back from center of coupler
  • Shank length:
    • 7-3/4" From center of hitch pin hole to center of adjustment holes
    • 8-3/4" From center of hitch pin hole to front of shank
    • 6-3/4" From center of hitch pin hole to back of shank
    • 12" Overall
  • Total height adjustment along shank: 8-3/4"
    • Maximum rise: 7-1/2"
    • Maximum drop: 2-3/4"
    • Overall height: 10"
    • Holes are spaced 1-1/4" apart on center
  • Limited lifetime warranty


Included w/ SystemRequired - Sold SeparatelyOptional Add-Ons
  • Adjustable Shank
  • System Head
  • 2 Sway Control Brackets
  • 2 Spring Bars
  • Lift Bar
  • Hitch Pin and Clip
  • Necessary Installation Hardware
  • Hitch Ball w/ 1" Diameter Shank
n/a

Weight Distributing Hitch

Create a 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.


The flat spring bars of this system slide into the weight-distribution head for quick, easy installation. These bars offer superior flex, ensuring a smooth, controlled ride for both your tow vehicle and your trailer.


Integrated Dependent Sway Control

The Steadi-Flex weight distribution system works to stop trailer sway before it begins. This is achieved in 2 ways. First, the system head is designed to firmly hold the spring bars in place to provide tight resistance and help ensure that your trailer tracks behind your vehicle. Second, the spring bar brackets that mount on your trailer's frame produce friction with the bars whenever any side-to-side motion occurs. This keeps the bars from moving, also helping to hold your trailer in a straight line.


System Head with Steel-on-Steel Friction

System Head

The head of the Steadi-Flex system firmly holds the spring bars in place at the hitch point. This tight hold helps to keep the bars from moving, which in turn helps to ensure that the trailer is held firmly in place behind your vehicle. If any sway or side-to-side movement does occur, the spring bars will move only slightly inside of the system's head. This steel-on-steel contact produces frictional resistance to limit further side-to-side motion of the bars, limiting the motion of your trailer in the process. The Steadi-Flex head is wider than most weight distribution heads. This design allows for greater surface area for the spring bars to move against. This makes it easier to produce the friction that resists sway.


Sway Control Brackets with Automotive-Grade Friction Material

Friction Material Brackets

The spring bars attach to the trailer frame with fixed, sturdy steel brackets. They sit on top of the brackets instead of being suspended by chains like the bars that are on traditional weight distribution systems. Chain suspensions typically allow a good deal of side-to-side play in the system. Because the Steadi-Flex has brackets in place of chains, that unwanted movement of the spring bars is eliminated. This helps to keep your trailer in line behind your vehicle. In addition, these brackets create friction to limit any side-to-side movement that may occur. When each spring bar on the Steadi-Flex system moves within the bracket, it rubs along the surface of the bracket, creating friction. This resistance limits the movement of the spring bar, thus preventing further side-to-side movement of the trailer.


Most systems with sway control brackets use bare steel brackets to create friction with the steel bars. Steel-on-steel friction typically causes a much louder ride, and it can result in wear and tear on the brackets themselves. The Steadi-Flex brackets, on the other hand, are lined with automotive-grade friction material. This material is more abrasive than bare steel, which allows more friction to build up faster and easier. The long-lasting friction material also reduces the banging noise created by the bars hitting the inside of the steel brackets. This provides a quieter ride while towing.


Fast, Easy Installation

The Steadi-Flex system is easy to install and set up. On the trailer side, simply clamp the spring bar brackets around your trailer's frame. Then prepare your vehicle by sliding the included shank into your 2" x 2" hitch receiver, and bolt on the head. The system head can be easily adjusted to achieve the proper angle and optimum leverage for your specific setup. No drilling is required to install this weight distribution system.


Head Tilt Adjustment

The Steadi-Flex system uses the traditional washer-style adjustment method to achieve the perfect tilt. Controlling the head tilt helps you to fine-tune the leverage and maximize the amount of tension in the whole system. To adjust the tilt, simply slide washers onto the adjustment pin and insert the pin into the head assembly. To increase the angle, add a washer. To reduce the angle, remove a washer.


Tapered Spring Bars

Spring Bars

The spring bars of the Steadi-Flex system slide into the weight distribution head for quick, easy installation. With a tapered design and hot rolled steel construction, these bars offer superior flex to evenly distribute the weight between your tow vehicle and your trailer.


The bars easily pin into place inside the system head - no need to torque or re-torque any trunnion bolts to adjust the tension. With fewer parts to manage, installing and maintaining the Steadi-Flex is simple.


Adjustable, Clamp-On Brackets

Adjustable Brackets

The spring bar brackets simply clamp around your trailer's frame - no drilling required. These brackets are designed to be positioned 27" to 32" back from your coupler and they can fit a wide range of frame sizes and can even be used on a trailer with a bottom-mounted coupler.


While other brackets use relatively thin L-pins to secure the spring bars in place on the brackets, the Steadi-Flex system uses steel pieces that are almost as wide as the brackets themselves to secure the bars. These retention brackets easily pin into place once wrapped around the spring bars. As a result, you can have greater piece of mind knowing that the spring bars are secure and less likely to rattle around inside of the brackets.



66557 Reese Steady Flex Light Duty Weight Distribution System with Sway Control - 4,000 lbs GTW, 400 lbs TW

Replaces 66041

Item # 66557

Installation Details 66557 Installation instructions


California residents: click here



Customer Reviews

Reese Steadi-Flex Weight Distribution System w/ Sway Control - Trunnion - 4K GTW, 400 TW - 66557

Average Customer Rating:  4.8 out of 5 stars   (186 Customer Reviews)

Friction in brackets and in head works to prevent and correct trailer sway. Chainless brackets with automotive-style friction pads hold spring bars firmly in place to help keep trailer in line with your tow vehicle. Adjustable shank included.

- 66557
by:

etrailer made shopping for weight transfer hitches easy. As usual I started by looking at prices and gravitated to the lower range. Once I started comparing features I kept narrowing my search until I bought this product which happens to be on the higher price category. The reason I bought this one? 1) the friction pads rather than sliding metal on the cheaper ones creates anti-sway that is built in and is quieter with no chatter like the metal ones. 2) The transfer arms are higher up and don't droop down giving more ground clearance. 3) The frame mounted pads create an anti-sway effect. Other systems use chains that do not have this anti-sway feature. They're cheaper but this is better engineering. Overall quality is excellent. All the hardware is quality stuff. The instructions are clearly written and easy to follow. I recommend this hitch over the others in this category. Spend the extra money, you won't regret it.


Comments
The weight distribution hitch works great. My rig is a Jeep Cherokee with R-pod which are well suited for each other. The hitch keeps the attitude of the truck level and it handles great. I would recommend this to others.
Matthew S - 07/08/2021


- 66557
by:

Yes, everything has worked out great! I attached a picture of the race car trailer hooked up to my 2011 Tahoe PPV. Made several trips this summer of at least 3 hours or more,fully loaded, and it towed perfect. The only thing I ended up having to do, was modify the solid drop hitch. Had to shorten it by 2" because it would bottom out occasionally. You guys have always given me great service, technical advice, and selection of products to work from.



- 66557
by:

We like the end result of using this hitch with our travel trailer. However, there are some quality issues. I have attached a photo that shows how the holes in two of the frame bracket assembly pieces did NOT line up. The holes in the other two pieces did align. Also, we had to replace the friction pads, after only one trip, and are still having a problem with one side having more tension on it than the other side. BUT, we are still very glad we are using the hitch, it has made such a difference in traveling with the trailer.



- 66557
by:

This product we purchased works great. Before I purchase this product my truck was not level or my trailer and it rode horribly and then we purchased this product and the truck is level and the trailer is level and rides nice and the trailer does not sway. I would suggest this product to anyone. Unfortunately I do not have any pictures because it’s winter where I live.



- 66557
by:

The Reese 66447 is just right for my single axle 3500# GVWR utility trailer. My slope mower is right at the maximum allowed net weight and the trailer is maximum allowed width. So sway and wander on these twisty WV back roads is not acceptable. This hitch restored my tow vehicle front height to normal and there was no sway or wander in the mountains. The install was easy and removal/replacement was quick. Very well made for a light application like this. In slow maneuvers the friction pads are LOUD, but when cruising I did not notice them. The delivery and follow-up from etrailer.com was first rate too.


Comments
It still deserves the 5 star rating.
Rooster - 06/03/2018



- 66557
by:

Using with 2003 Toyota Sequoia and a pop-up camper which is somewhere around 2,300lb and maybe 200-300lb tongue weight. Used this for a couple long trips, and it has worked great! The longest trip was 4,300 miles, and I'm very happy that I bought it! (#66557 weight distribution and sway control system.) It feels very stable towing at higher speeds. The truck doesn't bottom out over large bumps. The sway control works great - the camper stays right behind the truck and doesn't sway back and forth when changing lanes or in a strong wind. It feels much more stable at higher speeds than before. I had to buy longer safety chains for my camper because this hitch head is longer than my old drawbar ball mount. I also upgraded the camper tires from load range C to load range D, because the weight distribution shifts more weight to the tires, and the higher load rating should help them run cooler. And don't forget to buy a ball since it doesn't come with it. The initial Installation does take a while, so make sure you leave enough time before a trip to be able to take a test drive and re-do it if the heights and angles are not quite right. After starting the long trip, I didn't re-grease the sway bar front pivot, so I can see some wear marks on the bars. So now I bought a tub of grease (Item # 58117) to keep in the trailer so I can apply grease regularly to the front pivot.



- 66557
by:

We are using this hitch on a 2019 Scamp 16’ Deluxe camper, and towing with a Toyota 4Runner. Just completed nearly 5000 mile trip with this hitch towing our camper, and it worked absolutely great. We previously towed the Scamp with a standard hitch and a Ford Escape, and could not get above about 58 mph without experiencing uncomfortable trailer sway; even less in a cross wind. But with this Reese 66557 hitch we regularly cruise 65+ mph with ZERO trailer sway. It handles cross winds and passing semi’s with no problem. A very worthwhile, quality product. Our Scamp has dual LP tanks and battery on the front, but there was ample room to install the brackets on the trailer A-frame well within the required distance from the ball socket. I did need to remove the LP tanks and get a torque wrench and a larger socket to complete that part of the assembly. You will also need a torque wrench and larger sockets to assemble the vehicle end of things, too. I am not a mechanic, but was able to complete the assembly per the instructions with no problems. Everything has remained tight and secure after all those miles on all sorts of roads. When hooking up the trailer we do use the special tool that comes with the hitch to lift the torsion bars up onto the friction pads. Then it just takes a few seconds to put on the small brackets and clip pins to keep the torsion bars in place and you are ready to go. Unhooking is just as easy. And removing the entire draw bar assembly from the vehicle for a day trip without the trailer takes all of a minute. Backing and tight turns in the campground are no problem with this hitch. You do not need to remove anything to maneuver. The hitch does creak and groan a little in those maneuvering situations due to the torsion bars rubbing on the friction pads. But driving down the highway there is no noise from the hitch. A quality product, well designed and manufactured, with good assembly instructions. It has enabled us to travel safely and securely at highway speeds. After nearly 5000 miles we can highly recommend this product.



- 66557
by:

This hitch is the perfect fit for rv trailers in the 3000lbs to 3500 lbs range like my 17 foot Casita. Highly recommended.



- 66557
by:

Perfect solution for my tow vehicle and trailer combo. The ride is much better with no sway not even when passing tractor trailers.


Comments
Still very happy with the purchase one year later. The system is made of good quality. No broken parts or damages.
Tommie C - 04/05/2020



- 66557
by:

I bought the 4,000 lb Reese weight distribution system for my 3,500 lb GVWR pull behind trailer. I did install it myself and it works just like it says it does. It does make a loud noise when turning that is annoying. So I would recommend getting the chain type and not the friction one. But then you need the sway control arm. I did have the same problem another writer posted about that the brackets that hold the tension arms were the wrong ones and the holes did not line up but etrailer sent replacements right away that where the correct one. The hitch does not come with a ball so I brought it to a local trailer company that installed my trailer brakes and bought a ball from them for $11 and they installed it for free. It takes a thin wall socket and 140 foot lbs of torque! Otherwise it was simple to install myself. As long as you have a 3/4 in socket 1/2 in drive. Also, be aware that the trailer tongue arms dimensions must be no more than 1 1/2 in wide and at least 3 1/2 in tall or it will not fit. I would recommend calling the company to insure to get the correct weight distribution system so if you have a problem later they will have to honor it.



- 66557
by:

Works great. I tow a 3,500 lb bayside pop up camper with my 2009 Nissan Pathfinder. Without the weight distribution and sway bars the system would be unsafe to tow at freeway speeds. With the system it is solid and I have felt comfortable even on winding mountain roads. Installation was straight forward and took 1-2 hours. I would absolutely get a system like this that is backup capable. The brake pad material is holding up well after 1 year.



- 66557
by:

I have used it several times to pull a 3000 lb travel trailer and it has worked very well. My tow vehicle stays level and swaying is damped. The setup is straight forward but takes a little time. I did it in a flat paved parking lot. I added an electric jack on the trailer tongue. This makes attaching and detaching much easier. The only issue I have is that the pads the springs rest on have pieces broken off. I ordered a new set but one side chipped off the first time I used them.



- 66557
by:

Haven't had a chance to tow our R-pod180 with our 2015 Jeep JKU Wrangler yet, but the installation went smoothly. Read and understand the directions first, and you shouldn't have any issues. You'll need a BIG torque wrench (or a BIG breaker bar) to properly tighten the hitch bolts. Take the time to set everything up according to the directions. Overall, this appears to be a quality product. I'll update the review after we've put a few hundred tow miles on it.



- 66557
by:

I've used this for about 20,000 miles with my 3000 lb camper trailer and found it to work well. I use an electric trailer jack to hook and unhook. I am able to pull at higher speeds, e.g. 70 MPH and with crosswinds. Made my pulling experience much more pleasant!



- 66557
by:

I'm very happy with this weight distribution/antisway hitch. Hopefully I will be able to find some new friction pads when they wear out. It was very noisy at first, but now that it is broken in the friction pads don't make so much noise.



- 66557
by:

Quick shipping. Clear directions. etrailer is a well organized seller. As with other Reese products, top quality. If your level trailer has a top-of-the-ball height of 13" or so, be aware that the weight distribution system may put the hitch pretty close to the road (perhaps a clearance of 6"). OK for us on the Interstates, but would be a problem if you are hauling over uneven terrain.



- 66557
by:

I installed the sway-bars on my trailer frame. I noticed the immediate difference as big tractor trailers pass me; no awkward feelings in the steering. Installation instructions were easy to follow.



- 66557
by:

Product itself is very good. Instructions and phone support are terrible if you are new to this stuff. Eventually figured it out through trial and error. Helps to have the right tools and a second set of hands. Works great!



- 66557
by:

Etrailer folks very helpful in getting right parts.



- 66557
by:

works great!!!love it



- 66557
by:

Awesome product variety and great communication! Will shop here again



- 66557
by:



- 66557
by:

Just as I expected.



- RP66559
by:

Review from a similar Steadi-Flex in Weight Distribution Hitch


I LOVE this hitch. Truly transformed my towing experience. I had a Reese distribution hitch before with separate sway bars, but I still had a ton of sway. I read a ton of reviews and this hitch seemed to meet my requirements. I have a F150 with max tow package and I pull a 27 foot travel trailer, about 7800 pounds max capacity. I had never pulled farther than about 100 miles prior to having this hitch, due to the white knuckle swaying. Now I have pulled my camper from Indiana to Panama City Beach, Florida and from Indiana to Gatlinburg, Tennessee. I have almost no sway 98% of the time. If it is still a really windy day, you might get a little, but on a normal day, no sway at all, no semis sucking me into them. Pulls straight as an arrow down the road. Reminds me of when I had a 5th wheel and how great it pulled. I would 100% buy this hitch again and highly recommend it.


Comments
One year later, still LOVE this hitch! I have put almost 4,000 miles on my camper since May 2020 and have been to Florida, Tennessee twice, etc. from Indiana. The hitch is holding up very well given the amount I use it, still love pulling with this hitch as I have almost no sway.
Brian L - 09/09/2021


- RP66559
by:

Review from a similar Steadi-Flex in Weight Distribution Hitch


really nice system. I use it to tow a Micro Minnie 2306BHS with a 2009 Nissan Frontier. very beefy and no issues with installation or setup. the only thing I'd say is that the bars wear into the steel where they move within the hitch carrier. I grease these points regularly, but seems like abnormal wear on the bars. Pads are holding up just fine; had to tighten them down after a year of use. overall, a good product and I'm satisfied with the shift to the Frontier's front suspension and overall sway and distribution control. Very easy to set up before our camping trips.


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Ask the Experts about this Reese Weight Distribution Hitch

  • How to Reduce Trailer Sway While Towing with a 2017 Jeep Wrangler Sport
    In order to help reduce trailer sway while towing with your 2017 Jeep Wrangler Sport, I recommend using a weight distribution system like the Reese Steadi-Flex Weight Distribution System part # 66557. The Steadi-Flex is going to not only help reduce trailer sway but it will also help to distribute tongue weight which improves braking and the overall handling of your tow vehicle. The only thing you will need to use this system is a hitch ball, part # 63017 or part # 63845. Please note...
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    Image 1 for
  • Recommended Weight Distribution With Sway Control on 2016 Toyota Highlander With 3000 Pound Trailer
    A weight distribution system is recommended anytime your trailer's weight is at least half of your tow vehicle's weight. So with your 2016 Toyota Highlander towing a 3000 pound trailer, I definitely recommend using weight distribution with sway control, instead of just sway control. To choose a system you need to use your 300 pounds of tongue weight combined with the amount of weight stored in the back of your Highlander behind the rear axle. You want to make sure you have a system...
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  • Adding a 7-Way Connector and Brake Controller on a 2015 Toyota Sienna with 4-Way Connector
    There isn't a 7-Way harness that will plug into your 2015 Toyota Sienna but you can install one and a brake controller by hardwiring them in. You will just need 2 items since your van already has a 4-Way trailer connector. You will need installation kit # ETBC7 and a brake controller. For a brake controller I recommend the P2 # 90885 because it is easy to set up and use and it is reliable. Since the ETBC7 installation is a hardwire no matter what vehicle it is on you can use the video...
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  • Weight Distribution and Brake Controller Recommendation for 2012 Chrysler Town and Country
    I have some information that will help, but I strongly recommend checking your owners manual to make sure you do not exceed the towing capacity of your 2012 Chrysler Town and Country. From my research, your Town and Country has a maximum towing capacity of 3,600 pounds when there are only 2 passengers, as listed in the owner's manual. The more passengers you have, the lower your maximum towing capacity will be. For your Town and Country, this maximum towing capacity does not increase with...
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  • Weight Distribution And Brake Controller Recommendation For 2008 Honda Odyssey
    After doing some research I found that the maximum cargo capacity for your 2008 Honda Odyssey is 1,322 lbs. This would include the combined weight of any passengers along with any other items carried in the van. The weigh distribution I recommend for you is the Reese Light Duty Weight Distribution System w Sway Control, part # 66557. This system can handle up to 4,000 lbs and tongue weight from 250 to 400 lbs. This system also features trunnion bars, an adjustable shank, and an anti-sway...
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  • Why is Weight Distribution Not Recommended for a 2005 Toyota Highlander
    The reason a weight distribution system cannot be used is because of the towing restrictions that Toyota has placed on the Highlander. There are a few factors that can cause this such as weak attachment points on the vehicle frame, towing capabilities of the vehicle and vehicle design. The purpose of a weight distribution system is to distribute the tongue weight of the trailer to the front vehicle axle and trailer axles. To do this, the weight distribution system creates an upward...
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  • Weight Distribution System Recommendation Airstream Bambi 16 ft Towed by 2014 Wrangler Unlimited
    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. Once you know your tongue weight...
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  • How does the Weight Distribution Affect Weight Put on the Ball and Receiver
    Using a weight distribution system will add more downward pressure on the hitch ball. A better way to think of this is that the weight distribution system is actually adding upward pressure to the trailer tongue. As the spring bars are tightened, they will pull downward on the trailer tongue and force the head of the weight distribution system upward. This is how the weight is distributed among the other axles. I have attached a photo showing how a weight distribution system applies pressure....
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    Image 1 for
  • Weight Distribution Recommendation for a 16 ft Casita
    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. Once you know your tongue weight...
    view full answer...
  • Installation Instructions for Reese Steadi-Flex Weight Distribution System 66557
    Since you provided the part number # 66557 of your Reese Steadi-Flex Weight Distribution System you can refer to and print the complete written instructions which I linked for you. These instructions also apply to the previous model number for this kit, 66041. A couple of videos are linked as well. The spring bar brackets simply clamp around your trailer's frame - no drilling required. These brackets are designed to be positioned 27" to 32" back from your ball coupler and they can fit...
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  • Which WD Hitch and Sway Control For Forest River Wildwood 26BH Trailer Towed By 2007 Nissan Armada
    Weight distribution systems should be used any time the trailer weighs more than 50 percent of the vehicle's weight. It is also recommended on trailers exceeding 26 feet that you have sway control on both sides or use dual cam sway control. I did some research and found that the dry weight of your Forest River Wildwood 26BH Trailer is approximately 4050 lbs when not loaded. When choosing a weight distribution system, the tongue weight of your trailer will determine the proper weight...
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  • Does the Head of the Reese Steadi-Flex Need Adjusted for Different Loads
    The head tilt adjustments on the Reese Steadi-Flex Weight Distribution System are used to apply different amounts of tension to the spring bars. The tension on the spring bars will need to be adjusted accordingly to the trailer's tongue weight. Since the tongue weight of the trailer will change when you add or subtract your motorcycle(s), you will need to adjust them each time to ensure you are receiving the best performance from the system. Please keep in mind that a weight distribution...
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  • Compatibility of Weight Distribution with a C-Channel Frame on Pop-Up Camper
    In general, if C-channel frame members face inward - meaning that the two open parts of the Cs face each other - then bolt-on chain hangers like # RP58305 can allow installation of a WD system. Standard clamp-on hangers like those in Reese system # 66557 will not work since they need a front and rear surface to clamp onto. Clamps like this could potentially damage the c-channel. It is sometimes necessary in order to use a WD system on a c-channel frame to have some new material welded...
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  • Correct Ball Size for Reese 66557 Weight Distribution Hitch
    The High Performance Reese Weight Distribution System, item # 66557, is designed to use a medium shank hitch ball with a length between 2-5/8 inches and 2-3/4 inches. I have listed 3 recommended balls below. Hitch Ball with 2-5/16 Inch Diameter and Medium Shank, 12,000 lbs GTW # 19286 Hitch Ball with 2 Inch Diameter and Medium Shank, 8,000 lbs GTW # A-90 Hitch Ball with 2-5/16 Inch Diameter and Medium Shank, 14,000 lbs GTW # 63836
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  • Can Reese Weight Distribution System Be Used On Pop-Up Camper With C-Channel Trailer Frame
    Based on the weight of your 2004 Toyota Sienna at approximately 5,700 lbs, and the weight of your 2004 StarCraft 2406 pop-up camper at about 1,800 lbs it may not be necessary to use a weight distribution system. Typically a weight distribution system is not needed unless the trailer weighs over 50 percent of the towing vehicle weight. You will want to check with the trailer manufacturer to see if a weight distribution system can be used with your camper. If the reason you are wanting...
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  • Availability of Light Duty Weight Distribution Systems
    We have very light duty weight distribution systems, but none of them will fit a 1-1/4 inch hitch since that hitch size isn't designed for the torque the WD systems can put on hitches. For a light duty weight distribution system that will fit a 2 inch hitch the Reese Light Duty part # 66557 is for tongue weights up to 400 lbs. If you need a higher rated system the part # RP66540 is for 200-600 lbs of tongue weight. For a 2 inch ball you would want part # A-90 and for a 2-5/16 inch...
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  • Weight Distribution and Equipment is needed for a 17 Foot Casita Behind a 2001 Ford F-150
    The need for a weight distribution and sway control system would depend on how much the trailer weighs loaded. With a trailer that small, I doubt you will need weight distribution as you are pulling with a full size pickup truck. The size of the ball will be stamped on the coupler, probably 2 inches. You will also need a ball mount. The best way to determine which size drop ball mount you need is to measure your hitch height and coupler height. Park the truck on level ground. Measure...
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  • How to Properly Setup the Reese Steadi-Flex Weight Distribution System
    I am not sure I understand what you are asking. The frame brackets on the Reese Steadi-Flex Weight Distribution System part # 66557 can be positioned between 25" - 32" back from center of coupler. This will then allow a minimum of 3" between the end of the friction pad and the end of the spring bar which will be needed to ensure that the spring bar does not fall out when turning. If you take a look at the attached install instructions this will then give you all of the info that you...
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  • Replacement Brake Pads for Reese Light Duty Weight Distribution System 66557
    Sounds like you are in need of replacement friction pads for your Reese Light Duty Weight Distribution System part # 66557. For that you would need the part # RP58497.
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  • How to Easily Install Both Spring Bars on the Reese 350 Mini-Lite Weight Distribution System
    Since you are following the instructions closely and have checked things out, it sounds as if you have a common issue that shows up when setting weight distribution spring bars. Once one side is attached the other side becomes very difficult to install because of the weight that the system is trying to distribute. You would most likely have the same problem if you installed the left hand bar first, you would then have trouble with the right hand spring bar. The fix for this situation...
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  • Weight Distribution with Sway Control To Pull Scamp 16 Foot Trailer w/ 1991 Jeep Cherokee
    The Reese Steadi-Flex Weight Distribution, part # 66557 that you were looking at would be an excellent option as long as the total tongue weight of your towing setup does not exceed 400 lbs (which it shouldn't). The total tongue weight includes the tongue weight of the trailer when it is loaded and ready to tow plus the weight of any cargo loaded in the back of your Jeep. This system does not include a hitch ball. For a 2 inch ball, you can use part # 63845. This system combines weight...
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  • Best Weight Distribution Kit for 2013 Ford Explorer Towing a 2500 lb Trailer
    The key to choosing the correct weight distribution system is knowing the tongue weight of your trailer when it is fully loaded and ready to tow. You should also keep in mind that anything loaded behind the rear axle of your 2013 Ford Explorer will contribute to the tongue weight as well. I would recommend choosing a system that has a tongue weight range that encompasses the tongue weight of your trailer with its heaviest load. The tongue weight of a trailer is typically calculated...
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  • Should Torsion Bars Be Able to Fall Off My Weight Distribution Head Assembly
    The trunnion bars on your weight distribution system should not fall out of the head assembly when driving down the road or during normal turns. When backing the trailer or turning very sharply the bar could come loose especially if the spring bars are not very tight. You should check the weight distribution head and trunnion head for damage and replace them if needed. You should also review your set-up instructions (see link) and make sure the attachment is correct. I would also recommend...
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  • Weight Distribution Recommendation for a 2014 Nissan Frontier Towing a Rockwood Camper
    Any time you are towing a trailer that weighs more than 50 percent of the weight of the tow vehicle we recommend a weight distribution system. ESPECIALLY if you are experiencing a light feeling in the front suspension and steering. In an emergency situation you may not be able to stop or turn if needed. 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...
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  • Availability of Light-Duty Weight Distribution System for Coleman/Fleetwood Campers
    The Reese Mini 350 Weight Distribution for Fleetwood/Coleman trailers you referred to, part # RP66041 has been discontinued and is no longer available. For trailers with lower tongue weights under 400 lbs, Reese recommends their Light Duty Weight Distribution System w/ Sway Control, part # 66557. The frame brackets would need to mount on the trailer frame between 25 and 32 inches rearward of the center of the trailer ball, as shown in the diagram I provided. If your trailer frame is...
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  • Replacement 1 Inch Square Spring Bars for Weight Distribution System with Sway Control
    If you are looking for weight distribution trunnion bars, we do have replacement options. Because you specified square bars that narrows down your system to an Equal-I-zer. We have the Replacement Spring Bar for Equal-i-zer Weight Distribution Systems - 400 lbs TW # EQ90-02-0499 which are 35-1/2" long x 1" wide. If you want the set, we have the Replacement Spring Bars for Equal-i-zer Weight Distribution Systems - Qty 2 - 400 lbs TW # EQ90-01-0499. Those are the only bars that...
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  • Best Weight Distribution for Trailer Weighing 3,000 lbs
    That's a pretty low tongue weight for most weight distribution systems, but the Reese Steadi-Flex kit part # 66557 would be the best option. Also, you should note that if you are experiencing sway the problem is a lack of tongue weight. If your tongue weight is on 190 lbs but the trailer weighs 3,000 lbs that's why you're getting sway. You need the tongue weight to be at least 300 lbs. For a hitch ball you then would want the part # 63845.
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  • Recommended Weight Distribution System for a 2015 K-Z Sportsmen Classic 18RBT
    For starters, the tongue weight figure of 336 lbs that you listed for your 2015 K-Z Sportsmen Classic 18RBT is the dry tongue weight. When the trailer is loaded it will likely be more. You also need to take into consideration any weight stored behind the rear axle of the tow vehicle. With that in mind, I suspect the total tongue weight of your towing setup will exceed the 400lb capacity of the Reese Steadi-Flex Weight Distribution System part # 66557 therefore, I recommend upgrading to...
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  • Weight Distribution for a Cargo Trailer with 200 Pounds Tongue Weight and a 2013 Ford Edge
    When determining tongue weight you also have to add the weight of anything loaded behind the rear axle of the Edge to the tongue weight of the trailer to get the total tongue weight. I recommend going with a system rated for 250 to 400 pounds like # 66557. This system also comes with friction sway control and a shank so you will just need to add a properly sized ball like # A-90 for a 2 inch or # 19286 for a 2-5/16 inch. I have also included a link to our FAQ article on weight distribution...
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  • Options to Help Sway and Bounce of a 6 x 10 Trailer Towed By a Chevrolet Tahoe With 3 Inch Lift
    There are a few things that you can do that will help with the sway and bounce on your 6 x 10 trailer when you are pulling it with your Chevrolet Tahoe. The first thing you can try to do is tow the trailer level. If the tongue on the trailer is high, then the trailer will not have as much stability if it were level. You may want to consider the Convert-A-Ball Cushioned Ball Mount with 8 inch drop, # AMSC8. This would lower the tongue of your trailer 2 inches from the 6 inch ball mount you...
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