Reese Steadi-Flex Weight Distribution System w/ Sway Control - Trunnion - 6K GTW, 600 TW
(228 reviews)
Price: $669.51
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Reese Steadi-Flex Weight Distribution System w/ Sway Control - Trunnion - 6K GTW, 600 TW
Part Number: RP66558
In Stock
$669.51
Retail:$1,013.95
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- All Info
- Reviews (228)
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Reese Weight Distribution Hitch - RP66558
- 500 lbs
- Fits 2 Inch Hitch
- WD With Sway Control
- Allows Backing Up
- Reese
- Includes Shank
- Electric Brake Compatible
- Surge Brake Compatible
- Some Sway
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
- Brackets keep spring bars in place for a rigid system that holds your trailer in line
- 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: 400 lbs - 600 lbs
- Gross towing weight: 6,000 lbs
- Fits: 2" x 2" trailer hitch receivers rated for use with weight distribution systems
- Maximum trailer frame height: 6"
- 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: 7-1/2"
- Maximum rise: 7-5/8"
- Maximum drop: 2-7/8"
- Overall height: 8-3/4"
- Holes are spaced 1-1/4" apart on center
- Limited lifetime warranty
| Included w/ System | Required - Sold Separately | Optional Add-Ons |
|---|---|---|
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| n/a |
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.
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
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
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
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
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.
66558 Reese Steady Flex Light Duty Weight Distribution System with Sway Control - 6,000 lbs GTW, 600 lbs TW
Installation Details
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Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
- Product did not meet expectations
- Arrived Damaged
Customer Reviews
Reese Steadi-Flex Weight Distribution System w/ Sway Control - Trunnion - 6K GTW, 600 TW - RP66558
Average Customer Rating: 4.7 out of 5 stars (228 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.by: John04/30/2018
I've towed a few thousand miles with this hitch on my Astro Van (properly equipped) pulling a 15ft open deck car trailer(~4000lb loaded with 450lb TW). I have been very happy with this purchase. The anti-sway system on the WDH works very well even with my smallish tow vehicle. No issues when towing in crummy weather with strong winds and driving rain, the hitch handled wonderfully. The sway control is fairly quiet when making sharp turns or backing up.
Great product!
by: Preston 03/30/2023
This thing was awesome. No sway from high bridges,and semi trucks. Went over some very high tall bridges no sway there either. Track true on my Tacoma and Rockwood Roo 19. Once we got it dailed in. Distributed weight perfect front was spot one.
by: Rob09/28/2015
Working well for my Boat Trailer with surge brakes. I'm happy I went with this 600/6000 LBS version instead of maxing out the 400/4000 LBS version on my 380/3700 LBS rig. I'm now towing legal again since down-sizing my tow vehicle to a 2015 Ford Flex, AWD, V6 EcoBoost, Even with the factory tow package the Flex is only rated for 200/2000 without WDS, but 450/4500 with WDS. I did a couple trips to my local lake before WDS (30 mile round trip via 45 MPH roads) and the Flex felt safe for that distance/speed, but it had a lot more trailer jolt and was not quite as stable as my old GMC Envoy XL. The WDS has improved the towing stability and ride well beyond my expectations, and is now even better then towing was with buddy's full-size Pickup. I did have to use a Pole-Tongue Adapter (RP58393), and customize the adapter mounting to my trailer, but I can already tell this added hassle and expense will be well worth it for the long-haul trips I do a few times a year.
by: Robert 04/02/2024
Works great (Jeep Wrangler pulling 3500LB load), as with all friction based WD hitches there is some squeaking when turning corners but that is as expected. Deliver and price was good. Would by again.
by: Lorie09/22/2023
We bought the 6k GTW- 600 TW which is slightly more than we needed but it was a fairly easy installation. The truck pulls the camper so much smoother and safer my husband even let me drive on the highway!
by: David G05/15/2019
Very happy with hitch system. Has made a difference in towing our camper. Easy to install, and easy to use for each trip.
by: Todd03/07/2016
Works great. I am able to tow a 3,500 lb travel trailer with a Jeep Wrangler Rubicon. Jeep sits level. No sway from wind or emergency lane changes. Works fine on mild off road trails. Hook up only takes about 8 minutes longer once the process is well known.
by: richardd l06/08/2019
Still can't figure out how to level the trailer! To undue the spring bars I need to raise the trailer and truck very high! Deciding whether I should just tow on the ball and not use this setup. Not very happy
Mike L.
6/10/2019
Wed be happy to help you get that figured out. Take a look at the set-up video Ive linked for you. If you still have questions after that, please let us know.
by: Scot 06/06/2021
This has been a lifesaver for our Jeep Cherokee (non-Grand) towing a 4k# trailer. Prior to this, towing felt sketchy above 50 and downright unsafe above 70. With this, things feel secure at any speed.
Just remember to take the bars off if you're doing any sort of off-roading.
I really only have 2 gripes, hence the 4-star review:
1. The pins connecting the trunnions tend to spin a bit while driving, which can result in the cotter pin getting mangled. I had to buy a bolt cutter to remove one once and now carry them and spare cotter pins as a result. I'm very careful to always align the pins with the bars but it doesn't stay that way. It seems they could improve the design.
2. The pins tend to wear with sharp edges, making inserting and removing them very difficulty. I've already had to file the edges down once and expect to have to do it every season or so.
Both of these are very manageable, though, and are a small price to pay for the increased safety and comfort while towing.
by: Jim M07/06/2019
Was used to tow a 3500lb. travel trailer with YJ Jeep with a 5.3ls engine conversion. Set bars to a very light setting. Trailer tows very nicely. Great product. The braking system for anti-sway is one of best on the market. Replaceable brake pads are the way to go, just like in tow vehicle.
by: Charles12/27/2020
WOW! I have a Lance 1995 24 foot trailer that was balanced but swayed above 55 mph. I researched the solution on this site and based on everything suggested I purchased the Reese Steadi-Flex. I formerly had a Husky round bar unit that did not address the issue. The order had a minor delay so I was contacted by etrailer. They gave me options but assured me what I bought was the best. So I waited. Glad I did. I cannot believe the difference. There is absolutely no sway whatsoever with this unit. After a long drive on Hwy 99 I found the speed had crept up to 70! Oops. Still in perfect control. Had I done this before I would have wound up in a ditch!
This thing is literally a life saver and I am no longer worried when I have to tow with it. Super cudos for staff at etrailer. You have my business from here on out. Also I want to comment on the complaint about the bars being heavy. Not so. I am sixty eight and recently damaged both thumbs so my lifting is limited. (btw, old guys SHOULD NOT use a jackhammer!) The old round bar Husky was heavy, these straight steel bars are not. Much easier to set this unit up. I will never drive with my trailer again without the Steadi-Flex. Thanks etrailer!
by: Chuck03/24/2018
Recommendation by etrailer was perfect.
Easy to install
Trailer pulls with no sway, wandering
Or porpoising.
Take the recommendation and go with it.
They know what they are doing.
Chuck C.
3/25/2019
Great
by: Greg03/09/2016
Hitch works great. Sometimes use it without sway bars (for short trips), but noticeably less sway and bobbing with sway bars attached. Used with Ram 1500 and Lance 1995 trailer.
After a few trips, one of the friction pads cracked and separated. Etrailer was very helpful getting it replaced quickly. No problems in the subsequent trips.
by: Robert 09/12/2022
I really like the Reese Stedi-Flex system. I use it with a 2.0" ball on a Tundra when towing a small 3500lb travel trailer. I don't need it for load leveling, but it keeps the trailer in control on the highway. I have a heavier duty Reese system for towing my 8,000lb sail boat trailer (where I do need leveling) and it also works very well for anti sway
by: Vance 05/02/2023
Was easy enough to install. If I ran into any snags, it was because of me, not the product. E- Trailer provides excellent products and amazing service. Best value for the money.
by: Roland P04/03/2019
I just bought a new trailer that is 7 feet longer than my last and heavier and I now have a truck instead of an SUV so I needed to get a new weight distribution hinge with sway control. etrailer had all the best brands at the best price and delivery was fast. Unfortunately that's all I can comment on so far. I'm not picking up the new trailer till mid April, so I can't comment on how well it works or show pictures. I'll update later.
by: William04/18/2018
I searched many different companys on line. I kept going back to Etrailer for many many questions regarding various other hitches and weight issues. They were extremely helpful with all my questions and very patient. Plus once I placed the order I received my order two days early.
They are the best in customer service and price. I would differently use them again.
by: William04/18/2018
I searched many different companys on line. I kept going back to Etrailer for many many questions regarding various other hitches and weight issues. They were extremely helpful with all my questions and very patient. Plus once I placed the order I received my order two days early.
They are the best in customer service and price. I would differently use them again.
by: Michael M.06/09/2019
Very happy with my purchase, etrailer is a fabulous company to deal with , great installation videos for this item as with all the products I’ve purchased from them over the past few years.
by: Tim C.04/18/2018
Excellent customer service and helpful installation video online. I was disappointed in the quality of the product (not etrailer's fault) due to poorly tapped holes and paint in the holes that made assembly slightly more difficult than should have been required. Just be aware of this so you don't cross thread any bolts and strip out the threads!
by: Happy Customer04/19/2021
Very happy with product. Was fairly easy to install after watching video. I use mostly for long distance interstate driving. It makes the truck and trailer feel like one unit.
by: Henry05/14/2018
quick ship had it in three days expecting hitch to work as intended.
by: Bill C05/11/2017
Great product, easy install. Fast shipping, thanks
by: Bruce03/16/2018
Delivered very fast. Great price and great customer service. Will definitely be buying again
by: Greg04/28/2018
Very helpful, thanks so much!
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Show More Reviews
See what our Experts say about this Reese Weight Distribution Hitch
- Would Reese Weight Distribution RP66558 Work w 2015 Dodge Durango Trailer 500 lbs TWFor the tongue weight you listed of 500 lbs the Pro Series system part # RP66558 would be rated properly. You should note that you need to determine tongue weight when the trailer is fully loaded plus consider the weight of any cargo behind the rear axle of the tow vehicle as tongue weight.
view full answer... - Weight Distribution System Recommendation for a Travel Trailer that Weighs 3,750 lbs DryThe 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. If your trailer loaded and ready...
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view full answer... - Weight of Reese Steadi-Flex Weight Distribution RP66558 & Does it Get Added to Tongue WeightGood questions, and as far as the weight, I checked with the manufacturer and the total weight is 73 lbs for the Steadi-Flex you asked about, which is the following part number: - Reese Steadi-Flex Weight Distribution System w/ Sway Control # RP66558 The Steadi-Flex # RP66558 does not count as tongue weight as it is essentially part of the hitch, but it does count against total payload, which you'll want to keep in mind. This is a very smart choice for a weight distribution hitch because...
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view full answer... - Which Reese Steadi Flex for 2022 20FB AirStream CaravelFor a loaded tongue weight of 565 lb the Reese Steadi Flex kit part # RP66558 would be properly rated and would work great.
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view full answer... - Recommended Weight Distribution System with Sway Control for a 3,500 Lb Trailer with 3" Tall FrameThe weight distribution system I recommend with integrated sway control that will fit a 3" tall trailer frame is the Reese Steadi-Flex Weight Distribution System part # RP66558 which is a bolt-on option. In order to use this system you will also need the 2" Hitch Ball part # 63845.
view full answer... - What Part of Reese Steadi-Flex Weight Distribution RP66558 Should be LubricatedThank you for your purchase from etrailer of the Reese Steadi-Flex Weight Distribution # RP66558. I took a look at the instructions and they say you just need to lightly lubricate the hitch ball before each use.
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view full answer... - Spring Bars for Reese Steadi-Flex Weight Distribution SystemThere is a wide range of options for the Reese Steadi-Flex Weight Distribution systems. They have weight ratings that start at 250 lbs and go up to 1,200 lbs. The spring bars for the Reese Steadi-Flex Weight Distribution System w/ Sway Control - Trunnion item # RP66560 you referenced have a range from 800 lbs - 1200 lbs. The Reese Steadi-Flex Weight Distribution System w/ Sway Control - Trunnion - 10K GTW, 1K TW item # RP66559 has a range of 500 lbs - 1,000 lbs. The Reese Steadi-Flex...
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view full answer... - Do Adjustments Need to be Made to Weight Distribution System if Truck Rides Too High in the FrontIf you are using a weight distribution system like the Reese Steadi-Flex, part # RP66558, and the front end of your truck is too high, it sounds like you may be using a system that isn't rated high enough for the tongue weight of your trailer. I recommend that you start by determining the tongue weight of your trailer (I am including an article on this) and compare this to the weight rating of the system. If the tongue weight exceeds the rating, I would try removing some of your cargo...
view full answer... - Will Weight Distribution Work to Tow an Airstream Trailer with a 2014 Ford Explorer SportYou can use a weight distribution hitch with your 2014 Ford Explorer Sport. Page 282 of your owners manual should have information regarding the use of a weight distribution hitch. The towing capacity of 5,000 lbs and tongue weight of 500 lbs would be the same maximum capacities when using a weight distribution hitch. Based on the GVWR and tongue weight of your Airstream, you should have no problem using a weight distribution system with your Explorer. If you are still in the market...
view full answer... - Reese Pole Tongue Adapter Compatibility With Reese Steadi-Flex Weight Distribution SystemThe Reese Pole-Tongue Adapter for Weight Distribution Systems - 14,000 lbs GTW, 1,400 lbs TW # RP58393 requires positioning on trailer tongue approximately 29 inches back from hitch ball. The Reese Steadi-Flex Weight Distribution System w/ Sway Control # RP66558 requires bracket positioning 25-32 inches back from center of coupler, so they will be compatible. You will need a hitch ball with your weight distribution system. I recommend # 63845 for a 2 inch ball or # 63847 for a 2-5/16...
view full answer... - How to Add Sway Control to a Boat Trailer that has Surge BrakesTypically you will experience sway from your trailer when the trailer isn't loaded properly. It is encouraging that your engine is mainly over the axle, but it would be best to verify that the tongue weight (TW) of your trailer is 10-15% of the loaded weight of your trailer. A properly loaded trailer is your first step into reducing trailer sway. Since most boat trailers have a pole tongue you will need to use a pole-tongue adapter like part # RP58393 and a weight distribution (WD) system...
view full answer...
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Preston
3/31/2024
Used this product for about 1800 miles. I couldnt be happier. The sway control is great. Ive been in CBBT, Hampton Rd Tunnel, tall brides,and just roads. It has performed great. My one complaint is I tried to buy pads from Etrialer for this hitch and could not. I think I actually got a spare set from reese.