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  1. Anti-Sway Bars
  2. Roadmaster
  3. Anti-Sway Bar
  4. Rear
  5. 1-1/8 Inch Diameter
  6. Steel w Polyurethane Bushing
Roadmaster Rear Anti-Sway Bar - 1-1/8" Diameter
Roadmaster

Roadmaster Rear Anti-Sway Bar - 1-1/8" Diameter

Part Number: RM-1129-135
In Stock
$335.30
Retail:$446.76
You Save: $111.46
Anti-Sway Bars

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Minimize sway and driver fatigue by improving the stability and driveability of your vehicle. The bar on this sturdy, effective anti-sway system mounts to the rear axle and to the frame to balance weight transfer and reduce body roll. 1-800-940-8924 to order Roadmaster anti-sway bars part number RM-1129-135 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Rear Anti-Sway Bar - 1-1/8" Diameter. Anti-Sway Bars reviews from real customers.
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  • Reviews (1975)
  • Q & A (0)
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Roadmaster Anti-Sway Bars - RM-1129-135

  • Anti-Sway Bar
  • Roadmaster
  • Rear
  • 1-1/8 Inch Diameter
  • Steel w Polyurethane Bushing

Minimize sway and driver fatigue by improving the stability and driveability of your vehicle. The bar on this sturdy, effective anti-sway system mounts to the rear axle and to the frame to balance weight transfer and reduce body roll.


Features:

  • Minimizes side-to-side movement to improve overall stability of your vehicle
    • Lets you execute turns and quick maneuvers with confidence
    • Allows for a level ride, even on irregular surfaces
    • Reduces driver fatigue - minimizes effort required to keep your vehicle in line
  • Diminishes effects of crosswinds, passing motorists and shifting cargo
  • Designed to fit your vehicle and work in conjunction with its suspension system
    • Attaches to rear axle and to chassis - uses weight of axle to brace frame as it shifts in turns
    • Engineered to avoid interference with most popular aftermarket add-ons and accessories
  • Made with polyurethane bushings instead of the standard rubber variety for a longer-lasting system
    • Polyurethane is durable and resistant to damage caused by oil, gasoline and ozone
    • Less wear means less give in the system and better support
  • Constructed of thick 4140 chromoly steel for superior strength
  • Includes heavy-gauge mounting hardware, easy-to-follow instructions and bushing lubricant
  • Made in the USA


Specs:

  • Bar diameter: 1-1/8"
  • Limited Lifetime Warranty


Roadmaster Anti-Sway Bar Installed

Benefits of an Anti-Sway System

The Roadmaster anti-sway bar does for side-to-side movement what a good pair of shocks does for up-and-down motion. You will notice a marked improvement in your vehicle's stability as the bar works to balance weight transfer and reduce body roll. The anti-sway bar acts as a link between your vehicle's frame and its rear axle, using the axle as a brace to more effectively balance the shifting weight of your vehicle as you maneuver it. Lubricated bushings allow just enough pivot and rotation to compensate for the pressure placed on one side of your vehicle when it goes into sudden maneuvers, hits crosswinds or encounters shifting weights.


Roadmaster Anti-Sway Polyurethane Bushings

Superior Construction

The Roadmaster anti-sway bar is made of 4140 chromoly, a chromium and molybdenum steel alloy. This type of steel is considerably harder and stronger than the standard 1020 steel that is typically used in anti-sway applications. In addition, the larger diameter of the bar increases its torsional roll stiffness. The result is a bar that is not only stronger than the competition, but also nearly 30 percent better at resisting sway. The polyurethane bushings and grommets used at the attachment points are durable yet flexible, ensuring that the system is neither so rigid nor so malleable that it becomes ineffective.



1129-135 Road Master Anti-Sway Bar - Rear

Installation Details RM-1129-135 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Roadmaster Rear Anti-Sway Bar - 1-1/8" Diameter - RM-1129-135

Average Customer Rating:  4.8 out of 5 stars   (1975 Customer Reviews)

Minimize sway and driver fatigue by improving the stability and driveability of your vehicle. The bar on this sturdy, effective anti-sway system mounts to the rear axle and to the frame to balance weight transfer and reduce body roll.

by:
2016 Dodge Ram Pickup

This sway bar made a great improvement to the handling and ride of my 2016 RAM 1500 4x4 over the undersized sway bar (my opinion) that the factory installs. I recommend it for anyone no matter how you use your truck.



by:

Great simple installation. Looks great with my Banks Differential Cover. So much more heavy duty than stock. Truck rolls so smooth down the road, like it should. Installation about an hour, worst part was taking the old factory stuff off. Glad I did this improvement! Well worth the $.



by:
2018 Ram 1500

The sway bar assemble was very easy to assemble. The directions were clear and all the parts were included. I would rate this as a critically needed addition if you plan to carry a camper in the bed of your pickup.



by:

Quick easy bolt on, major improvement

Douglas

3/2/2024

This piece is freaking awesome. Dont waste your money on others. But the best product once, not after you have taken a different direction. Flat handling, great for towing, virtually eliminates sway. Could not be happier. Highly recommend



by:

Excellent product, great service from start to finish. This is the anti-sway bar the truck should have had from the factory.

Jerry B.

4/1/2023

It was great, never a complaint. I sold the truck about 6 months ago



by:

I have 35” tires and this bar really helps truck stay level in the corners even when loaded
Have urethane bushings in front too



by:
Roadmaster

The sway bar installed quickly and with little problem. It totally controls body roll on this truck. I would have given a higher score except the end links provided in the kit from Roadmaster failed within seven months, or about 6000 miles. I replaced them with Moog. All quiet now.



by:

Mounting hardware was incorrect for a 2019 Ram Limited with air leveling option. Left message with Roadmaster but no response.
Sway bar quality is excellent and mounted with OE hardware.



by:
2016 Ram 2500

Great customer service. Part fit perfect. Great communication

Kg

4/24/2023

Sorry to say did not do the job. Had to buy another brand. replaced with hellwig bigwig Its just sitting in the garage. Costs to much to return to sender….



by:

best aftermarket sway bar out there, very happy with the product, night and day difference feel on my truck.



by:
2018 Ram 1500

this sway bar kicks ass i am a niase ceertified , thats befoe ASE in 1974 it is a noticale better ride ,money well spent hang it out on an off ramp stays flat 4 stars on this upgrade



by:
Dodge Ram Pickup

This was very easy to install.. took about 30 mins by myself! Really was surprised in the difference it made in the handling of my ram 1500. Great purchase



by:

This review is for the customer service . The women that answer the phones and walked me through a return package process were the NICEST and most helpful I’ve ever had . They were so detailed and quick to answer the phone and provide me with the answers I needed
It’s nice to speak to good people when you have an issue with a product
I will continue to use them for my stuff



by:

Jason

7/1/2022

excellent!



by:

Just got it today 6-13-22, I would say you need to work on your delivery in a better time.



by:

Very good quality, bushing are heavy duty, except it to do well with a lot.



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2011 Ram 1500



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2011 Ram 1500



by:

I have a 2017 Ford F350 Super Duty SRW, and we haul a heavy truck camper (Lance 1055.) I have Stable Load Uppers and HD airbags, but wanted to add a sway bar to add that extra layer of control, even though my truck has handled the camper well over the last 2 years and 10,000 miles. My truck did not come with an OEM sway bar installed, so I needed this kit that included the End Links too.

The Roadmaster Rear Sway Bar and End Links sold on etrailer are top quality products. They are robust and well made, with quality hardware to match. The product deserves a 5-star, and even unloaded, my truck handling improved right after installation, with improved cornering and no real impact on ride quality in my opinion. I have not yet loaded up our camper or towed our boat, but I have no doubt this sway bar will substantially reduce sway and will improve control and handling when the camper is loaded.

So why 4 stars and not 5?

1. I researched this product and the installation in detail. I planned on installing it myself and expected to find plenty of detail on etrailer's site, or Roadmaster's site, or the internet. My most pressing question was about where to mount the end links, and the orientation of the sway bar arms since I wouldn't be using the OEM end links. That information was no where to be found on the etrailer site, Roadmaster's site, or in any installation manuals. For a product and supplier that has likely sold lots of these to Ford Super Duty owners, I was surprised to find how little info was out there. The installation video on the etrailer site was helpful, but did not include any information for the end links, as they had a 2015 Super Duty and used the OEM end links already installed. I contacted etrailer and they told me to contact Roadmaster for more info on where to locate the end links with this kit.

2. I contacted Roadmaster. They told me they had no instructions and that despite my truck already having the cut-outs for the OEM bracket that attaches the OEM end links to the frame, that none of those holes may work for me. So they suggested I connect the sway bar brackets to the axle first and then see where the arms would line up with the end links. The tech also suggested that it wasn't critical that the end links were perpendicular
to the frame, but that I should try install the end links to allow the arm of the sway bar to hand as close to parallel as possible. No bueno. When I installed this the 14" end links (center hole to center hole) didn't allow for the arms to hang parallel to the frame. And I don't think it matters as the orientation of my sway bar and the arms looks about like every video or picture I could find on the internet of this year/model truck and this sway bar kit. It seems to function fine.

3. Installing it was a bear, especially the way they instructed me to. And I had to make some modifications to fit my truck, as the sway bar arms were rubbing up against my airbag mounting brackets. I got it installed, but the thin instructions turned what should have been a 60 minute job into 2 1/2 hours. A bit frustrating.

All in all, this will do the job intended and will provide me with peace of mind next time we load our camper. I am a bit frustrated that there were zero installation instructions specific to my year/make/model of truck given it did not have an OEM sway bar and the end links had to be installed with a bit of guesswork. You will also note in my pictures that I had to mount the end links to the sway bar arms differently on each side to make the bar fit around my air bag mounts.



by:

This product arrived on time, and is as described in company literature. I have installed the sway bars and the sumo springs on my 2019 Ford E3 26 foot Thor motorhome. Installation is fairly straightforward. Having said that, I am a retired farmer and I am quite familiar with this type of work. Having the proper tools makes the job go much quicker and easier. Installation of the front sway bar took a little under an hour. The rear sway bar is a bit more complicated to install, but he can be easily accomplished by someone of average mechanical skills, equipped with the proper tools. I strongly recommend removing the rear wheels to facilitate installation of the springs and the sway bar. I have not driven my motorhome yet, but will be taking an extended trip in March. I am looking forward to an improved ride.



by:

Fairly easy install. Drilling the hole in the frame was decent started with a 17/64 pilot hole then the 17/32 final hole. Take your time and let the drill do the work.
Do be aware of the hole placement on the drivers side as there are brake lines and wiring there.


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See what our Experts say about this Roadmaster Anti-Sway Bars

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    Yes, The Timbren Rear Suspension Enhancement System # TDR2500D will fit your 2022 RAM 2500 with factory air suspension. The Roadmaster Sway Bar # RM-1129-135 will not. The Timbrens will give you up to an additional 8,600 pounds of suspension support. These springs act like shock absorbers, taking the brunt of bumps and rough roads. Using these springs will not exceed the vehicle's weight-carrying capacity. I attached an installation video link below.
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  • How to Reduce Sway on a 2016 Ram 2500 with a Lance 820 Truck Camper
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    The Roadmaster Rear Anti-Sway Bar # RM-1129-135 will replace your factory sway bar on your 2017 Ram 2500 with a stronger bar and polyurethane bushings. If your only issue is sway this is what you need to help reduce sway. If you are also dealing with rear suspension sag the SumoSprings Rebel Custom Helper Springs # SS27GR will reduce sag and provide additional stability to reduce sway. These can be used with the sway bar listed above for increased sway reduction if you do not feel there...
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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee John S
Video Edited:
John S
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Sabrina W
Updated by:
Sabrina W
Employee Jonathan Y
Video by:
Jonathan Y
Employee David F
Installed by:
David F
Employee Andy C
Installed by:
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