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  1. Anti-Sway Bars
  2. Roadmaster
  3. Anti-Sway Bar
  4. Rear
  5. 1-1/8 Inch Diameter
  6. Mounting Hardware Included
THIS ITEM IS NOT A FIT FOR
2023 Toyota 4Runner
Roadmaster

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

Part Number: RM-1129-143
In Stock
$670.00
Retail:$745.86
You Save: $75.86
Anti-Sway Bars
Not Confirmed to Fit

2023 Toyota 4Runner

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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-1129-143 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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Roadmaster Anti-Sway Bars - RM-1129-143

  • Anti-Sway Bar
  • Rear
  • Roadmaster
  • 1-1/8 Inch Diameter
  • Mounting Hardware Included
  • No Drilling Required
  • Fixed End Link

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.



1129-143 Road Master Anti-Sway Bar - Rear

Installation Details RM-1129-143 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

2123 reviews
5 Stars
(1808)
4 Stars
(220)
3 Stars
(40)
2 Stars
(19)
1 Star
(36)
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.

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

  • 2015 Ram Promaster 1500 Van HiTop RV Ride Improvement Recommendation
    Best improvement we can help you with is a rear sway bar upgrade for your 2015 Ram Promaster RV with the Roadmaster sway bar # RM-1129-143. This will do the best job and improving the issues you mentioned. Since Ram built your vehicle without it having an RV body installed on it the rear sway bar just isn't adequate to provide you with a stable and smooth ride quality. That's why the Roadmaster bar will help a great deal as they designed this bar to fit your vehicle and be setup for and...
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  • How To Prevent Side to Side Sway When Trucks Pass On a 2019 Winnebago Travato 59K
    I do have an option for you but a steering stabilizer would not really be much help for the side to side rocking while being passed by larger vehicles. The most beneficial option we have to help reduce this would be to add/upgrade the rear sway bar, the Roadmaster Rear Anti-Sway Bar part # RM-1129-143. Generally speaking, an upgraded rear anti-sway bar is one of the most beneficial upgrades you can make to a motorhome as this is typically the area most are lacking from the factory. If...
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  • Rear Anti-Sway Bar Fitment On A 2022 Ram ProMaster Chassis With A Battery Box Near The Rear Axle
    The Roadmaster Rear Anti-Sway Bar # RM-1129-143 is going to mount just above the leaf springs on your ProMaster (pictured below in black and white). Judging by the pictures you've sent in the battery box doesn't interfere with where the sway bar will run across, but your sewer hose tube will be directly in the way and will need to be mounted elsewhere in order for the sway bar to fit. If you look at the opening in the frame just above the leaf spring you'll be able to see across and gauge...
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  • Rear Suspension Enhancement Product for Class C Motorhome to Decrease Sway and Increase Ride Height
    Assuming that your RV doesn't already have one, an anti-sway bar like # RM-1129-143 will keep your rear axle tied perpendicular to the frame which will be the most effective way to prevent the front end from getting squirrely on you. However, this option wouldn't affect your ride height. If you already have the OEM anti-sway bar, the addition of SuperSrings # SSA11 will offer pretty effective sway resistance, but would also raise your ride height by about an inch and would also help reduce...
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  • Best Way to Reduce Sway and Improve Ride of 2015 Winnebago Trend Motorhome
    Improving the ride quality of your 2015 Winnebago Trend motorhome is something we can help you with, though I should note that there is no way to upgrade the towing capacity, which is set by the manufacturer. I recommend adhering to the capacity to ensure you do not put undue stress on your Winnebago's chassis, transmission and suspension components. The best way to enhance the ride of your '15 Trend is with the Roadmaster Rear Anti-Sway Bar # RM-1129-143 because it is a vast improvement...
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  • Roadmaster Sway Bar RM-1129-143 Fit on Winnebago Travato 2014 Promaster 3500 Chassis
    The Roadmaster Rear Anti-Sway Bar for Vans # RM-1129-143 is a confirmed fit for both the 2014 Dodge ProMaster 3500 chassis and the 2015 model year Winnebago Travato it is built on. It will replace the OEM sway bar if one is present. We have not done an install on your same RV but I have linked a photo from the instructions, which are also included for you. Roadmaster does note in the instructions that if running changes were made by the RV manufacturer after this kit was designed, there...
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    Image 1 for
  • Does Roadmaster Rear Sway Bar for 2018 Ram ProMaster 3500 fit Dually
    The Roadmaster rear sway bar part # RM-1129-143 does fit your 2018 Dodge ProRam 3500 dually. If instead you had a 2018 Ram 3500 (no ProMaster) you'd need the rear sway bar part # RM-1129-144 which also fits dually models.
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  • Which Roadmaster Rear Anti-Sway Bar for Winnebago Solis on 2018 Class C Ram ProMaster 3500 Chassis
    Yes. The Roadmaster Rear Anti-Sway Bar # RM-1129-143 is a confirmed fit on the Class C Ram Promaster 3500 chassis and will be the correct part for your Winnebago Solis.
    view full answer...
  • Comparing a Steering Stabilizer and Anti-Sway Bar for a 2019 Winnebago Travato 59K
    I am not really sure what you mean by "unnerving truck traffic vortex" but the previous issue you mentioned was side to side sway from passing trucks and if that is the case then the best option you have to reduce this will be with a rear anti-sway bar, the Roadmaster Rear Anti-Sway Bar part # RM-1129-143 which is correct for your 2019 Winnebago Travato 59K. The rear anti-sway bar acts as a link between the frame and axle to minimize the effects of side to side rocking otherwise know as...
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  • Recommended Rear Anti-Sway Bar For A 2020 Ram ProMaster Van 2500
    The correct rear anti-sway bar for your 2020 Ram ProMaster Van 2500 is the Roadmaster Rear Anti-Sway Bar # RM-1129-143. This anti-sway bar is going to minimize side-to-side movement to improve the overall stability of your van and allow you to execute turns and quick maneuvers with confidence. It will also minimizes the effort required to keep your vehicle in line which will reduce driver fatigue and make long haul trips much more enjoyable.
    view full answer...
  • Recommended Anti-Sway Bar For A 2016 Ram ProMaster 1500
    For your 2016 Ram ProMaster 1500 with the 136" wheelbase I recommend the Roadmaster Rear Anti Sway Bar # RM-1129-143. At 1-1/8" thick, this sway bar is the thickest bar made for your vehicle. Basically the larger the bar, the more effective it will be. All of the Roadmaster sway bars use a black powder coat which will hold up nicely over time. The rust resistance is solid, but we do recommend periodically touching up any scratches with a black rust-resistant paint to maintain the coating....
    view full answer...
  • Correct Anti-Sway Bar for 2016 Pleasure Way Lexor
    The correct anti-sway option we currently offer for a 2016 Pleasure Way Lexor is the Roadmaster Rear Anti-Sway Bar part # RM-1129-143.The aftermarket suspension components you have now should not affect fit but you can scroll through the attached install instructions to confirm for yourself.
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Do you have a question about this Anti-Sway Bar?


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Sabrina W
Updated by:
Sabrina W
Employee Ronnie R
Written by:
Ronnie R
Employee John S
Video by:
John S
Employee Ethan H
Video by:
Ethan H
Employee Bradley B
Test Fit:
Bradley B
Employee Jesse B
Test Fit:
Jesse B

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