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

Roadmaster Rear Anti-Sway Bar

Item # RM-1129-124
Retail:$760.33
Our Price: $648.37
You Save: $111.96
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-1129-124 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Rear Anti-Sway Bar. Anti-Sway Bars reviews from real customers.
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Roadmaster Anti-Sway Bars - RM-1129-124

  • Anti-Sway Bar
  • Roadmaster
  • Rear
  • 1-1/4 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
  • Works with front anti-sway bar (sold separately) for absolute stability - available on certain applications only
  • Made in the USA


Specs:

  • Bar diameter: 1-1/4"
  • 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.



1129-124 Road Master Anti-Sway Bar - Rear

Replaces 1129-123

Installation Details RM-1129-124 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Roadmaster Rear Anti-Sway Bar - RM-1129-124

Average Customer Rating:  4.8 out of 5 stars   (1364 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:
2004 Dodge Ram Pickup

Relatively easy installation on my 2004 Ram 3500. It would have been easier if I had removed the spare tire. I only noted a few minor issues. The instructions say to mount the U brackets to the rear two holes in the shock mounts. However, on this truck the shocks mount one in front and one in rear. Therefore, the passenger side mounts in the rear two holes, but the driver side mounts in the front two holes. Otherwise all went well.


Comments
Great
Dale C - 12/18/2021


by:
2016 Ram 3500

This is beefy and fits like a glove (OJ'S I BELIEVE). The only thing that made the whole installation a .... nightmare was the complete lack of instructions and/or video with in-depth visuals. This is definitely a 2 person install, if nothing else to hand stackable hardware while you're holding everything in place. Once installed and road tested, I'm a believer, does exactly what it is designed to accomplish. Also, item showed in stock when ordered but still took well over a week to ship with no explanation??


Comments
Sold truck 2 months ago. Worked great with a Host Mammoth on its back
Craig - 07/31/2022


by:

This sway bar is a game changer was going to get rid of camper until I put the sway bar in works great! Best money I spent!




by:

Installation was as expected.
I have
not driven my truck with the camper on it or pulled my race car trailer.
Around the block empty the truck felt stiffer.




by:
2016 Ram 3500

When attempting to install this I quickly realized that the arms were way too short. Called etrailer and was informed it was the right product for my truck. Called Roadmaster and after several back and forth calls it was determined that it would not work on my truck because it had after market airbags. Was never told that would be a problem. So now I’m sending it back and paying for a new box because the original was too damaged plus having to pay return shipping




by:

Like the online videos too




by:
2006 Dodge Ram Pickup

I recently purchased and installed a rear sway bar for my 2006 Dodge Ram 2500 4x4 diesel truck.. I searched through several models of bars but wanted one that was similar to the factory bar I had on my 2000 Dodge 2500 4x4. This Roadmaster bar is of excellent quality and bolts to the bottom brackets of the rear differential so the installation is very solid on the axle. The vertical links mount to 2 very sturdy brackets that attach to the frame rails. All the hardware is marked on the heads as graded hardware. The bars, links, urethane bushings and all hardware are excellent quality. This installation made an immediate improvement in my trucks roll stiffness. The factory does not make a rear roll bar for these year trucks for some reason. My previous Dodge had the camper package and came with a nice rear sway bar. This etrailer Roadmaster setup is a good option for anyone looking for something like a factory bar. The folks at etrailer were very knowledgable about their product and very helpful making sure I got the unit I needed. I will definitely recommend them and their products as well as use them in the future for my truck needs.




by:
2005 Dodge Ram Pickup

Installed on 05 ram dually for slide in truck camper hauling. Huge improvement with sway, truck handles much better. East to install. Works as advertised and components and elastic components beefier than the well touted competitive product.
Travis S


Comments
Great... Works as advertised
Travis S - 03/15/2018


by:
2010 Dodge Ram Pickup

Very happy with the sway bar. Make sure you have the frame brackets tight to the frame.


Comments
Still works well, does have clunk when you hit a bump. Talked with roadmaster and we could not identify cause. Make sure brackets are tight to frame, they will move.
Larry M - 03/12/2018


by:

Installing was easy and straight forward. I think it makes a difference in my towing and non towing driving. I like it very much




by:

Easy install!




by:

Everything fit worked as well has factory no complaints whatsoever




by:




by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


--Etralier & Roadmaster Anti-Sway-Bar Review--

I
do not do product reviews--but am doing so here simply to express the AWESOME Customer Service, Articles, & Products at etrailer.com!

I have an old 1988 7.3 IDI (N/A Diesel) E350 transporter van (extended length with hightop) that I have spent a decade working on and just opted for front and rear Roadmaster anti-sway-bars.

I am so grateful I ordered them from etrailer! etrailer made the purchase process INCREDIBLE & the anti-sway-bars installed easily in an evening.

CUSTOMER SERVICE:

Via a private browser I inadvertently placed my order & received an error.

Hitting the "Live Chat" & within moments August from etrailer.com had answered saying my order was not in the system & it was safe to redo the order (which I did in a regular browser).

Just hours after placing the order (7 PM Pacific Time) I realized there was a third Roadmaster option (1 5/8" thick rear anti-sway-bar) I did not notice (see below for details of Roadmaster fit for the 1975-1991 Ford van, as I have worked out).

I again hit "Live Chat", at 7 PM!, & Matthew from etrailer within moments talked with a tech and confirmed I had (thankfully) ordered the correct part.

The next morning I awoke to an email from George at etrailer.com saying my order had been shipped and would arrive on Tuesday (~5 days across the U.S.).

The tracking link showed a map tracking the order as well who processed the order at etrailer.com (George), who gathered the order at etrailer.com (Cody), and who packaged (shipped) the order at etrailer.com (Michael)--with pics of the person.

The order arrived well packaged--from the factory I think--with only 2 cosmetic punctures (see pics if concerned--but for heavy (~36 lbs each) & awkward items across the U.S.--no complaints here).

Upon arrival, I received (what I assume is automated--but still) an email from Carol to follow up on the order.

Incredible!

ARTICLES:

Since then I have scanned some of etrailer.com's articles & they seem honest & insight-fully written (like the article discussing the cost/benefit, return on investment, of solar power*).

PRODUCTS:

There are also rather specialty products on etrailer I have wondered about but for lack of time have never researched (nor stumbled upon elsewhere). For example Kat's Heater Ether Start Fluid Injection System.**

Plus, from what I have gathered, they have product experts on-hand, with their names & pictures.

Do you know anywhere else with such customer service?!?!?

ROADMASTER ANTI-SWAY-BAR FIT
(for the 1975 - 1991 Ford Econoline van):

For fit, what I've worked out using the Roadmaster Fitmaster website*** is there are 5 variants for the 1975-1991 REAR anti-sway-bar & one item for the front (but do double check me!):

Part #1139-108 with a 1 3/8" anti-sway-bar: not for diesel
Part #1139-117 with a 1 1/2" anti-sway-bar: recommended for diesel E350 (what I contacted customer support over)
Part #1139-119 / RM83ZR with a 1 5/8" anti-sway-bar
Part #1139-108 with 1 3/8" anti-sway-bar: FOR auto-chain vehicles.
Part #1139-198 with a 1 1/2" anti-sway-bar: FOR auto-chain vehicle.

Part #1139-100 is 1 3/8" & is the only anti-sway-bar for the FRONT (I understand).

Unfortunately I have yet to test drive as I must tie several things down first & wanted to get this review out ASAP. But all reviews I have read say these anti-sway-bars are night and day difference.

SUMMARY:

In sum, there in no other company in the U.S, I have ordered from in over a decade that has done such a STELLAR job as etrader.com.

(And fixing/modernizing a 30 year old diesel van has required me ordering MASSIVE parts).

If etrailer is not one of the best companies in America, I do not know who is.

Order from etrailer with complete confidence.

THANK YOU so much etrailer!

Keep up the INCOMPREHENSIBLE job!

May you all be blessed,




by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


etrailer & Roadmaster Anti-Sway-Bar Review--

I
do not do product reviews--but am doing so here simply to express the AWESOME Customer Service, Articles, & Products at etrailer!

I have an old 1988 7.3 IDI (N/A Diesel) E350 transporter van (extended length with hightop) that I have spent a decade working on and just opted for front and rear Roadmaster anti-sway-bars.

I am so grateful I ordered them from etrailer! etrailer made the purchase process INCREDIBLE & the anti-sway-bars installed easily in an evening.

CUSTOMER SERVICE:

Via a private browser I inadvertently placed my order & received an error.

Hitting the "Live Chat" & within moments August from etrailer had answered saying my order was not in the system & it was safe to redo the order (which I did in a regular browser).

Just hours after placing the order (7 PM Pacific Time) I realized there was a third Roadmaster option (1 5/8" thick rear anti-sway-bar) I did not notice (see below for details of Roadmaster fit for the 1975-1991 Ford van, as I have worked out).

I again hit "Live Chat", at 7 PM!, & Matthew from etrailer within moments talked with a tech and confirmed I had (thankfully) ordered the correct part.

The next morning I awoke to an email from George at etrailer.com saying my order had been shipped and would arrive on Tuesday (~5 days across the U.S.).

The tracking link showed a map tracking the order as well who processed the order at etrailer (George), who gathered the order at etrailer.com (Cody), and who packaged (shipped) the order at etrailer (Michael)--with pics of the person.

The order arrived well packaged--from the factory I think--with only 2 cosmetic punctures (see pics if concerned--but for heavy (~36 lbs each) & awkward items across the U.S.--no complaints here).

Upon arrival, I received (what I assume is automated--but still) an email from Carol to follow up on the order.

Incredible!

ARTICLES:

Since then I have scanned some of etrailer.com's articles & they seem honest & insight-fully written (like the article discussing the cost/benefit, return on investment, of solar power*).

PRODUCTS:

There are also rather specialty products on etrailer I have wondered about but for lack of time have never researched (nor stumbled upon elsewhere). For example Kat's Heater Ether Start Fluid Injection System.**

Plus, from what I have gathered, they have product experts on-hand, with their names & pictures.

Do you know anywhere else with such customer service?!?!?

ROADMASTER ANTI-SWAY-BAR FIT
(for the 1975 - 1991 Ford Econoline van):

For fit, what I've worked out using the Roadmaster Fitmaster website*** is there are 5 variants for the 1975-1991 REAR anti-sway-bar & one item for the front (but do double check me!):

Part #1139-108 with a 1 3/8" anti-sway-bar: not for diesel
Part #1139-117 with a 1 1/2" anti-sway-bar: recommended for diesel E350 (what I contacted customer support over)
Part #1139-119 / RM83ZR with a 1 5/8" anti-sway-bar
Part #1139-108 with 1 3/8" anti-sway-bar: FOR auto-chain vehicles.
Part #1139-198 with a 1 1/2" anti-sway-bar: FOR auto-chain vehicle.

Part #1139-100 is 1 3/8" & is the only anti-sway-bar for the FRONT (I understand).

Unfortunately I have yet to test drive as I must tie several things down first & wanted to get this review out ASAP. But all reviews I have read say these anti-sway-bars are night and day difference.

SUMMARY:

In sum, there in no other company in the U.S, I have ordered from in over a decade that has done such a STELLAR job as etrailer.

(And fixing/modernizing a 30 year old diesel van has required me ordering MASSIVE parts).

If etrailer is not one of the best companies in America, I do not know who is.

Order from etrailer.com with complete confidence.

THANK YOU so much etrailer.com!

Keep up the INCOMPREHENSIBLE job!

May you all be blessed,




by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


The Roadmaster Anti-Sway Bar is of excellent quality. All of the parts are heavy duty and fit exactly the way they should. I have a 2003 Fleetwood on a Workhorse W22 chassis and considering the age all of the factory bolts and nuts came off without any issues. Installation was easy following the printed instructions and the online video. I really recommend this product.




by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


Very nice High Quality Anti-Sway Bar!
I
picked up the end links and fabricated the frame mounts for the end links.
Turned out great and made a very significant improvement in the ride and stability.




by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


Very straightforward installation and all the parts were of high quality. This is a substantial, solid sway bar. My RV feels a lot more solid on the road in curves etc. Very satisfied with the product.




by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


I purchased the rear anti sway bar and end link kit because my 2017 Ford F350 single SRW did not come with a rear sway bar from the factory. The sway bar came with instructions and fits the truck well. The end link kit did not come with instructions, so I had to find an existing hole in each side of the frame to mount them to. Although there is a larger hole in the frame above the hole that I was mounting the end links through, there is not enough room to put a wrench on the nut inside the frame. So I welded the nut to a 1"x2"x3/16" steel plate. Then I was able to slip the nut/plate assembly into the frame and tighten the bolt. Additionally, there are no bolt torque specs, so I torqued the 1/2" bolts to 80 ft-lbs, and the 3/8" bolts to 60 ft-lbs. I have to hope that is sufficient. Of course, I shouldn't have to hope. That information should be included in instructions, and the nut/steel plate assemblies (or some other option) should be included in the end link kit. Although the finished product appears to be good quality, I gave it 3 stars due to the incomplete end link kit.


Comments
I will email you the instructions we have on this.
-- Etrailer Expert Sierra K - 01/18/2022
The Roadmaster anti-sway bar has been a tremendous addition to my truck. I carry a 2,500 lb. Lance truck camper in the bed of the truck. Although the truck can easily accommodate the weight of the camper, it is top heavy at a loaded height of 11 to the top of the AC unit. Prior to installing the anti-sway bar, the truck swayed significantly. The anti-sway bar has eliminated excessive sway. On center, the truck will still sway, but as I round a curve, the truck will sway a little bit and then just stop swaying as the anti-sway bar is loaded. It gives me much greater confidence driving around curves at speed. I can typically maintain the same speed as most traffic around me. I highly recommend the Roadmaster anti-sway bar for anyone carrying a truck camper.
Gary - 01/17/2023


by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


I installed the front and rear Anti-sway bars with the steering shock.
I am 100% satisfied with the outcome and handling of my RV while driving down the road.
I would highly recommend the installation of these items on any RV


Comments
You just cant go wrong installing these kits to you RV. Next thing i looking to install is the air suspension kit and new shocks.
marcus - 09/21/2021


by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


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:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


OH My! If you are thinking about getting one for your P32 wide body. Please don’t hesitate. It REALLY Works. Take the white knuckle effect out of driving. EASY installation! Easy Ordering from etrailer. Roger helped me get through the buying process and shipped to my house in 2 days! Thank You!!




by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


Was an fairly easy install with two people , has held up well so far . Helped stop sway with my top heavy truck camper load. At the time it was the only sway bar that fit the ram 3500 with 6.4 gas hemi due to exhaust system interference with other brands .


Comments
Sway bar has held up well since installation.
Michael - 06/07/2022


by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


This sway bar is the real deal. Easy to follow instructions but I had it installed because I'm lazy. It took one hour labor




by:

Review from a similar Sway Bar with Bushing Kit in Anti-Sway Bars


Once again e-Trailer exceeds our expectations! Their customer support is top notch! Kyle was very helpful with our order and followed up with an email to also advise us our delivery was made today along with helpful videos.
We can’t wait to get front & rear sway bars installed on our Class A Motorhome!


Comments
Whow! What a great product! Makes driving our class a Motorhome so much more enjoyable,
Randy P - 12/07/2022

25
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Info for this part was:

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Updated by:
Isabelle B
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
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Installed by:
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