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

Roadmaster Rear Anti-Sway Bar

Item # RM-1259-108
Retail:$1,372.00
Our Price: $929.65
You Save: $442.35
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-1259-108 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-1259-108

  • Anti-Sway Bar
  • Roadmaster
  • Rear
  • 1-1/2 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: 1-1/2"
  • 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.



1259-108 Road Master Anti-Sway Bar - Rear

Installation Details RM-1259-108 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Roadmaster Rear Anti-Sway Bar - RM-1259-108

Average Customer Rating:  4.8 out of 5 stars   (1848 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:
2005 Workhorse W-Series

Finished installing somo springs and rear antiswaybar couple of days ago. Products seem to be of excellent quality and installation was relatively easy. Have not been able to get out on the road due to Covid-19 but hopefully will be able to travel in a couple of weeks.



by:
Fleetwood

Installed roadmaster anti sway bar on 2005 Fleetwood Southwind. Easy install works great, drives much better. Already have a track bar and a roadmaster front sway bar. Thanks for the quick shipping



by:

Shipping Co was a little rough on shipping carton, found a few bolts missing. Product look awesome & heavy, install took a while, went together well. first ride made a difference, I think the front require a bar kit also. etrailer shipping was very fast to Canada. thanks



by:
Workshorse W22

I had side-to-side sway in my 35 foot Class A motorhome on a Workhorse W-22 chassis. I initially thought shocks would help but after reading the benefits of rear sway bars on e-Trailer, I bought them. Wow, what a difference in handling and sway. As it turns out, this is what I needed and could have wasted $800 on shocks had I not read e-trailer's article and then confirming with my RV shop. Thanks e-trailer for a great recommendation, a great price and fast delivery. My upcoming 3,400-mile trip is going to be much more relaxing.



by:

Great quality parts that install with no issues. Very rugged hardware.

Mark F.

1/15/2022

I have been very impressed with the improvement in the handling this product has given my motorhome. It corners flat and is far more stable on the highway.



by:
2004 Workhorse W-Series

The sway bars really improved the handling characteristics on my RV (32 foot class A). The back and forth sway during and after cornering has been greatly reduced.



by:

Better handling at road speeds, less wind swaying. More secure ride.



by:
2005 Fleetwood Flair Motorhome

Not only was product received quickly but one of the sales reps personally reached out to me to make sure I had the correct parts. Ended up saving me an additional 90 bucks on top of lowest prices for road master products.



by:

Great customer service, of which is unheard of these days,item arrived super fast, can’t ask for more.

Kenny

4/25/2020

I can’t tell it made a difference at all.



by:

My RV drives 100% better. No Brainer!



by:

Great ride after having installed. Like night and day driving my Class A on trips.



by:

I have not installed but looks like a quality product. Shipping was fast had it in a couple of days



by:

Bryan

7/29/2022

We upgraded both the front and the rear anit-sway bars to include the additional rear behind the axle. The ride is completely different! I dont feel the need to lean when I make a turn. Truely awesome and the install went just as it showed on the video.



by:

They came pretty quick, haven't had time to install yet



by:

Great product took 50 % of sway away



by:

The product was shipped very quickly an on time. Great job Noah. I have not install it. Once again Noah Great job



by:
2008 Monaco LaPalma

Great customer service and follow through!



by:
2007 Fleetwood Bounder Motorhome



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:

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.



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:

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:

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:

Replaced the anti-sway bar on our 2019 F350. No special tools or jacks needed for the installation. Now our Lance 850 truck camper doesn’t sway nearly as much as before. Big improvement. Very pleased!



by:

The last thing to upgrade my front suspension on my 2018 Winnebago Aspect 27k. Money well spent! Easy installation, the ride greatly improved. Etrailer shipped this fast and I'm very pleased. Thanks.


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Show More Reviews

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    The Roadmaster Reflex Steering Stabilizer # RM-RBK13-RSSA will provide you with some stability on your 2007 Workhorse W22 motorhome, but a rear anti-sway bar is the best ways to provide stabilization for your motorhome. The reason is because they are such a vast improvement over the OEM sway bars and their placement at the rear of the vehicle allows for the greatest improvement in handling. After that, the best way to increase your rig's handling and comfort is with a front anti-sway bar,...
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    The two sway bars you referenced are designed to fit different versions of the W-Series Workhorse motorhomes. The part # RM-1259-108 is designed to fit the: 2000 - 2009 Workhorse W-Series W20 2000 - 2009 Workhorse W-Series W22 2000 - 2009 Workhorse W-Series W24 And the part # RM-1259-118 is designed to fit the: 2005 - 2009 Workhorse W-Series W16 2005 - 2009 Workhorse W-Series W18
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    For your Winnebago with the workhorse chassis, you will want the Roadmaster Rear Anti-Sway Bar for Motor Homes # RM-1259-108. This anti-sway will be most effective in diminishing the effects of crosswinds, passing motorists and shifting cargo. Then for the front, you have two options. One is the anti-sway bar # RM-1259-105 and the other is the same bar but also with the axle trac bar for added stability # RM-1259-106. Finally, you may also be interested in the Roadmaster Reflex Steering...
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    The order of support and stabilization I recommend is to first add the Rear Anti-Sway bar, then the Front Anti-Sway, then the Steering Stabilizer. Next use the Rear Helper Springs followed by the Front Helper Springs. To give you my recommendations, I need to know what frame you have as well as the length and weight of the vehicle. For instance, the Roadmaster Rear Anti-Sway Bar # RM-1259-108 will work on the Workhorse W20 or W22 chassis if it is under 33 feet. If you have the W22...
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    The front trac bar that comes in the Roadmaster Kit # RM-1259-106 that you referenced will do the same job as a steering stabilizer but won't be as effective. For the best of both worlds I recommend going with the front Anti-Sway Bar # RM-1259-105 and the Steering Stabilizer # RM-RBK13-RSSA. The trac bar is a piece of metal that adds stability while the stabilizer uses a spring to push you back to a neutral position. If your 2005 Dolphin is 33' or longer then the rear anti-sway bar you...
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  • Installation of the Roadmaster Rear Anti-Sway Bar
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  • Rear Sway Bar Recommendation for a 2002 Workhorse W20
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    Actually for your W22 chassis RV the correct rear sway bar would be the # RM-1259-109 for if you are 33 feet or longer or part # RM-1259-108 for if you are shorter than that. There will be some drilling required for installation. I attached instructions for both products for you to check out as well.
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  • Recommended Anti-Sway Bar For 2004 Fleetwood Southwind Motorhome
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  • Recommended Roadmaster Rear Anti-Sway Bar for a 2005 Newmar Mountain Aire 3778
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  • Upgraded Sway Bars that Fit 2006 Itasca Built on Workhorse W Series Chassis
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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 Jeff D
Installed by:
Jeff D
Employee David F
Installed by:
David F
Employee Dustin K
Video Edited:
Dustin K
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B

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