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

Roadmaster Rear Anti-Sway Bar

Item # RM-1259-108
Retail:$1,243.14
Our Price: $874.32
You Save: $368.82
Anti-Sway Bars

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Shipping Weight: 108 lbs
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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. 1-800-496-5010 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
  • Steel w Polyurethane Bushing
  • 1-1/2 Inch Diameter

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   (1328 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:

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:
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:

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




by:

My RV drives 100% better. No Brainer!




by:

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


Comments
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.
Mark J - 01/15/2022


by:

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




by:

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




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:
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:
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:

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




by:

Great product took 50 % of sway away




by:

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


Comments
I can’t tell it made a difference at all.
Kenny - 04/25/2020


by:


Comments
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.
Bryan - 07/29/2022


by:

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




by:
2007 Fleetwood Bounder Motorhome




by:
2008 Monaco LaPalma

Great customer service and follow through!




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


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


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


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


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



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Show More Reviews

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

  • Rear Sway Bar Recommendation for 2006 Winnebago Voyage 31V
    Based on my research, it looks like your 2006 Winnebago Voyage 31V was built on the Workhorse W20 chassis so for a rear Roadmaster sway bar we have the part # RM-1259-108 as a confirmed fit and will work well. This will make a very large improvement in the way your motorhome handles so you'll really be glad you went with it.
    view full answer...
  • Rear Sway Bar for 2003 Workhorse W22
    For your 2003 Workhorse W22 the recommended rear sway bar is the part # RM-1259-108 which is a 1-1/2 inch diameter bar. This will work great and would not be a compromise in any way.
    view full answer...
  • Sway Bar Availability for Workhorse W-Series Motorhomes
    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
    view full answer...
  • Rear Sway Bar Recommendation for a 2002 Workhorse W20
    For your 2002 Workhorse W20 chassis you would want the part # RM-1259-108 as a rear sway bar and not the # RM-1259-109 that you referenced.
    view full answer...
  • Rear Anti-Sway Bar for a 2003 Winnebago Adventurer on a Workhorse Chassis
    Regardless of the length of your RV you can use the Roadmaster anti-sway bar # RM-1259-108 (for 2003 Workhorse W20, W22, and W24 chassis). Bar # RM-1259-109 only fits the W22 and W24 chassis that are 33 feet long or longer like you said. Your 2003 Winnebago Adventurer 33V is 33 feet and 6 inches long so you can use this bar. I have also included a link to our help article on heavy duty vehicle stability for you.
    view full answer...
  • Sway Bar Recommendation For 2003 Workhorse W-Series 22
    According to my research the Roadmaster Rear Anti-Sway Bar part # RM-1259-109 will install on the 2004 Newmar Scottsdale that is on a 2003 W-22 Workhorse chassis. The Newmar Scottsdale from my research is 33-1/2 ft so according to Roadmaster you will not have any issues installing the sway bar. If the motor home was shorter than 33 ft the sway bar would not fit properly and you would need part # RM-1259-108. The metal box in the photo does not interfere with the installation location...
    view full answer...
    Image 1 for
  • Is Front or Rear Sway Bar Better to Improve Ride on Motorhome
    For the biggest immediate improvement in ride quality I definitely recommend starting off with a rear sway bar. For your Tiffin RV built on the Workhorse W20 chassis the Roadmaster Anti-Sway Bar # RM-1259-108 will work perfectly. Most of the weight of a motorhome is on the rear axle and because of the various chassis designs this area is where most sway and instability originates from during travel. The Roadmaster Rear Sway Bar is going to attach to the rear axle and chassis to essentially...
    view full answer...
  • Recommended Roadmaster Rear Anti-Sway Bar for a 2005 Newmar Mountain Aire 3778
    According to my research your 2005 Newmar Mountain Aire 3778 is on a Workhorse W-24 chassis therefore the correct rear anti-sway bar for you is the Roadmaster Rear Anti-Sway Bar for Motorhomes part # RM-1259-109. The Roadmaster Rear Anti-Sway Bar for Motor Homes part # RM-1259-108 would still work for you but it only has a 1-1/2" diameter bar whereas the above anti-sway bar has a 1-3/4" diameter bar and will better suited for your motorhome. I have attached a review video on the above...
    view full answer...
  • Recommended Rear Anti-Sway Bar for 2008 Workhorse W24 Chassis
    Both the Roadmaster Rear Anti-Sway Bar parts # RM-1259-109 and # RM-1259-108 that you referenced are designed to fit your 2008 Workhorse W24 Chassis. The difference between the two items is the RV length they are best suited for. If your RV is 33 feet or longer, you will want to go with # RM-1259-109 and if it is shorter than this you will need # RM-1259-108. Either item will do a great job of minimizing sway and driver fatigue by improving the stability and driveability of the vehicle....
    view full answer...
  • Recommended Suspension and Sway Improvements for 2002 Winnebago Adventurer
    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...
    view full answer...
  • Installation of the Roadmaster Rear Anti-Sway Bar
    The Roadmaster Rear Anti-Sway Bar part # RM-1259-109 is a bolt-on component that does not require the rear wheels to be removed. Please note the linked installation instructions for you to review.
    view full answer...
  • Recommended Anti-Sway Bars For A 2006 Workhorse W22 Series Chassis
    For a 2006 Workhorse W22 Series chassis you'll need the Roadmaster Front Anti-Sway Bar # RM-1259-105 and the Roadmaster Rear Anti-Sway Bar # RM-1259-108.
    view full answer...
  • Upgraded Sway Bars that Fit 2006 Itasca Built on Workhorse W Series Chassis
    I did some digging on your 2006 Itasca and it looks to be built on a Workhorse W series chassis so for a rear sway bar you'd want the part # RM-1259-108. Then for the front bar you'd want the part # RM-1259-105.
    view full answer...
  • Rear Sway Bar Recommendation for a Workhorse W22 Workhorse Winnebago Adventurer
    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.
    view full answer...
  • Recommendation for Roadmaster Front and Rear Sway Bars for a 2005 Fleetwood Bounder 34F
    Yes I can! For a front sway bar to fit your 2005 Fleetwood Bounder 34F built on a Workhorse W22 chassis you would want the Roadmaster Front Sway Bar part # RM-1259-105 and for a rear sway bar you would want the part # RM-1259-108. I confirmed these fits with Roadmaster so they will work very well for your vehicle.
    view full answer...
  • Anti-Sway Bar for 2003 Itasca Suncruiser 35U Motorhome
    For that model year, Roadmaster offers a few different fits, but I was unable to confirm which Workhorse chassis your Itasca 35U motorhome used. For W22 and W24 chassis motorhomes that are 33 feet or longer, use # RM-1259-109 or for W20, W22 or W24 chassis under 33 feet long, use # RM-1259-108. If Firestone air helper springs have been added, you'll also need the # RM-590054-00 adapter kit which would need to be welded in place.
    view full answer...
  • Recommended Rear Anti-Sway Bar For A 2003 Itasca Winnebago Suncruiser Class A Motorhome
    The thicker the diameter of the anti-sway bar the better it's going to preform. The Roadmaster Rear Anti-Sway Bar # RM-1259-108 has a 1-1/2" bar diameter and the Roadmaster Rear Anti-Sway Bar # RM-1259-109 has a 1-3/4" bar diameter. This means that the # RM-1259-109 is going to be slightly better at minimizing the sway and body roll you feel when traveling on the highway or when making tight turns. Note: If your 2003 Itasca Winnebago Suncruiser has Firestone Ride-Rite air bags then...
    view full answer...
  • Helper Springs and Sway Bars for a 2007 Fleetwood Bounder 34F Workhorse Motorhome
    Thank you for all of the specific model information for your 2007 Fleetwood Bounder 34F Workhorse Motorhome. I was able to narrow down our options to find a great set of front and rear sway bars made by Roadmaster. Since you have the 22,000 lbs GVW W22 chassis, you're going to want the Roadmaster Front Sway Bar item # RM-1259-105 and rear sway bar the Roadmaster item # RM-1259-108. I have attached a couple of installation and review videos for you to take a look at as well. For your...
    view full answer...
  • Parts Recommended that Will Reduce Sway and Driver Fatigue in a 2010 Fleetwood Fiesta Motor Home
    Adding front and rear sway bars are an option, though they might be more than you are willing to spend. For a front bar, you can use # RM-1259-105 or # RM-1259-106. For a rear bar, you can use # RM-1259-108. You could also install a steering stabilizer, # RM-RBK13-RSSA. It will work to keep the motor home centered so that the driver does not have o work as hard. I have included links to the instructions for part # RM-1259-106 and part # RM-1259-108 for you.
    view full answer...
  • Will Anti-Sway Bars Give Additional Support With Steering Stabilizer on 2007 Workhorse W22 Motorhome
    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,...
    view full answer...
  • Recommended Stabilization Parts for 2009 Winnbago WFE26P with Workhorse W-Series Chassis
    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...
    view full answer...
  • Should Roadmaster Trac Bar or Steering Stabilizer be Used to Improve Steering on W22 Chassis
    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...
    view full answer...
  • Recommended Anti-Sway Bar For 2004 Fleetwood Southwind Motorhome
    Based on my research your 2004 Fleetwood Southwind Motorhome was either built on the Ford Chassis, or the Workhorse Chassis. If your Southwind was built on the Ford Chassis I recommend the Roadmaster Rear Anti-Sway Bar # RM-1139-143, and Front Anti-Sway Bar # RM-1139-148. If your Southwind was built on the Workhorse Chassis I recommend the Roadmaster Rear Anti-Sway Bar # RM-1259-108, and Front Anti-Sway Bar # RM-1259-105.
    view full answer...
  • Rear Anti-Sway Bar for a 2007 Winnebago Built on a Workhorse W24 Chassis
    Roadmaster rear anti-sway bar # RM-1259-109 will fit your 2007 Workhorse W24 chassis. It is intended for models that are 33 feet or longer. Since yours is 36 feet long it fits that description. If you also want to upgrade the front of the RV you can use # RM-1259-105. Some other helpful items that will greatly improve ride quality and drivability include a steering stabilizer such as # RM-RBK13-RSSA, front axle stabilizer # TT2304 and rear axle stabilizer # RM-TRACW-22 (the rear one only...
    view full answer...


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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
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Updated by:
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