Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter
(1857 reviews)
Price: $822.45
In Stock
Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter
Item # RM-1139-146
Retail:$1,025.20
Our Price: $822.45
You Save: $202.75
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- All Info
- Reviews (1857)
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Roadmaster Anti-Sway Bars - RM-1139-146
- 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
- Designed to support your factory anti-sway bar - not to replace it
- 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: 1-1/2"
- Limited Lifetime Warranty
- Application: 16,000 lb and 18,000 lb GVWR chassis
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.
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.
1139-146 Road Master Anti-Sway Bar - Rear
Installation Details
This Product Fits The Following Vehicles
- 2012 - 2021 Thor ACE Motorhome Ford - 16,000 GVWR
- 2013 - 2021 Thor ACE Motorhome Ford - 18,000 GVWR
- 2019 - 2021 Holiday Rambler Admiral Motorhome Ford - 16,000 GVWR
- 2016 - 2021 Holiday Rambler Admiral Motorhome Ford - 18,000 GVWR
- 2016 - 2017 Holiday Rambler Admiral XE Motorhome Ford - 16,000 GVWR
- 2016 - 2018 Holiday Rambler Admiral XE Motorhome Ford - 18,000 GVWR
- 2010 - 2020 Winnebago Adventurer Motorhome Ford - 18,000 GVWR
- 2016 - 2020 Jayco Alante Motorhome Ford - 16,000 GVWR
- 2016 - 2020 Jayco Alante Motorhome Ford - 18,000 GVWR
- 2012 - 2012 Holiday Rambler Aluma Lite Motorhome Ford - 18,000 GVWR
- 2008 - 2010 Holiday Rambler Arista Motorhome Ford - 16,000 GVWR
- 2008 - 2009 Holiday Rambler Arista Motorhome Ford - 18,000 GVWR
- 2018 - 2018 Fleetwood Axon Motorhome Ford - 18,000 GVWR
- 2013 - 2014 Newmar Bay Star Motorhome Ford - 18,000 GVWR
- 2012 - 2020 Newmar Bay Star Sport Motorhome Ford - 18,000 GVWR
- 2011 - 2014 Fleetwood Bounder Classic Motorhome Ford - 18,000 GVWR
- 2015 - 2016 Winnebago Brave Motorhome Ford - 16,000 GVWR
- 2015 - 2016 Winnebago Brave Motorhome Ford - 18,000 GVWR
- 2008 - 2009 Winnebago Chalet Motorhome Ford - 18,000 GVWR
- 2006 - 2007 Damon Daybreak Motorhome Ford - 15,700 GVWR
- 2010 - 2010 Damon Daybreak Motorhome Ford - 18,000 GVWR
- 2011 - 2014 Thor Daybreak Motorhome Ford - 18,000 GVWR
- 2010 - 2010 Fleetwood Encounter Motorhome Ford - 16,000 GVWR
- 2010 - 2010 Fleetwood Encounter Motorhome Ford - 18,000 GVWR
- 2005 - 2014 Ford F-350, 450, and 550 Cab and Chassis F-550 - Class A Motorhome with V10
- 2005 - 2020 Ford F-53 Ford - 15,700 GVWR
- 2005 - 2020 Ford F-53 Ford - 16,000 GVWR
- 2005 - 2020 Ford F-53 Ford - 18,000 GVWR
- 2015 - 2020 Ford F-550 Cab and Chassis Class A Motorhome with V10
- 2006 - 2007 Fleetwood Fiesta Motorhome Ford - 15,700 GVWR See All Vehicle Fits
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- Too difficult to install
Customer Reviews
Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter - RM-1139-146
Average Customer Rating: 4.8 out of 5 stars (1857 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: Greg 08/29/2022
2018 Ford F-53
My anti/sway bars came so fast way ahead of time and I am so happy ETrailer site was the easiest site to order from and super easy to find the right product and get it ordered and the People are so friendly to talk to and so very helpful 100 % pros, they know their stuff !!! if you need it call them or email them or just Order online and know your getting the best part and price !!
by: Thomas 11/01/2023
Had this installed along with a front sway bar & steering stabilizer. The rig doesn’t wear me out anymore, I can drive all day long. Just the result I was hoping for.
by: Jack 10/24/2023
Having the front and rear sway bars on my Jayco Alante 31 V has made a tremendous difference in the handling. As always the service from your company is exceptional !!!
by: Donald C.03/29/2022
We find that our RV is more stable and handles better. Wind gusts have less effect on the track of the RV. Also, the wind gusts from large trucks are less troublesome. My wife drives all the time and she is very happy with the result. In addition to the anti sway bar, we installed steering stabilization and heavy duty shock absorbers.
Donald C.
3/30/2023
We are still pleased with the product.
by: Anthony04/13/2024
The installation was harder than discri bed
by: Michael B10/11/2023
Parts came in 3 working days. Packaged well and all parts included. Gwen took the order was very professional and knowledgeable. I am have parts installed next week and look forward to driving the motorhome to see how it is improved.
by: Ronald 09/21/2023
Well built. Well designed. Installation was easy. Improved the handling/ride quite a bit!
by: Robin11/07/2020
Etrailer is by far the BEST place to buy RV parts, period! I didn’t know that they have a price match guarantee, and if it is sold cheaper somewhere else, they will price match it!
Tannith saved me hundreds of $$$! Even on an order I placed the month before, because I was not aware of the price match!
I can’t say enough about their service, communication and dedication that you are getting the right part for your RV.
I will continue to do business with them because they are honest and dependable and provide great updates and communication!
Plus you get to talk to a real person when you call in, plus you can understand them!
by: Mike 07/19/2023
This motorhome would rock side to side going down the road, we ordered this sway bar kit and it has helped tremendously.
Great product.
by: Michael06/04/2023
Added this sway bar to our 29' Winnebago. Great results and a great upgrade for stability. Installation was straight-forward, hardest part was breaking loose the original bolts.
by: William 04/04/2024
2017 Thor ACE Motorhome
Unbelievably fast delivery, thanks!
by: Alfredo 07/18/2023
Roadmaster
Thank you ET for such a great product. The easy install was great. I did it all in my drive way. The Roadmaster 1139-146 really tamed the rear of my 2019 Thor wind sport.
by: Steve 06/16/2023
great product does what it is supposed to do, rig does not wander anywhere near what it was before installing the sway bar.
by: Jimmy09/06/2023
The finish is not very good. It has scratches everywhere
Shawnee from etrailer was great!
by: Jason06/14/2020
Should have bought it earlier. Makes a huge difference in driving. It took the rock and roll out for sure. I had to leave off the inside washers on allen bolts to line up the shocks. Installed easily in 1.5hr. Pretreat bolts that need removing with penatraitor.
by: Don 08/19/2022
just took a short trip with my motorhome about 300 miles with new anti-sway bars installed on front and rear axles, totally impressed with ride and handling remove sway from my motorhome about 75 to 80 percent. I would recommend roadmaster's product and your company's knowledge and service, job well done, thank you
by: Steven07/09/2023
Installing it by myself was not hard at all. Definitely heavy duty.
Assistance on torque specks via their tech dept was outstanding.
by: Sheldon07/02/2018
2015 Ford F-53
The trial run proved to be very satisfactory.
The product delivered a stable ride and in a cross wind was very effective in keeping the unit from swaying.
Very comfortable drive.
by: Mark R11/13/2022
11/2022 we were forced to leave Florida running from Hurricane Nicole. With 25mph cross winds and +15mph gusts our 2016 Vista LX, 31 footer, was a handful to say the least. Without etrailers sway bars and bump stops we would have not been able to maintain our 50 to 55mph highway speed, better yet we probably would be in a ditch with other RV'S, 5th wheels and 18 wheelers. These items are amazing. I did have installed the Safe T Steer because etrailer was way behind on their steering stabilizer. Thanks you etrailer. BTW, if you are in the Indianapolis area I recommend Warner Springs on Bluff Rd. to do your install... Great people.
by: Ronald12/13/2018
2013 Ford F-53
We were wanting to improve steering and ride on our 2013 Itasca Sunstar Motorhome. Crystal at Etrailer.com work with me to select the correct parts to upgrade the front sway bar, add a rear sway bar, add a steering stabilizer and Sumo Springs. McGee Commercial Tire & Service in Fort Myers, FL installed all the parts with a little over 9 hours of labor. Test driving the changes in a brisk cross wind showed us a much better ride, a more sold feel to the rig and better steering. All the parts arrive in a couple days and all were the correct parts for our unit. McGee did a very professional job of installation and I could not be happier.
Ronald
12/15/2019
We continue to be very pleased with the improvement in ride and steering of our motor home since the parts were added. It has made our travel more comfortable and safer due to the improvement in steering and stability.
by: Larry06/09/2020
This went on our 2019 Windsport 29M. Outside of a couple minor install issues (Breaking frame bolts loose and needing to remove washer on the buttonhead bolt so the shock would fit in) the purchase went great - CS was very helpful the part shipped and arrived quickly.
I just finished the test drive and there is a noticeable difference in stiffness I should mention we already had front and rear Sumo springs and Roadmaster steering stabilizer which are a huge improvement over the stock chassis but still wanted to improve the interstate semi push and unexpected wind gusts . So far so good.
Larry
6/10/2021
Ive been asked to provide a 1 year update... After the past year I can sincerely say this addition is well worth the price for anyone trying to control roll on class A with F53 chassis. Sumos alone help but adding the rear sway bar makes driving so much more enjoyable.
by: Colin10/08/2022
We recently installed the Roadmaster Sway Bars along with Sumo springs from trailer on our 2017 Winnebago Vista 31T which utilizes the Ford F53 chassis. What a game changer in the overall ride and handling. Customer service was excellent and I highly recommend the company for their high quality product.
by: Tim N05/24/2019
Roadmaster
The roadmaster anti sway bar is a great product! Although I had someone else install it, it looked like an easy and clean install. It improved the drive ability and handling of our RV tremendously. I highly recommend this product to anyone driving a class A Rv.
Tim N.
5/24/2020
Great! Although I’m not in our Motorcoach all year it is holding up well and continues to perform as advertised.
by: Al10/28/2022
2018 Thor Windsport Motorhome
I am giving the Anti-Sway Bar an excellent rating based upon quality. I did find the instructions and videos helpful, but it was evident that this Anti-Sway Bar is a little unique. For example the tapered bolt and washer for the lower shock assembly required the washer to be removed in order for the shock to remount properly. This may be due to my shock assembly being angled. Additionally, the instructions did not indicate the shock should be reinstalled prior to the initial shackle test fit. But again my overall rating is excellent. Just some hints for the next installer.
by: Julia09/23/2022
We installed front and rear anti sway bars on our Winnebago Vista and they significantly reduced the swerving motion that we were experiencing. We’re very pleased.
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Show More Reviews
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view full answer...
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Greg
8/30/2023
Wonderful product and its smoothed out our RV ride less sway than ever before and it was simple to install.