Roadmaster Rear Anti-Sway Bar - 1-5/8" Diameter
(1852 reviews)
Price: $798.95
In Stock
Roadmaster Rear Anti-Sway Bar - 1-5/8" Diameter
Item # RM-1139-149
Retail:$1,179.79
Our Price: $798.95
You Save: $380.84
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- Reviews (1852)
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Roadmaster Anti-Sway Bars - RM-1139-149
- Anti-Sway Bar
- Roadmaster
- Rear
- 1-5/8 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: 1-5/8"
- Limited Lifetime Warranty
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.
1139-149 Road Master Anti-Sway Bar - Rear
Installation Details
This Product Fits The Following Vehicles
- 2021 - 2021 Thor ACE Motorhome Ford - 16,000 GVWR
- 2021 - 2023 Thor ACE Motorhome Ford - 18,000 GVWR
- 2021 - 2023 Holiday Rambler Admiral Motorhome Ford - 16,000 GVWR
- 2021 - 2023 Holiday Rambler Admiral Motorhome Ford - 18,000 GVWR
- 2008 - 2023 Holiday Rambler Admiral Motorhome Ford - 22,000 GVWR
- 2021 - 2021 Holiday Rambler Admiral Motorhome Ford - 26,000 GVWR
- 2022 - 2022 Winnebago Adventurer Motorhome Ford - 18,000 GVWR
- 2007 - 2023 Winnebago Adventurer Motorhome Ford - 22,000 GVWR
- 2007 - 2019 Winnebago Adventurer Motorhome Ford - 24,000 GVWR
- 2015 - 2016 Winnebago Adventurer Motorhome Ford - 26,000 GVWR
- 2022 - 2022 Jayco Alante Motorhome Ford - 16,000 GVWR
- 2022 - 2023 Jayco Alante Motorhome Ford - 18,000 GVWR
- 2007 - 2008 Coachmen Aurora Motorhome Ford - 22,000 GVWR
- 2015 - 2022 Newmar Bay Star Motorhome Ford - 22,000 GVWR
- 2018 - 2023 Newmar Bay Star Motorhome Ford - 24,000 GVWR
- 2020 - 2023 Newmar Bay Star Motorhome Ford - 26,000 GVWR
- 2019 - 2023 Newmar Bay Star Sport Motorhome Ford - 22,000 GVWR
- 2021 - 2021 Fleetwood Bounder Anniversary Edition Motorhome Ford - 22,000 GVWR
- 2021 - 2021 Fleetwood Bounder Anniversary Edition Motorhome Ford - 24,000 GVWR
- 2021 - 2021 Fleetwood Bounder Anniversary Edition Motorhome Ford - 26,000 GVWR
- 2010 - 2015 Fleetwood Bounder Classic Motorhome Ford - 22,000 GVWR
- 2007 - 2023 Fleetwood Bounder Motorhome Ford - 22,000 GVWR
- 2009 - 2019 Fleetwood Bounder Motorhome Ford - 24,000 GVWR
- 2019 - 2023 Fleetwood Bounder Motorhome Ford - 26,000 GVWR
- 2008 - 2009 Gulf Stream Bounty Hunter Motorhome Ford - 24,000 GVWR
- 2007 - 2014 Newmar Canyon Star Motorhome Ford - 22,000 GVWR
- 2014 - 2015 Newmar Canyon Star Motorhome Ford - 24,000 GVWR
- 2009 - 2020 Newmar Canyon Star Motorhome Ford - 26,000 GVWR
- 2008 - 2010 Damon Challenger Motorhome Ford - 22,000 GVWR
- 2011 - 2022 Thor Challenger Motorhome Ford - 22,000 GVWR See All Vehicle Fits
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
- Wrong item was ordered
- Did not arrive in time
- Product did not meet expectations
Customer Reviews
Roadmaster Rear Anti-Sway Bar - 1-5/8" Diameter - RM-1139-149
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: Steve 04/26/2024
I installed a front and rear sway bar and they solved the problem. Before that I had a serious problem with cross winds and semis passing. No more white knuckles!
by: Dal03/23/2024
Very smart investment. In combination with the upgraded rear anti-sway bar the amount of steering inputs was greatly reduced. Definitely extended the miles I now drive per day.
by: Howard04/15/2024
First, Eric was a great help throughout the purchasing and installation. I watched the tutorial numerous times and set up my tools. I bought a 3/4 inch torque wrench at Harbor Freight and a 4 ft galvanized pipe at Home Depot. I followed the instructions and the tutorial to the letter. The bar and mounting plates are heavy, so be very careful. This job isn't for a beginner, but if you are somewhat mechanically inclined, you can install it. The 300 Ft. Lbs torque of the 8 nuts took everything out of me. LOL...I adjusted the end links twice, and it leveled out great. Now, I will do a test run and see how it improves the handling of my motorhome. Its a 2022 Entegra Vision 29S.
by: Mark S.05/18/2018
Ford
I purchased this part because of the rocking on my 2011 Tiifen 34TGA built on the Ford F53 frame. After searching I found this on etrailer and I have to say the video and customer support from etrailer is outstanding. The part came quickly. The install is straight forward as the video shows but be prepared for some hard work. Getting the bolts off the frame after years on the road requires a lot of muscle, my 12 gal compressor and Harbor Freight air wrench was not upto the task. You will need a torque wrench that goes upto the 300 ft/lbs required for the plate install. We had to use our legs to get to 300.
After installing I took a long test drive and the difference in handling is amazing. Much less rocking and more stable. I would recommend this anti-sway bar to anyone with this Ford frame.
by: Kelly08/04/2023
Item is well made as you would expect. The directions for installation are not very detailed. For example, it tells you to “install the frame bracket, place the bracket flat against the frame and tighten the crossmember bolts” I left out a couple of other things it says about lifting the rv to access the bolts etc… it does not tell you which part needs to be flat against the frame, there are 2 sides that hit the frame, and if you look at it it is obvious that when you put the bolts in and tighten them down, it has to be against the frame. On the other side that is on the bracket, it however does not touch the frame, so I guess the confusion is, which side are they talking about? One side that has no other way to be attached because it will be flat on the frame when the bolts are tightened, or the other side that sits near the frame, but not touching, as it will only install one way as the bolts will not go through the holes of it sits on the frame as suggested. Normally they have videos showing the installation process which are very good, they do have videos, but not for this model. All in all this is an excellent piece of equipment made in America.
Jenny N.
8/15/2023
I reached out to Roadmaster about the questions that you had on the brackets. They advised that on both sides you remove the two lower crossmember bolts and install the frame brackets so, both brackets are installed right in same holes with the same bolts that were just removed. They wanted to see if you could send pictures of the location that you were talking about.
by: Clifford10/28/2022
The added stability makes my motorhome a pleasure to drive any most road conditions. Mountains, cross winds narrow back roads. Really a nice improvement.
Clifford
10/29/2023
The 2nd sway bar added a great stability factor to my motorhome. Traveling in new areas with wind, hills and curvy roads that surprise you, I can tell you I find that Im not tired and stressed when I arrive at my destination. Great addition to my motorhome.
Mike L.
11/14/2023
@Clifford We're glad to hear you're happy with the anti-sway bar.
by: Bryan 08/29/2022
Amazing difference!! Videos walked me through the installation and it went very well. The ride is incredibly better!!
Bryan
8/30/2023
Very effective!! Stability and handling is much better!
by: Mario10/17/2018
2018 Ford F-53
Purchased Roadmaster front & rear anti-sway Bar and a Reflex steering stabilizer for a 2019 Winnebago Vista 27N. Heidi, etrailer.com customer representative, was extremely helpful assisting me with the order. Products were delivered in three days. The difference in which the RV rides with anti-sway bars and stabilizer installed is incredible. Much smoother ride with very little rocking. The RV is a lot easier to control when taking a turn. High winds and passing 18 wheelers are no longer an issue. The RV stays on course with very little effort on my part. Highly recommend these products for any RV no matter the size and a shot out to etrailer.com for their outstanding customer support attitude.
by: Denise and Harry Johnson06/12/2022
2012 Ford F-53
Service is excellent. All of the parts were shipped and the installation video was right on. Great product! Made a huge difference in our initial test drive on our 2012 Tiffin Allegro.
Denise J.
6/13/2023
Excellent!
Mike L.
9/6/2023
@DeniseJ We're happy to hear that the Roadmaster # RM-1139-149 anti-sway bar worked well for you!
by: Mike09/07/2020
After installation there was a remarkably difference in how my Mirada Select 37TB handled. It’s close to 40’ with gas powered engine. Ford F53 chassis with V10. I will install front after feeling the improvement from the rear installation. Everything I needed was in the kit. The only hard part was cleaning up the threads on the existing u-bolts before removing. Highly recommend the upgraded, world of difference in my situation.
by: Gaylord Sartain III04/18/2022
Prior to installation of this kit my RV acted like it was going to tip over as it swayed from side to side when I made a turn or was hit by a cross-wind. Post install the drivability of my 37' RV increased by 100%.
Gaylord I.
4/19/2023
Still drives great, much more relaxed when I drive on windy days.
by: Brian 06/08/2023
I am happy to finally have the rear anti-sway bar installed. Noticed the difference right away. I will order the front anti-sway bar soon. I have the skills to install the anti-sway bar, but did not have the heavy tools to do the job. Paided a local shop 2hrs labour, well worth it.
by: Nick10/03/2023
I have not found any one to install it yet. Any recommendations?
Katrina D.
10/5/2023
We do not specifically recommend anyone. However, if you go to this link that I have attached below, you can search for local installers near you that are willing to install anti-sway bars on motorhomes. Like I said, we do not recommend anyone specifically, but all of the shops that are in that list, are trusted dealers that we do business with and should be able to help you schedule an appointment for install.
Helpful Links
by: John 03/25/2024
2022 Jayco Alante Motorhome
Delivered early.
by: Bud G12/01/2021
Roadmaster
I have not been able to get it installed, it is too difficult for my me to do in drive way, the front was easier. I have however installed the front anti sway bar and Roadmaster stabilizer. very happy with handling improvement
Sierra K.
12/30/2021
Here is an installation video that will give you a visual on the install of your 2016 Ford F-53 to help you out starting at the 6:10 mark:
Bud G.
12/2/2022
I am completely satisfied with Etrailer and Road master. currently lookingfbor battery watering sys for coach batteries, 4-6v interstate GC batteries
by: Chris 05/15/2023
Really makes a big difference, recommend watching install video. tied lower axle plate to differential with metal coat hanger before taking nuts off. made it easy to bolt up lower plate. installed on 2017 f-53.
by: David06/29/2020
2017 Fleetwood Bounder Motorhome
The Roadmaster products are great. They fit as advertised and etrailer's videos are very helpful for installing. I would recommend you supply the grease in a small tube or other container. Both of my sway bar hardware kits had grease smeared all over the inside as the plastic grease container was crushed.
I would highly recommend suggesting or requiring the inclusion of new U-Bolts when buying the rear sway bar or steering stabilizer. My Fleetwood Bounder started its life in Ohio before I brought it to California, and unfortunately there's considerable rust on the suspension components. Removing the U-Bolts was extremely difficult (applied rust penetrant and heat to break the nuts loose). I'm contemplating replacing the U-Bolts to ensure their structural integrity.
by: William05/25/2023
Big job, completed in 4 hours by myself. Not bad for a person 81 years old. Once again great instructions.
by: Shel07/12/2019
Got delivery in a timely manner. All items were as advertised and installation hardware was complete.
The Sumo Springs and heavy duty sway bars made a SIGNIFICANT difference in the ride and handling.
Would have no problem ordering from this company again. They were also very helpful and patient on the phone.
by: Russell 01/30/2023
2018 Fleetwood Bounder Motorhome
This was the right product to start with. Stopped the rolling. Handles so much better in cornering. Trucks don’t seem to push me as much now. Just installed Koni shocks and will see how they do next trip
by: Robert 10/25/2022
Fleetwood
I purchased the Roadmaster rear anti-sway bar to help improve sway and cornering on my 2013 Fleetwood bounder 35K class A. Motor home. While towing my 26 ft enclosed trailer. It made a great improvement and would highly recommend it.
by: Gary04/28/2022
2018 Holiday Rambler Vacationer XE Motorhome
Great quality parts, easy install have not driven it since installing will give a review update when I do
Gary
5/17/2023
A must have if you have an RV f53 chassis
by: David06/10/2023
2019 Honda Civic
Lightning fast delivery (days earlier than promised)!
by: Jeremy 09/05/2022
Jeep
I called to try and buy every upgrade I could to improve the handling of my 35’ class A Tiffin. I wanted to buy front and rear sway bars and a steering stabilizer. The rep wouldn’t sell me all of those. Said he would only sell me the rear, and to give that a try till before buying anything else. He was right. Took care of all my issue with handling. The rig handle perfect now. I can cruise the highway with one hand while towing my Jeep behind the RV
by: Steven 03/24/2023
The package arrived on time and everything was as advertised. I installed it the next day, doing it solo it took a little a little longer as the parts are heavy.
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- Recommended Suspension Steering and Anti-Sway Components for 2020 Ford F-53 ChassisMy recommendation for increasing the stability of the 2020 Ford F-53 chassis is to replace the factory installed sway bars and adding a steering stabilzer. - Front Anti-Sway bar, # RM-1139-148 - Rear anti-sway bar, # RM-1139-149 - Steering Stabilizer, # RM-RBK25-RSSA You may or may not need # RM-590050-00 for square U-bolts or Round U-Bolt Kit, # RM-590050-10. - Rear Axle, SumoSprings Maxim Custom Helper Springs, # SSR-187-54-1 - Front Axle, SumoSprings Rebel Custom Helper Springs, #...
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view full answer...
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Info for this part was:
Expert Research:
Mike L
Expert Research:
Jameson C
Expert Research:
Adam R
Updated by:
Lindsey S
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Wilson B
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Jeff D
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Dustin K
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Robert C
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Schuyler H
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Mark S.
5/18/2019
After a year of use the product is still rock solid and keeping my unit from rockin and rollin on the highway and local roads. I still recommend this for your MH on a the Ford F53 chassis.