Roadmaster Front Anti-Sway Bar
(1063 reviews)
Price: $574.72
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Roadmaster Front Anti-Sway Bar
Item # RM-1139-148
Retail:$721.58
Our Price: $574.72
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Roadmaster Anti-Sway Bars - RM-1139-148
- Anti-Sway Bar
- Front
- Roadmaster
- 1-3/4 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 front 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 front 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 rear anti-sway bar (sold separately) for absolute stability - available on certain applications only
- Made in the USA
Specs:
- Bar diameter: 1-3/4"
- 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.
1139-148 Road Master Anti-Sway Bar - Front
Replaces Roadmaster 1139-140 and 1139-206
Installation Details
This Product Fits The Following Vehicles
- 2013 - 2021 Thor ACE Motorhome Ford - 18,000 GVWR
- 2018 - 2021 Thor ACE Motorhome Ford - 20,500 GVWR
- 2016 - 2021 Holiday Rambler Admiral Motorhome Ford - 18,000 GVWR
- 2008 - 2010 Holiday Rambler Admiral Motorhome Ford - 20,500 GVWR
- 2008 - 2022 Holiday Rambler Admiral Motorhome Ford - 22,000 GVWR
- 2021 - 2021 Holiday Rambler Admiral Motorhome Ford - 26,000 GVWR
- 2016 - 2018 Holiday Rambler Admiral XE Motorhome Ford - 18,000 GVWR
- 2000 - 2021 Winnebago Adventurer Motorhome Ford - 18,000 GVWR
- 2000 - 2005 Winnebago Adventurer Motorhome Ford - 20,500 GVWR
- 2002 - 2022 Winnebago Adventurer Motorhome Ford - 22,000 GVWR
- 2012 - 2019 Winnebago Adventurer Motorhome Ford - 24,000 GVWR
- 2015 - 2016 Winnebago Adventurer Motorhome Ford - 26,000 GVWR
- 2016 - 2021 Jayco Alante Motorhome Ford - 18,000 GVWR
- 2018 - 2018 Jayco Alante Motorhome Ford - 20,500 GVWR
- 2005 - 2009 Tiffin Allegro Bay Motorhome Ford - 22,000 GVWR
- 2002 - 2008 Tiffin Allegro Motorhome Ford - 20,500 GVWR
- 2006 - 2018 Tiffin Allegro Motorhome Ford - 22,000 GVWR
- 2012 - 2018 Tiffin Allegro Motorhome Ford - 24,000 GVWR
- 2017 - 2018 Tiffin Allegro Motorhome Ford - 26,000 GVWR
- 2012 - 2012 Holiday Rambler Aluma Lite Motorhome Ford - 18,000 GVWR
- 2008 - 2009 Holiday Rambler Arista Motorhome Ford - 18,000 GVWR
- 2008 - 2010 Holiday Rambler Arista Motorhome Ford - 20,500 GVWR
- 2001 - 2002 Coachmen Aurora Motorhome Ford - 18,000 GVWR
- 2001 - 2007 Coachmen Aurora Motorhome Ford - 20,500 GVWR
- 2006 - 2008 Coachmen Aurora Motorhome Ford - 22,000 GVWR
- 2018 - 2018 Fleetwood Axon Motorhome Ford - 18,000 GVWR
- 2013 - 2014 Newmar Bay Star Motorhome Ford - 18,000 GVWR
- 2013 - 2014 Newmar Bay Star Motorhome Ford - 20,500 GVWR
- 2015 - 2021 Newmar Bay Star Motorhome Ford - 22,000 GVWR
- 2018 - 2021 Newmar Bay Star Motorhome Ford - 24,000 GVWR See All Vehicle Fits
Customer Reviews
Roadmaster Front Anti-Sway Bar - RM-1139-148
Average Customer Rating: 4.8 out of 5 stars (1063 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 front axle and to the frame to balance weight transfer and reduce body roll.by: Deana04/14/2022
It was a scary ride prior to the install, now a 100% less sway. Just wish there was a sway bar upgrade for the rear of the Thor Outlaw.
Comments
You mentioned that you would be interested in a rear sway bar for your 2019 Thor Outlaw. I checked and we might have one available. I would need to ask you a few questions. Does your Outlaw have a V8 or V10 engine? Does it have automatic chains?
-- 
Jenny N - 04/25/2022by: 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: James03/16/2022
The sway bars improved the steering on the motorhome and provided a very stable ride with no sway.
by: Joel 06/23/2022
Best upgrade for a class A motorhome!
by: Gary04/28/2022
Great fit with no modification necessary
Have not driven it since install. Will update on performance wise
by: Bruce04/22/2021
received and installed the new Roadmaster part.
Bit extra effort solo, but completed in couple hours
by: Art 06/23/2022
These were a pretty simple install and work as advertised. I installed them by myself but could have used another set of hands due to the weight of the bar.
I recommend them.
by: Robert05/08/2022
Ford
Huge improvement in Ford F53 handling c haracteristics.
by: Wayne 06/15/2021
We took our first trip with these installed over the last two months (April & May 2021 4,000 miles). All three of these were put on at the same time front & rear anti sway bars with the extended length U-bolts. The RV handled great.
by: Larry06/03/2022
Very good, basically uncomplicated install. Thank you
by: Gary04/30/2018
2015 Ford F-53
This was installed along with new rear sway bar. This required a little more effort as it was not exactly a mounting match, it was ordered and was supposed to be but wasn't. The bushing brackets didn't line up to the axle mounting holes, they were offset about 1& 5/8 inch on center and caused the bushing to sit right on the curve of the sway bar. I had to make 2 adapted brackets to allow it to fit the axle mounting holes properly. It wasn't a big deal as I have machine shop and engineering back ground. It along with the rear vastly improved the sway and handling of the RV.
by: Daniel S. 09/17/2019
This Sway bar is a must add on if you own a motor home. I have a Tiffin 32sa and it handled better compared to most models that I have test driven but I wanted a better ride. I added this and a new rear sway bar system and the ride is like night and day. We also have the factory Sumo springs which is a plus as well. No more rolling into the turns. I also added a steering shock damper. No more drifting. All in all it was worth the money and saves on driving fatigue when on long trips. I highly recommend all items mentioned.
by: Mike 12/13/2019
2018 Tiffin Allegro Motorhome
With the RM-1139-148 rear sway bar installed it definitely handles better than the stock chassis. However when you get up over 65 MPH it starts to give you the same characteristics of the stock chassis just not as bad. I'm glad I installed it because even over 65 It's still better than stock.
by: Richard 01/05/2022
Extremely helpful and knowledgeable with selection process. Over the top with high quality customer service!!! Mary is a terrific asset!!!
by: Gary06/29/2020
Very happy with all the suspension parts I have received from them fast shipping . I will be ordering more from them in the future .
by: Charles05/10/2019
2018 Jeep JL Wrangler
Sway bar arrived quickly. Instructions were not very detailed. For my Motorhome, Winnebago Adventurer (37F), I did not need the extra bolts, nuts and washers supplied and found no reference as to where they were needed. My original sway bar was attached with 6 bolts total. Have not test driven the Motorhome to verify for myself if sway has been reduced - hence the 4 stars vs 5. BUT, the bar is bigger and hopefully will help with that. Have not installed the rear bar yet.
by: Bob 01/13/2021
2019 Ford F-53
Over some years I have purchased several items from etrailer. 3 or 4 class III trailer hitches, trailer wiring harness, 4 different sway bars for class A motor homes, Reflex Steering Stabilizer and a few other items. The products have always been exactly as advertised, well packaged, good instructions and delivered in a timely manner. Communication with etrailer personnel is always easy, very detailed complete. It I need an item and it is one I plan to order on line, then odds are that I will get it from etrailer.
by: Kerry 02/24/2021
With all my upgrades to suspension it drives like a diesel pusher.
Very stable in wind and side loads.
I had a little trouble getting it installed as I am unable to do it myself anymore. But once I suggested they read the instructions it got done right.
by: John B.12/15/2019
This has help reduce excessive sway of my motorhome and reduce driver fatigue. I have a 2017 Allegro. A local repair shop install it for me in about an hour.
Comments
It has really made a positive improvement in the ride quality. Recently the front suspension started making groans and noises. I had to have the sway bar removed and the bushings relubed. It was lubricated when installed but the supplied lubricant failed.
John B - 12/16/2020I made sure to reach out to the manufacture. They stated that it is best to lubricate every 3,000 miles. Roadmaster recommends this lubrication # L11404
LubriMatic Marine Trailer Wheel Bearing Grease - 16 oz. Can
$15.00
Jordan F - 1/8/2021
Helpful Linkby: CDB12/07/2020
The addition of these antisway bars made a world of difference. The coach didn't rock like it did before and made the drive more pleasurable for my wife. I highly recommend putting these on your gas coach.
by: Thomas04/28/2018
2017 Ram 3500
I ordered on Wednesday it arrived Friday morning . Installed in less then a hour. I also got the rear sway bar from in etrailer just as fast. Good customer service.
by: John04/02/2019
Ford
The sway bar was the right choice For the Ford Chassis RV. It really took the sway and darting out of the Coach. It was installed on a RB37 Thor Toy Hauler Coach.
john
by: Michael S07/12/2020
the roadmaster sway bars and the expert assistance from etrailer have transformed my motorhome which I was ready to sell to one that I can now enjoy driving.
The swaying has stopped and it feels more secure on the road.
Thanks again!
by: Jeff 05/11/2021
You guys are by far the best priced and best operated company I have ever done business with . From Adam to all the others that have made my purchases so easy . Thank You for your great customer service.Jeff
by: Michael 10/04/2021
Polite assistance and quick with fast delivery.
Thanks so much
Mike
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Ask the Experts about this Roadmaster Anti-Sway Bars
- Front Anti-Sway Bar for a 2016 Tiffin Allegro Class A RV on a Ford F-550 ChassisFor your Class A motor home built on the 2016 Ford F-550 chassis you can use Roadmaster front anti-sway bar # RM-1139-148. This unit will replace the factory sway bar.
view full answer... - Which Roadmaster Swaybar for Use on 2016 Ford F-53 with 24k ChassisYou are right at the cut off point in terms of weight for sway bars for your 2016 Ford F-53 RV. Above 24k calls for the part # RM-1139-148. The thicker sway bar is recommended for the heavier RVs. Since you are at 24k the # RM-1139-48 will be an effective choice.
view full answer... - Will Roadmaster Anti-Sway Bar Work on 2017 Thor Outlaw on Ford F-53 Chassis and 26,000 lb GVWRI checked with Roadmaster and the Roadmaster Front Anti-Sway Bar for Motorhomes # RM-1139-148 is a fit for your 2017 Thor Outlaw with a 26,000 lb GVWR built on a 2016 Ford F-53 chassis (motorhomes are normally built on previous model year chassis). In regards to an anti-sway bar that specifically said it would not fit your Thor Outlaw, that is true for the REAR anti-sway bars, none of which will fit your rig. There is no such note from Roadmaster concerning the FRONT anti-sway bars. I...
view full answer... - Is There Maintenance Required After Install of Roadmaster Front Sway Bar on MotorhomeThere isn't any follow up maintenance required after you install the Roadmaster Front Sway Bar part # RM-1139-148 on your RV. Just install it and enjoy your improved handling and ride quality!
view full answer... - Front Sway Bar that Fits 2021 Thor Outlaw Ford F-53 26k GVWRWe have a front sway bar that fits your 2021 Thor Outlaw F-53 with a 26k GVWR with the part # RM-1139-148 but none of our rear sway bars fit the Thor Outlaw models like you have.
view full answer... - Steering Stabilizer & Anti-Sway Bars for F-53-Based 2014 Fleetwood Bounder Class A MotorhomeFor your 2014 Fleetwood Bounder Class A motorhome that is based on the Ford F-53 with V10 engine you can use the Roadmaster rear Anti-Sway bar # 1139-144. For a front anti-sway bar you can use # RM-1139-148.
view full answer... - Recommended Sway Control Kit For 2007 Hurricane 33H On Ford F53 ChassisTo reduce the sway on your 2007 Hurricane I first recommend the Roadmaster Front Anti-Sway Bar, part # RM-1139-148. To get even more sway control you can use the Roadmaster Rear Anti-Sway Bar, part # 1139-144.
view full answer... - 2017 Newmar Canyon Star Ford F-53 Front and Rear Sway Bar RecommendationI did some digging on your 2017 Newmar Canyon Star built on a Ford F-53 chassis and it has a V10 engine and has a GVWR of 26k. So for sway bars that will fit and work well we have the # RM-1139-148 for a front sway bar that is confirmed as a fit and would work well and then for the rear # 1139-144. I attached install videos for you to check out as well. I am not sure which Blue Ox sway bars you tried to install, but these two will fit and work well.
view full answer... - How to Improve Ride Quality of 2014 Newmar Canyon Star Model 3950Your 2014 Newmar Canyon Star Model 3950 is built on a Ford F-53 chassis which is plagued with handling issues. The biggest improvement you can make is a rear sway bar. For that you would want the part # 1139-144. Next you would want to go with a front sway bar as that will make the next biggest improvement. For that you would want part # RM-1139-148. Between those two things and your Tiger Trac your ride quality should be very nice.
view full answer... - Ride Improvement Recommendations for 2014 Ford F-53 Chassis RVFord F-53 RVs are notorious for swaying. We have found that the best solution is an aftermarket rear sway bar. For that you would want the # 1139-144 which is a confirmed fit for your RV. Check out the install video I attached for more info. Next most effective solution is the front sway bar. If you wanted additional improvement after the rear bar a front bar like the part # RM-1139-148 would be exactly what you need.
view full answer... - Best Way to Figh Sway of 2007 Four Winds Hurricane MotorhomeYour 2007 Four Winds Hurricane is build on a Ford F-53 chassis which is notorious for roll and sway issues. The best thing you can do to help with this is a rear sway bar. The rear sway bars on the F-53 chassis make the biggest difference. For that you'd want the part # 1139-144 which is the correct fit for your motorhome. Next up will be a front sway bar which the correct fit is the part # RM-1139-148. These two together will fix any roll issues you are having.
view full answer... - Will Roadmaster Front Anti-Sway Bar Fit 2019 Thor Miramar 34.2 Class A Motorhome with F-53 ChassisYes, since your 2019 Thor Miramar 34.2 Motorhome is a Class A with the V10 and has a GVWR of 22,000 lbs the Roadmaster Front Anti-Sway Bar # RM-1139-148 will fit your motorhome. Attached are some videos and the installation instructions for you to reference.
view full answer... - Sway Bar Recommendation for 2015 Newmar Canyon Star Model 3610Your 2015 Newmar Canyon Star Model 3610 is built on a Ford F-53 chassis which is plagued with handling issues. The biggest improvement you can make is a rear sway bar. For that you would want the part # 1139-144. Next you would want to go with a front sway bar as that will make the next biggest improvement. For that you would want part # RM-1139-148.
view full answer... - Sway Bar Recommendations for 2017 Thor Challenger Ford F-53 MotorhomeThe Roadmaster swaybar part # RM-1139-148 is a confirmed fit for your 2017 Thor Challenger on an F-53 chassis. Then for the rear sway bar you would want the part # 1139-144 that you also referenced. These are both fits for the V10 models of the RV like yours as well as ones longer than 34 feet like yours. Sway bars are great options to improve the overall ride quality and driveablity of the F-53 chassis RVs. Typically people see the biggest improvement with the rear sway bar and next...
view full answer... - What Hardware is Included with the Roadmaster Front Anti-Sway BarAccording to the parts break down in the instructions for anti-sway bar # RM-1139-148 which I have linked for you, the parts included are as follows: 1 anti-sway bar 2 bushings 1 aqualube grease 2 U-clamp brackets 4 lock nuts 2 M12-1.5 x 45 cap screws 2 M12-1.5 x 90 cap screws 8 M12 flat washers It also includes the installation kit for the Ford F-53 chassis.
view full answer... - Do Anti-Sway Bars for a 2014 Ford F-53 Chassis Replace the Factory Sway BarsFor the 2014 Ford F-53 chassis the anti-sway bar # RM-1139-149 does not replace a factory sway bar. Anti-sway bar # RM-1139-148 is the only one that are replacements.
view full answer... - Recommended Front/Rear Sway Bars & Steering Stabilizer for 2017 Thor Hurricane 31s on Ford F-53For your Thor Hurricane Class A motorhome that is based on a 2017 Ford F-53 chassis we do have front and rear sway bars and a steering stabilizer that will help reduce some of the handling issues found when driving a large vehicle. According to the Thor specs your RV has a V10 engine. You did your homework. For a rear anti-sway bar you can indeed use Roadmaster part # RM-1139-143 which is appropriate for the 31-1/2-foot length of this RV. For a front bar use part # RM-1139-148 which works...
view full answer... - Front and rear sway bars for 2017 Forest River RVYour 2017 Forest River RV is likely to be built on a 2016 model year F-53 V10 chassis. For a 2016 F-53 chassis use Roadmaster rear anti-sway bar # RM-1139-143. The factory bar remains in place when you install this unit. This particular Roadmaster part also fits the 2017 F-53. For a front sway bar then you would want the part # RM-1139-148 which is a confirmed fit.
view full answer... - Sway Bar Recommendation for 2013 Coachmen Mirada V10 Ford F53 ChassisYour 2013 Coachmen Mirada is built on a Ford F-53 chassis so the Roadmaster sway bar part # RM-1139-148 that you referenced would be perfect. This is for V10 models with GVWR of less than 24k so it would work well. For a front sway bar then you would want the part # RM-1139-148. The rear bar will make the biggest difference but the front will also help quite a bit.
view full answer... - Sway Bar Recommendations for 2017 Thor Ace RV Ford F-53 ChassisThe sway bar you would need for the rear of a 2016 Ford F53 chassis is the part # RM-1139-143 since yours is under 34 feet in length. For the front sway bar you would want the part # RM-1139-148 which is a confirmed fit. I attached an install video for this for you to check out as well.
view full answer... - Recommended Stabilizers for Thor Windsport on Ford F-53 V10 ChassisFor a Thor Windsport based on a 2016 Ford F-53 V10 chassis the front-axle stabilizers we offer all require you to remove the factory sway bar. We have no front-axle kits that avoid this step. The Roadmaster # RM-1139-148 is the appropriate one for this chassis. The Roadmaster # RM-1139-149 add a second sway bar to the rear of your Windsport.
view full answer... - Torque Specs for Roadmaster Sway Bars # RM-1139-149 and # RM-1139-140If you check out the install instructions for both the Roadmaster Sway Bars part # RM-1139-149 and # RM-1139-148 all of the torque specs are listed for each step of the install. There are enough of them at various steps of the install that it would be easiest if you just view the install links to see each figure.
view full answer... - 2020 Thor Challenger 37FH Ford F-53 V10 24,000 GVWR Front and Rear Sway Bar UpgradesThe correct rear sway bar for your 2020 Thor Challenger 37FH Ford F-53 V10 24,000 GVWR is the Roadmaster part # RM-1139-149 and then for the front you'd want # RM-1139-148. We confirmed this with our contacts at Roadmaster. I attached install videos for both sway bars for you to check out as well.
view full answer... - Recommended Front and Rear Anti-Sway Bar for 2018 Thor Hurricane 29M RVYour 2018 Thor Hurricane 29M RV is built on the Ford F-53 Chassis. For the front of your motorhome, I recommend the Roadmaster Front Anti-Sway Bar # RM-1139-148 and for the rear you can use the Roadmaster Rear Anti-Sway Bar # RM-1139-146. When installed and used together, these will do a fantastic job of minimizing sway and driver fatigue by improving the stability and driveability of your RV. There is not a sway bar from Blue Ox currently available that will fit your RV chassis. If...
view full answer...
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Info for this part was:
Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Updated by:
Lindsey S
Updated by:
Shelly K
Updated by:
Wilson B
Updated by:
Matthew E
Updated by:
Isabelle B
Updated by:
Manda E
Installed by:
Jeff D
Video Edited:
Jacob T
Video Edited:
Kathleen M
Video Edited:
Dustin K
Video Edited:
Chris R
Written by:
Tammy D
Video by:
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Video by:
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Test Fit:
Shane H
Test Fit:
Robert C
Test Fit:
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