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

Roadmaster Front Anti-Sway Bar - 1-3/4" Diameter

Item # RM-1139-148
Our Price: $556.45
Anti-Sway Bars

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Shipping Weight: 61 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 front 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-1139-148 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Front Anti-Sway Bar - 1-3/4" Diameter. Anti-Sway Bars reviews from real customers.
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Roadmaster Anti-Sway Bars - RM-1139-148

  • Anti-Sway Bar
  • Roadmaster
  • Front
  • 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


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.



1139-148 Road Master Anti-Sway Bar - Front

Replaces Roadmaster 1139-140 and 1139-206

Installation Details RM-1139-148 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Roadmaster Front Anti-Sway Bar - 1-3/4" Diameter - RM-1139-148

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 front axle and to the frame to balance weight transfer and reduce body roll.

by:

Item shipped quickly and the installation was fairly easy in my opinion. Have not been able to drive the RV yet but I'm sure this upgrade will improve the handling.

Lawrence W.

4/28/2024

It is working as advertised. My 26k F53 chassis doesnt rock or sway as much as it did with the manufacturer anti-sway bar. Definitely beefier and easy to install



by:

The antisway bar was a great investment. Between Etrailer'S videos and the packaged instructions, the installation was straight forward. Great product.



by:

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:

I'm glad i put the front anti-sway bar on. It does make driving easier.



by:
Ford

The older Southwind on a Ford chassis is nearly undriveable with OEM STAB BAR. Your bar alleviated my sway problem.



by:
2018 Thor ACE Motorhome

The anti sway bar showed up in a week, instructions were good. It was harder to get the old sway bar out than installing the new bar.



by:
2018 Ford F-53

complete package of needed parts with very concise installation instructions
very good quality of the parts themselves and they will be more than adequate for the job they will perform THANKS.



by:
2013 Ford F-53

Great company to deal with, sway bar & steering stabilizer look well built will be installing in a couple months



by:

Had this installed along with a rear 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:

The group at etrailer are absolutely great. UPS lost my order out of the box and delivered me an empty box. Called in to etrailer and they took care of the claim with UPS empty box was delivered on Wednesday I had a replacement on Saturday. Totally a five star service



by:

Best thing I have done to improve the driving and handling of our RV. Thanks to ETRAILER for helping me get the right parts and their professional support helping me return the wrong part I ordered.



by:

again my parts came so fast and ahead of time ETrailer is the best place to get your stuff and their 100% Pros and easy to talk to and deal with.... !!

Greg

8/30/2023

Simply amazing



by:

Truly an improvement especially cornering. My Class A F 53 chassis suffered in strong winds and the sway bar helped in these situations as well.



by:

needed to replace front anti sway bar on my 2004 Class A RV. not stiff enough. Long story short, folks at etailer fulfilled all aspects of ordering and shipping as they said. Very, very pleased with them and their product. Highly recommend.



by:

Works great on my 2019 Thor Windsport 34j. Improved handling.



by:

Everything fix correctly but when called in too you I was told that you didn’t have a sway bar that fit my motorhome I took it on my own and order it and it fit great Thank you



by:
Roadmaster

I love both of the Roadmaster anti-sway bars I had installed right before a trip to Iowa. I purchased bushing kits for front and rear but, I didn't know the front sway bar came with new bushings. So I have an extra front sway bar bushing kit. The biggest difference I noticed right away was the handling on the highway. The people I talked to at etrailer were very helpful and always are when I call. Thanks



by:

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:

Installed as described



by:

The Anti-Sway bar is a positive improvement. The coach still needs additional handling improvements but, no motorhome will handle like a car or pickup.



by:
2013 Ford F-53

Quality product. Packaged exceptionally good and protective.
I have bought several great Roadmaster items from etrailer and it has always arrived on time. This order came a day early.
Very happy.



by:

It made a great improvement to our motor home while driving down the highway. Very happy with the purchase



by:

Definitely a big difference in the drive! I was expecting longer bolts that hold the sway bar.



by:

Best upgrade for a class A motorhome!

Joel

6/24/2023

Still great but have had a four point Liquid Springs system to the suspension.



by:

This sway bar was a priceless purchase! Easy driving now!


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Show More Reviews

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

  • Help Controlling Body Sway as a Motorhome Travels Down the Highway
    One of the biggest complaints the motorhome owner's have is controlling body sway. There are a couple of things that you can do that might help decrease the body sway the you are experiencing. First, installing an Anti-Sway Bars, like the Roadmaster Rear Anti-Sway Bar # RM-1139-143 and the front sway bar # RM-1139-148. Installing anti-sway bars will help minimize the side-to-side and will allow your motorhome to keep an level ride. Next, installing a suspension enhancement system, like...
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  • Suspension Enhancement To Reduce Body Roll/Sway On a 2014 Forest River Georgetown Ford F-53 20,500LB
    To help reduce the body roll on your 2014 Forest River Georgetown motorhome on the Ford F-53 20,500lb chassis I recommend starting with the Roadmaster Rear Anti-Sway Bar # RM-1139-145. This will add a 2nd stronger rear sway bar to your Georgetown to greatly reduce body roll. You can also add the SumoSprings Maxim Custom Helper Springs # SSR-187-54-1 with the sway bar to improve the rear stability further. Currently SuperSprings does not offer an option like the Suspension Stabilizer # SSA25...
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  • Best Way to Improve Ride Quality and Stability of 2018 Thor Hurricane Motorhome
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  • Front and Rear Anti-Sway Bar Recommendations for a 2014 Fleetwood Bounder 35K Ford V10
    The 2014 Fleetwood Bounder 35K was built on a Ford F-53 Chassis, so you could use the Roadmaster Rear Anti-Sway Bar, # RM-1139-149, that you referenced. For the front sway bar, you can use part # RM-1139-148. If you find that the factory u-bolts are not long enough when installing the rear sway bar, you can purchase the Roadmaster Extended U-Bolt Kit, # RM-590050-00.
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  • Steering Stabilizer and Front and Rear Anti-Sway Bars for 2015 Forest River Georgetown Motorhome
    From my research your 2015 Forest River Georgetown is built on a Ford F-53 chassis and has a maximum GVWR of 22,000 pounds. At that weight, as long as you have the V10 model, you have the correct parts: Front Anti-Sway Bar # RM-1139-148 Rear Anti-Sway Bar # RM-1139-145 Reflex Steering Stabilizer with Brackets # RM-RBK22-RSSA
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    To help reduce side-to-side sway front and rear anti-sway bars would make a night and day difference. For your 2019 Thor A.C.E 30.4 on a Ford F53 chassis you'll need the Roadmaster Front Anti-Sway Bar # RM-1139-148 and Roadmaster Rear Anti-Sway Bar # RM-1139-146. I've attached a couple of videos below where I'll walk you though the installation. From there you can then start looking into suspension enhancement to help with sag and provide a bit more support to prevent swaying. Personally,...
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    For SumoSprings, or any other option, I recommend starting with the rear first. This will make the biggest impact. For your 2019 Coachmen Mirada 350S you will need the # SSR-180-54-1. SumoSprings are always a great choice for suspension enhancement. These will help combat sway while also absorbing bumps and shocks to smooth out your ride. Adding the front # SSF-170-40-2 as well is definitely a good idea for a motorhome. If sway alone is your main concern, the only thing that would be...
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  • Best Way to Improve the Ride Quality and Handling of 2014 Fleetwood Bounder
    The biggest improvement you can make to your 2014 Fleetwood Bounder in terms of ride quality, stability, and sway reduction would be with a rear sway bar upgrade part # RM-1139-149. The next biggest improvement comes with a front sway bar with part # RM-1139-148 which is a confirmed fit as well. With both of these installed you'd have a drastically better driving experience that won't have the issues you mentioned when getting passed by semi trucks.
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    The correct steering stabilizer for the 2017 Winnebago Sightseer 36Z on a Ford F53 chassis is the Roadmaster Exact Center # RM42RR. If interested in other suspension enhancements, the Roadmaster Front Anti-Sway Bar, # RM-1139-148 is a highly recommended addition to your Ford F-53 Chassis. 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...
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  • Best Way to Figh Sway of 2007 Four Winds Hurricane Motorhome
    Your 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.
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    Your 2005 Fleetwood Flair is built on the very popular Ford F-53 chassis. Sway bars do help this chassis tremendously. The rear bar making the biggest improvement. For that you would want the part # RM-1139-143 which is a confirmed fit. Then for the front part # RM-1139-148 which will also make a noticeable improvement.
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    Adding the steering stabilizer and the front sway bar is definitely the first couple of steps that you want to take to help stabilize your motorhome. If you haven't already picked one out I recommend going with the Roadmaster # RM-1139-148 which is confirmed to fit a 2015 Ford F-53. Although air bags like the Air Lift LoadLifter 5000 Air Helper Springs # AL57240 would help to support the suspension and ultimately your ride, I recommend going with the SumoSprings as they require no maintenance....
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  • Troubleshooting Clunking Sound After Install of Roadmaster Sway Bar Motorhome
    Roadmaster doesn't list torque specs for the sway bar part # RM-1139-148 that you referenced but I do believe your issue is due the way the hardware was torqued down. What most likely went wrong was that you didn't tighten the hardware with the weight of the RV fully on the suspension and instead it was jacked up in the air when the hardware was torqued. So I would recommend loosening the hardware and then with the weight of the motorhome fully on the suspension try again and you should...
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    Your 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.
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  • Troubleshooting A Roadmaster Anti-Sway Bar Installation On A 2014 Winnebago Vista Motorhome
    The Roadmaster Front Anti-Sway Bar # RM-1139-148 uses a 1/2-13 x 2” grade 8 bolt for the front brackets. I have in the past ran into this issue before but it's not very common so I would just run to your local hardware store and get some 1/2-13 x 3" grade 8 bolts to complete the installation.
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  • Sway Bar and Stabilizer Recommendation for a 2004 Monaco Monarch to Prevent Wander and Sway
    The front sway bar you bought for your 2004 Ford F-53 is a great place to start to improve the handling and sway of your 2004 31 foot Monaco Monarch. But if your shocks are bad it won't compensate for that. Typically the best way to combat an RV that wants to wander as you are driving is a steering stabilizer like the part # RM-RBK4-RSSA which is a confirmed fit. For body roll and sway a rear sway bar will make the most difference. Roadmaster recommends this as the first line of defense...
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  • Recommended Steering Stabilizer and Anti-Sway Bars For 2017 F53 26000lb Chassis Motorhome
    I reached out to my contact at Roadmaster and confirmed the parts that will fit your 2017 F53 26000lb chassis. My recommendation for a steering stabilizer is the Roadmaster Reflex Steering Stabilizer with Mounting Brackets for Class A Motor Homes, # RM-RBK22-RSSA. This stabilizer will help keep your steering in line by constantly working a sturdy steel spring to maintain its position. It will minimize wander and correct oversteering. You may also be interested in anti-sway for your...
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  • Sway Bars and Steering Stabilizer Recommendation for 2018 Thor Hurricane Ford F-53
    Your 2018 Thor Hurricane is built on a 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 if your Hurricane is a 27B, 29M, 31S, or 31Z. If you have the higher rated 34J, 34P, 35M, or 34R you'd need the # RM-1139-149 for the rear and the same # RM-1139-148 mentioned earlier for the front. For a steering stabilizer for either you'd want the part # RM-RBK4-RSSA. When...
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  • 2008 Fleetwood Bounder 35 ft F53 V10 Suspension Upgrade Recommendations
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    view full answer...


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