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

Roadmaster Front Anti-Sway Bar

Item # RM-1139-140
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Retail:$674.11
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Anti-Sway Bars

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Roadmaster Anti-Sway Bar - RM-1139-140
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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. Call 800-298-8924 to order Roadmaster anti-sway bars part number RM-1139-140 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Roadmaster Front Anti-Sway Bar. Anti-Sway Bars reviews from real customers.
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Roadmaster Anti-Sway Bars - RM-1139-140

  • Roadmaster
  • Anti-Sway Bar
  • 1-3/4 Inch Diameter
  • Front
  • 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 or bushing kit (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 front 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.



1139-140 Road Master Anti-Sway Bar - Front

Installation Details RM-1139-140 Installation instructions

This Product Fits The Following Vehicles




Video of Roadmaster Front Anti-Sway Bar

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Roadmaster Front Anti-Sway Bar Installation - 2017 Ford F-53

Speaker 1: Today on our 2017 motorhome on our F53 chassis, we're going to be taking a look at, and I'm going to show you how to install, the Roadmaster Front Anti-Sway Bar for Motorhomes, part number RM-1139-140.This is what our anti-sway bar looks like when it's installed. What this is going to do for you is exactly what the name of it is. It's going to reduce swaying. Because the vehicle is so heavy and so tall, when you're going down the highway, you get a crosswind, the top of the vehicle wants to lean. It wants to pull you. This is going to reduce that body roll and that sway.

It's also going to help driver fatigue, because we're not going to have to muscle the steering wheel as much to keep it on the road.The bar's going to be made out of a 4140 chromoly steel for superior strength. It's going to have a black powder coat finish. It's going to resist any rust or corrosion. This replaces your old sway bar, or factory sway bar. Now, keep in mind, this front anti-sway bar is only going to work on the front to stabilize the front.

If you want maximum stability, you're going to want to pick up a rear sway bar. Your front anti-sway bar is also going to come with poly bushings. They're going to be durable, and they're going to resist damage caused by oil and gas.As far as the installation goes, it is a fairly simple, straightforward installation. You can do it in about an hour or so. You're going to use existing factory hardware, mounting hardware, and it's going to go right in place.

You're not going to have to do any drilling or welding.Now that we've gone over some of the features, let me show you just how easy it is to get it installed. First thing we need to do to start our installation is we're going to loosen this nut and bolt that's holding the top part of our sway bar, or the end of our sway bar, in place. We're also going to be taking these off, but what we're going to do is we're just going to loosen these, so when we take these off, we're going to let it fall down, and let it rest on these.So, we're going to start with these. We're going to use a 15 mm wrench on the backside, an 18 mm socket on the nut. There's one.

We're going to have the same thing on the other side. Next, we're going to take a 15 mm socket, 18 mm wrench, and we're going to loosen these two bolts on both sides, so that we can let our sway bar swing down to the floor.Now, I'm going to have to remove my bottom one on this side, top one on the other, and remove the nut from the back side of each one. I'll just slide it out, like this, and put it down, just like that.The next thing we need to do is we need to prepare our new sway bar, or anti-sway bar. We're going to have some grease, and you're going to have two poly bushings. You're also going to have two brackets. Now, in the instructions, it tells you to use the old brackets to mount it back onto the axle. However, the old brackets are wider, and will not fit on the new bushing, so we're going to be using the new ones.What we're going to do is we're going to use this grease, and we're going to put it right on the inside of the bushing. We're just going to spread that out. The next thing we're going to do is we're going to put our poly bushings onto our bar. We're going to kind of match them up to where the other ones were. If you look at the old one, they're sitting about right here. I'll spread them apart like this, just like that. My bracket, push it over top of my bushing, on both sides.This is easier with two people. However, if you can get one side up, like this, get one of your bolts in. Again, we're going to use the same hardware. I'll get a nut on. Next, we'll go ahead and reinstall our hardware here. We're going to put our bolt through, flat washer, slide it through, on like this. Flat washer, and then the nut. We're going to do the same thing on the other side.Now I'll go ahead and tighten everything back down. Once you have all your hardware tightened back down, you'll want to take the vehicle for a test drive, and make sure everything is working properly. And then double check your hardware to make sure everything is still tight.That'll do it for the look at and installation on the Roadmaster Front Anti-Sway Bar for Motorhomes, part number RM-1139-140, on our 2017 motorhome on our F53 chassis.


Customer Reviews

Roadmaster Front Anti-Sway Bar - RM-1139-140

Average Customer Rating:  4.8 out of 5 stars   (403 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.

- RM-1139-140
by:
2015 Fleetwood Roadmaster

I purchased this kit and the Roadmaster rear anti-sway bar kit for installation on my 2015 Fleetwood Flair, 26-foot. Before purchasing, I called Roadmaster to make sure this kit could be installed on my small RV, as they make smaller kits for smaller RVs. They indicated it could be installed, and I'm glad I went with the heavier kit. The install took maybe an hour, with the only glitch being some difficulty getting the poly bushings and brackets over the new bar. I called Roadmaster, and the tech noted that the brackets DID look to small, but with some jiggling and finesse, the bolts should fit, and they did. My only irritation with this, and the rear anti-sway bar kit, is that the Roadmaster instructions do not provide ANY torque specifications for bolts to be replaced, either Ford F53, or kit specific, so be prepared to make some calls or go on an Internet search to find the right torque specs. 224319



- RM-1139-140
by:

This product did what it advertised it would do. For my motorhome it made the front end suspestabilizer that came with it.nsion work a lot better than the 428410



- RM-1139-140
by:

Good anti-sway bar. Installation was made difficult by being unable to easily remove the OEM anti-sway bar. Although this item was intended to go on a near-new 2015 motorhome, the original retaining bolts were very difficult to remove. However, installation of the RM 1139-140 was relatively easy and completed in about an hour by one person. If two people did the task, it could be done in half that time. The only disappointment, and it was significant, is that there was no mention of torque values for the mounting bolts. 223089


Comments
After a year of use over about 8,000 miles, I have to say the improvement they made are moderate at best even considering I put them on the front and back.
Vince L - 08/30/2016

20677

- RM-1139-140
by:
2017 Ford F-53

Have not installed this yet but etrailer service is excellent! I have probably placed 6 orders in the last couple of years and they have always exceeded my expectations. Send 'em you business! Great product selection, competitive prices, quick delivery and good tech backup. 469201



- RM-1139-140
by:
2013 Ford F-53

I received my order, but all the parts wasn't with it. All I got was the bar and the two bushing and brackets that mounts the bushing to the frame. All this came in one long box. According to the picture there are suppose to be more parts. I thought this is an expensive part for no more than I got with it. $ 600.00 for a bar really!! 211264



- RM-1139-140
by:
Winnebago Vista

I received my front anti sway bar (RM-1139-140) around noon on the day it was promised. The package was undamaged and all parts were contained within. After lunch I installed the bar in less than 30 minutes, which included the removal of the factory bar. I installed it by myself from the ground. Simple install although I did deviate some from the instructions to make it easier for me as the bar is heavy. Instructions say to attach the bar to the axle with the bushings and saddle clamps first, then bolt the endlinks. Instead I bolted the endlinks first then simply swung/rotated the bar to the axle and attached with the saddle clamps. I did not have to lift the heavy bar to the axle as the weight was already supported by the endlinks. Easier if doing the install alone in my opinion. About a week prior I had installed a Roadmaster Reflex Steering Stabilizer ( RSSA-RBK9). These 2 items greatly improved the steering and sway problems which were extremely bad in my 2013 Winnebago Vista 26HE. So bad that I considered the drive extremely stressful and dangerous. With these 2 parts added the drive is now 80 to 90 per cent improved. Very happy. 263320



- RM-1139-140
by:
Ford

I thank Cathy T great help she gave me. I installed the front and back anti sway bars on my 2016 George Town Motorhome. It has the ford f-53 chassis and a Dana 150 rear end. I use road master RM-1139-145 on the rear and RM-1139-140 on the front. Thanks to Cathy T she set me up with the right parts. I don't have any more body roll and the 18 wheelers bearly push me over now. If not at all. The front bar also cut down on wheel pounding. I have a much smother ride. I also have the road master reflex steering stabilizer Rm-BK9-RSSA. 293767



- RM-1139-140
by:
Ford

Winnebago vista 08. I believe this improvement was the least productive in improving my ford F53 chassis. My existing bar was already or close to the new bar diameter. The install was quick. Delivery was quick. Pricing was ok but they exceeded in having all three items for my rig. 406453



- RM-1139-140
by:

Combined with rear sway bar drives just as I had hoped 312489



- RM-1139-140
by:

Great customer service from purchase to delivery. Kept informed all the way by George with fast shipping. Sway bar was quick and easy to install on my 2018 Windsport, about 1 1/2 hours by myself. Considerably heavier than original, helps reduce sway as advertised. Great experience with company would purchase other items in future. 483047


Comments
Sway bars are still working great. Would not have another RV without them.
Thomas - 03/09/2019

50330

- RM-1139-140
by:
2007 Fleetwood Bounder

I love this sway bar! It has made driving my 33' Bounder much more enjoyable. It has helped with body roll and it even turns better. Now I'm thinking of getting the rear sway control. Thank You! 408360



- RM-1139-140
by:
Dodge Ram Pickup

Fit and finish are excellent, good work. This should minimize sway far better than the factory bar. I am hoping that it will handle more like a sports car or the 3500 RAM LONG HORN that it is replacing. 398607



- RM-1139-140
by:

Installed easily in about 30 minutes. I took it for a test drive in a 35mph crosswind and it seemed to handle great but I am anxious to take it on the freeway. My only suggestion is that Etrailer list measurements with the product description because the front sway bar that my motorhome called for didn't fit and I had to return it and get a different one. 359473



- RM-1139-140
by:

I ordered suspension upgrades for our motorhome. The price was the best I found. The ordering was fast and simple. The delivery was in two days. You can’t ask for better service than that. 740054



- RM-1139-140
by:
Winnebago

Improved the ride on my Winnebago 36’ class A gasser 732318



- RM-1139-140
by:
Roadmaster

I ordered the SumoSprings and Roadmaster Anti-sway bars front and rear. Install was straight forward and results were better that expected. 730748



- RM-1139-140
by:

Great product easy to install. Has helped my ride. 728770



- RM-1139-140
by:

Was ready to improve handling of my Class A. I was pleasantly surprised with the improved handling with front and rear sway bars, sumo springs and a steering stabilizer. 725084



- RM-1139-140
by:
2015 Tiffin Allegro Motorhome

I have a 2015 Tiffin 31 SA. I added Both front and rear Roadmaster sway bars. The difference was day and night the way the coach handled! I will ad that I also added Sumo springs front and back and also Steersafe. I ordered the sway bars on Sunday and they arrived Thur as promised undamaged. etrailer videos were a big timesaver as well as money. I installed the sway bars with the help of my 2 sons in less than 2 hours! I would not hesitate using etrailer in the future. 720499



- RM-1139-140
by:

Quick delivery and straightforward installation except I had a question regarding the mounting to the frame. There are 2 mounting holes, front & back. I was told by Etrailer to use the front hole, although several YouTube videos indicated the back hole provided better anti-sway. I still do not know which is correct and better for my needs. 719919



- RM-1139-140
by:

Roadmaster product bushing brackets are thin, flimsy, narrow and have large slots instead of round holes so the cheap brackets can slide under torsion. The bar was cheap and not nearly as well manufactured as the stock one. I didnt notice any difference in ride. E trailer service was great but this is not a quality product. Go for a steering stabilizer from [name brand] instead. 710906


Comments
Anti-sway bars and steering stabilizers are similar but are designed to correct different issues. Ive attached help articles that dive into these types of suspension enhancement.
-- Victoria B - 10/09/2019

62762

- RM-1139-140
by:

Fits as advertised and received packages before the original date. Have not driven yet to see what difference they make but this product makes sense. I also ordered and installed the rear anti-sway bar. No problem doing both. 710846



- RM-1139-140
by:

I ordered front and rear roadmaster sway bars, front and rear sumo springs and a Roadmaster steering stabilizer for my 2019 Winnebago Vista 29VE after I picked it up several weeks ago. The drive home was a nightmare trying to keep it on the road. I received all the parts in good shape except the rear sway bar came in with the package all beat up and only had the sway bar not any of the other needed brackets and bolts. I called etrailer and explained the situation, sent pictures of the box and they mailed ma a whole new set immediately not even waiting for UPS to pick up the original one. My son and I installed all of them in my driveway and what a difference! The RV is now sound going down the road even in cross winds and large trucks passing by. Thank you etrailer. 707190



- RM-1139-140
by:

Great product! greatly reduced driving fatigue on long road trips. 706906



- RM-1139-140
by:
1999 Ford F-53

Easy to install and seems to work well although i still have too much sway and will put on the recommended additional rear sway bar as well. 704524


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Show More Reviews

Ask the Experts about this Roadmaster Anti-Sway Bars

  • Sway Bar and Steering Stabilizer Recommendation for 2016 Ford F-53 to Improve Ride Quality
    The biggest ride improvement you'll make on the Ford F-53 is a rear sway bar. Next you'd want to do a front sway bar and then finally a steering stabilizer. Doing all three of those will make a night and day difference. For a rear sway bar you would want the part # RM-1139-149. For a front sway bar you then would want the part # RM-1139-140 and then steering stabilizer # RM-RBK4-RSSA. If you still want more at this point then Sumosprings would be the way to go. For that you would want...
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    There are a few anti-sway bar options for motor homes built on the 2016 Ford F-53 Chassis. For the rear on your motor home I recommend anti-sway bar # RM-1139-149 which is for models rated for 24,000 pounds gross vehicle weight. For this model, check to ensure there is enough factory u-bolt available to accommodate the factory nut, washer and 1/2" plate. If the u-bolts are not long enough, the # RM-590050-00 u-bolt replacement kit is needed; sold separately. If your motor home has...
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    Your 2011 Winniebago Vista 26P is built on a Ford F-53 chassis which unfortunately has a reputation as not being the most pleasant to drive. Since you already have a rear sway bar the next you will want to replace the front sway bar. For that you would want the part # RM-1139-140 which is a confirmed fit. This will minimize sway and driver fatigue by improving the stability and driveability of your vehicle. Body roll will be greatly improved too. Then for a steering stabilizer you...
    view full answer...
  • Rear Anti-Sway Bar for a 2013 Tiffin Allegro 31sa Motorhome on a Ford F-53 Chassis
    For the Ford F-53 chassis you would use Roadmaster anti-sway bar # RM-1139-145. I have included a link to the installation instructions for you. If your motorhome is more than 33 feet long then you can use # 1139-144. The bar diameter on it is 1-3/4 inches as opposed to the factory 1-1/2 inch sway bar. I have also included a link to our FAQ article on stability control for heavy duty vehicles like yours.
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  • Rear Sway Bar that Fit 2016 Thor ACE 30.1 16k-18k on Ford F-53 Chassis
    The best modification you can make to the Ford F-53 chassis is actually a rear sway bar like the part # RM-1139-140 that would fit your 2016 Thor ACE 30.1 16k-18k.
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  • Rear Sway Bar Recommendation for 2016 Ford F53 Thor ACE 27.2
    If you wanted to just install a rear sway bar on your 2016 Ford F53 Thor ACE 27.2 you certainly could do that with the part # RM-1139-146. We often recommend people first install a rear sway bar since it will make the biggest improvement and if they want more stability to then go with a new front sway bar. For that part # RM-1139-140 is what you need.
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  • Sway Bar Recommendation for 2013 Coachmen Mirada V10 Ford F53 Chassis
    Your 2013 Coachmen Mirada is built on a Ford F-53 chassis so the Roadmaster sway bar part # RM-1139-140 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-1139-140. The rear bar will make the biggest difference but the front will also help quite a bit.
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  • Suspension Enhancement for 2015 Thor Four Winds E450 C-Class Motor Home
    For your 2015 Thor Four Winds E450 C-Class built on a Ford E-series chassis we do offer front suspension enhancement kits. These are rubber jounce springs (no air bags are available) or sway bar type items. The links provided will let you see both types of products whose fits vary based on your GVWR and other factors. For example, for front jounce springs use either kit # SSF-106-40 (medium duty) or # SSF-106-47 (heavy duty).
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  • Recommended Anti-Sway And Axle Stabilizer For 2015 Winnebago On Ford F-53 Chassis
    The products like air bags, anti-sway bars, and axle stabilizers are used for different problems you may have when driving your 2015 Winnebago. I recommend anti-sway and axle stabilizers to improve overall handling for your motorhome. If you are feeling body roll when cornering, and need to improve the handling of your motorhome, I recommend an anti-sway system like part # RM-1139-140. If it feels like you have loose steering or you are feeling vibration, then I also recommend an...
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  • Front and Rear Anti-Sway Bars for 2018 Thor Miramar 34.2 on Ford F-53 V10 Chassis
    The Thor Miramar 34.2 motor coach is based on the Ford F-53 with 6.8L Triton V10. For this coach you can use Roadmaster front sway bar # RM-1139-140 and rear sway bar # RM-1139-149. For the rear sway bar kit # RM-1139-149 you will need the longer u-bolt kit # RM-590050-00 if the factory bolts do not have enough space remaining to fit the factory nut, washer and 1/2-inch plate. Written instructions and videos are linked.
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  • Best Modifications to Improve Ride Quality of 2017 Ford F-53 Winnebago Vista 29VE
    For reduction in sway and improvement in ride quality the best modification you can make is a rear sway bar like the part # RM-1139-145. Next in line is a front sway bar like part # RM-1139-140 followed by a steering stabilizer like part # RM-RBK4-RSSA. If you do all three of these your ride quality will be improved greatly.
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  • Recommended Front and Rear Sway Bars for 2017 Thor A.C.E. RV
    You are correct that the F-53 chassis like what you have on your 2017 Thor A.C.E. RV is known for having some sway issues on the road. This can be greatly improved by adding a front and rear anti-sway bar to the chassis which will help to balance weight transfer and reduce body roll. For your Thor A.C.E. I recommend the Roadmaster Anti-Sway Bar # RM-1139-146 for the rear axle and the Roadmaster Anti-Sway Bar # RM-1139-140 for the front. I have attached a couple installation videos that...
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Info for this part was:

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Written by:
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Jeff D
Video Edited:
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