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

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

  • 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 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 - 2016 Fleetwood Bounder Motorhome

Speaker 1: Today on our 2016 Fleetwood Bounder, we're going to take a look at, and also show you how to install the Roadmaster front anti-sway bar, part number is RM-1139-140.All right, guys, we're going to talk just a little bit about the importance of this sway bar, why it would be important to put on your motor home. When the chassis comes out of the factory, it has a sway bar installed. We'll show you how to remove that in a little while, but it's just a standard sway bar. There's nothing special about it, and that's meant to work for most of the light duty and the medium duty applications that this chassis is going to be asked to do. Once these show up at the facility where they actually are going to make the motor home, they're adding a lot of weight onto that chassis, and it's kind of top heavy. Not all the weight's down on the bottom, so you're having a lot of weight that's up higher, and that creates what's called body roll.

The top of your RV is going to sway side to side. If you spent much time behind one of these style of RVs, you've experienced it and you know what we're talking about.What we're able to do is take that standard smaller diameter, lower quality material sway bar out, and very quickly, even in your driveway, this is a very simple installation process to do, switch this out and replacing it with something's that's more in line with the weight's you're asking it to take care of. The sway bar has two connection points to our frame. You can see we're going to go from here, to our frame here, and then on this side it goes from here to our frame here.Basically what happens, say you're going on a right-hand corner. As you make that corner, the RV wants to tilt at the top to the left.

As that does, the frame comes down. That pushes force down through this end link into the sway bar, which is then going to force this down a little bit. Since we have the connection point with our sway bar to the other side, as this comes down it also wants to pull that side down. As your RV wants to tip at the top, this is designed to counteract that force, and pull that opposite side back down. It really helps out in the maneuvering.

It helps out a lot with crosswinds. It helps out a lot, especially on curvy roads and things like that. Any time there's a sideward force, like a crosswind or a passing 18 wheeler that would shift our RV side to side, this counteracts that, keeps everything nice, flat and level. Essentially it's going to make your RV easier to drive, more comfortable to drive, and you're not going to experience quite so much driver fatigue when you get to your end destination.Here's a good comparison between our factory sway bar, which we have here, and our upgraded Roadmaster sway bar that we have here. Visually, there's a pretty good size difference.

The Roadmaster sway bar is 1 3/4 inch. The factory sway bar is going to be 1 1/2 inch. Now, something that you can't really tell visually, but the materials, or the construction is different as well. With out factory sway bar, typically these are made out of just a standard 10/20 steel, whereas with the Roadmaster sway bar we've got a 41/40 chrome alloy blend. This is going to add superior strength and durability to the system. Makes it more rigid, so we're not going to have as much flex. Also in our brackets, the saddle brackets that are going to hold the sway bar to our vehicle, you can see we've got a pretty good difference here. The brackets are going to be very similar. They're going to work the same. THere's not a big difference there. But our bushings make all the difference in the world, here.The factory sway bar has this black, smaller bushing. This is rubber, so over time this is going to get hard, this is going to get brittle, and eventually will become oblong and will really lose a lot of the performance that our sway bar had. With the new sway bar, we're going to have polyurethane bushings. Now, these bushings are much more durable than rubber. They don't wear out over time. We're not going to have that elongation which allows our sway bar to move. These are designed to last an extremely long time, and give us superior performance because while they are still flexible, they're not nearly as flexible as the rubber, so it's going to give us a more rigid system, which is going to allow our sway bar to do its job more efficiently.Now, let's take a look at our sway bar in action. We'll start with our factory sway bar. You can see as we make our left and right turns, it's doing its job in helping to keep things level, but you can see the flex that's in it. Once we move to our Roadmaster sway bar and take a look at that, you're going to notice a difference. It's stiffer and it's holding our RV more level as we travel.To begin our installation process, we need to get the old sway bar out of the way. Our new one's going to be a direct replacement for this. We've got four bolts that are going to hold it to the axle here. To remove it, we're going to need a 15 millimeter socket for our bolt size here, and then for the nut you'll want an 18 millimeter wrench so you can get in there and get on it. We'll pull those out. I think it's a good idea just to put one in, very loosely started, there on the bottom that way when we take the rest out we won't have to worry about it coming down until we're ready for it. We'll do the same thing over on the passenger's side here.Once we have those out, and two supporting it, like we said, we're going to move on to our end link bolts here. We've got a nut here. This also needs an 18 millimeter, and the bolt will still us a 15. You can see these washers. There's one on each side of our end link there. We want to be sure that we hang onto those. I'll put this out and you can kind of see it. Hang onto those, we're going to reuse those. All right, now we'll finish taking our nuts off of each side, and we'll get our sway bar down and out of the way.To prepare our new sway bar to go up in position, we need to get our bushings lubricated. They've provided some grease for us to do that with, and this just helps prevent any squeaking. This is some pretty sticky stuff, so try not to get it on you. We're just going to completely coat the inside of that bushing, all the way around from one side to the there. We're going to do that on both of them. Now we can get these installed around our sway bar. You can see that little gap there allows to separate it around. We want these to be pretty close to the position they we're on our old sway bar.Now, we're ready to get our sway bar lifted up in position. We'll put the new saddles around the brackets, and at all four locations where we removed the old bolt, we'll have our bolt and flat washer going through our bracket, and when it comes out we'll put on another flat washer and nut. That's going to be at all four locations using our new hardware. Once we have those holes aligned we'll place through the bolt like we talked about, flat washer on the backside, and then a nut. It's a good idea to have an extra set of hands, as well, to help you hold this up here. We'll do the same thing on the bottom. Now I'm going to tighten these bolts down a little bit, not to where they're all the way snug, though. I still want some adjustment room up and down.You'll notice the weight of the sway bar is pushing our bracket down. You can see that oblong hole showing on the bottom. I like to push that up enough to where we kind of have that right in the middle, and then get it secured. Now I'm going to use just a little bit of this lubricant on each of our end links there. You've got some left over, so it's not a bad idea. Now we're ready to rotate our sway bar up into position, so we'll get our bolts started. We'll place, remember those are our factory washers, and we'll place one of those on. We'll bring the bolt right through the end link. Place another washer on, and the nylon lock nut. We'll do the same thing over on the driver's side. Now we'll just run these down, just to where the nut makes contact with our washers, and we'll take care of getting everything torqued properly.For our end link attachment point, you want to tighten them down, and you're going to feel the washers make contact with that metal spacer that was in the end link. You really don't need to go any tighter than that. You just want to take all the play out of your nylon lock nut and keep that from ever backing out. We'll move on to our saddle bolts here and get those torqued.With everything tightened down properly, that completes our installation of the Roadmaster front anti-sway bar, part number RM-1139-140 on our 2016 Fleetwood Bounder.


Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (438 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:

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



- 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:

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:

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:
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:
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:
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:
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:
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:
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:

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:

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:

Great experience to this point! I was hesitant to order the parts online but was very surprised and happy that I did. A very nice young lady answered my call and she was cheerful and knowledgeable about the products. In short, she was great! My product arrived on time and I was able to easily track its location as it moved across the country since they had provided me an easy online method. I’m excited to install the Steering Stabilizer and front and rear Anti sway bars. Thank you etrailer and Odelia for your wonderful service! 774089



- RM-1139-140
by:

I've read many reviews about the anti-sway bar and decided to give it a try. One of the nice things about this model is that the original anti-sway bar that came with the chassis remains installed. This new model is quite a bit "beefier" than the original so by having both attached, it has really improved the handling of our motorhome. 772419



- RM-1139-140
by:

Great product, great company. Dealing with Etrailer was a joy. The site was very easy to use and to find the right part that fit the chassis of my new to me RV. It was very easy to order and even with the free shipping, it came in 2 days. I, unfortunately, ordered it without looking to see if this modification was already done and it was so I had to return the product but I did see the sway bar and it was as solid and heavy as it says it is. There is no doubt that this bar would make a huge improvement if installed. 766975



- RM-1139-140
by:

I installed the front sway bar and noticed a big improvement. over the winter I also purchased the rear sway bar and had a [truck dealer] install the device. Though driving a 36 foot motorhome on a windy day still sways but what a difference in handling. Glad I have both installed.. 765458



- RM-1139-140
by:

Excellent product, excellent service! 764286



- RM-1139-140
by:
Roadmaster

This is a great product! We installed this additional sway bar along with the Roadmaster front end replacement sway bar at the same time, so we don't know which made the most difference. Together they substantially improved the stability and ride on our 2014 F53 chassis. Looking back, I wish I had made these improvements years earlier. If we upgrade to a newer F53 based motorhome, these will be an automatic upgrade. 764013



- RM-1139-140
by:

What a difference! Went from white knuckles high stress driving to no stress one handed driving ( but don’t). Great investment for F53 chassis's. 761745



- 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


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Show More Reviews

Ask the Experts about this Roadmaster Anti-Sway Bars

  • Sway Bars and SumoSprings for 2018 Winnebago 26 Intent Ford F-53 Chassis
    The general consensus with the Airtabs is that they are more of a gimmick than anything else. I would not recommend them for you. If you've already installed the Roadmaster sway bars part # RM-1139-146 and # RM-1139-140 as well as a steering stabilizer the next thing I'd recommend is SumoSprings # SSF-170-40-2 for the front and # SSR-184-40-1 for the rear and you'll have your motorhome handling very nicely.
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  • Sway Bar Recommendation for 2018 Winnebago 26 Intent to Improve Ride Quality
    Your 2018 Winnebago 26 Intent is built on a Ford F-53 chassis that is somewhat notorious for being hard to handle on the highway. The biggest improvement you'll make is with a new rear sway bar. Which for that you'd want the Roadmaster bar part # RM-1139-146 which is a confirmed fit. Next biggest improvement is with a front sway bar which the part # RM-1139-140 you referenced is the correct fit. With these two bars and your current stabilizer you'll have a much better ride quality.
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  • Recommended Sway Bar Upgrade for 2017 Jayco Precept on Ford F-53 Chassis
    The Roadmaster Front Anti-Sway Bar # RM-1139-140, which is confirmed to fit the F-53 chassis that your Jayco Precept is built on, features the same 1-3/4 inch diameter as the existing Hellwig Sway Bar that you have installed. The Roadmaster model is a great sway bar, but it is unlikely to provide much improvement over the already upgraded Hellwig unit on your Jayco RV. For this reason, I do recommend looking at adding a rear anti-sway bar. A rear sway bar will actually make the most...
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    According to what I was able to find, the 2019 Tiffin Open Road Allegro is manufactured on a Ford F-53 Chassis. The exact sway bar you need will depend on the GVWR of your motorhome, which should be mentioned on the manufacturer's ID plate along with the VIN and other important information. For 15,700 lb, 18,000 GVWR models less than 34 feet long, use # RM-1139-146 which would install in conjunction with the existing sway bar. For 22,000, 24,000 or 26,000 lbs, use # RM-1139-149. The...
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  • Recommended Front and Rear Anti-Sway Bar for 2018 Thor Hurricane 29M RV
    Your 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-1139-140 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. I...
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  • Front and Rear Sway Bars Needed for a 2012 Winnebago 37F on a 2011 Ford F-53 Chassis
    You are correct in that you will want to be looking at fits for the 2011 Ford F-53 chassis as opposed to the 2012 year. For your Class A motorhome with a V10 you will want to use the Roadmaster Front Anti-Sway Bar # RM-1139-140 which is 1-3/4" in diameter, and the Roadmaster Rear Anti-Sway Bar # RM-1139-149 which is 1-5/8" in diameter. Since your motorhome is rated for 24,000 lbs the bar with the 1-5/8" diameter will work great. Please note that you will want to check to ensure there...
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  • Front and Rear Sway Bar Recommendation for 2018 Thor Windsport 22k Chassis
    SInce your 2018 Thor Windsport is built on a Ford F-53 chassis the correct front sway bar is the part # RM-1139-140 since you said you have a 22k chassis and then for the rear # RM-1139-149. I attached install videos for both sway bars for you to check out as well. For a steering stabilizer you'd want the part # RM-RBK4-RSSA. For rear SumoSprings you'd want the part # SSR-187-54-1 and then for front # SSF-170-40-2.
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  • Sway Bars and Steering Stabilizer for 2015 Thor Windsport 32N on Ford F-53 V10 Chassis
    We can help you with handling enhancement kits for your 2015 Ford F-53 V10 motorhome chassis which is rated for a GVWR of 20,500-lbs. The front and rear sway bars and the steering stabilizer together will make a dramatic improvement in the coach's drive-ability. For a front sway bar you need Roadmaster kit # RM-1139-140. For a rear sway bar use kit # RM-1139-145. Both are appropriately rated for your Thor's GVWR. Installation videos for each kit are linked for your reference.
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  • Why Does Rear Sway Bar Replacement of Motorhome Help Ride More than Front Sway Bar
    The front of motorhomes are pretty standard for the chassis designers. Since most of the weight of the motorhome body will end up on the rear axle it's harder for chassis manufacturers to anticipate how to build the rear sway bars. We've found that by tightening up the rear of the vehicle with an aftermarket sway bar like the # RM-1139-149 the biggest improvement is made. Front bars like the part # RM-1139-140 do help but it's not as drastic of a difference.
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  • 2018 Thor ACE 29.4 Front Sway Bar and Steering Stabilizer Recommendation
    The next biggest improvement you'll make is with a front sway bar. For that the correct fit is the Roadmaster part # RM-1139-140. Then after that will be a steering stabilizer. For that you'd want the part # RM-RBK22-RSSA. With these two additional modifications your motorhome will handle really well. I think you'll be very happy once it's all installed! I attached install video links for the products on this page as well.
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  • Recommended Stabilization Parts for 2009 Winnbago WFE26P with Workhorse W-Series Chassis
    For your Winnebago with the workhorse chassis, you will want the Roadmaster Rear Anti-Sway Bar for Motor Homes # RM-1259-108. This anti-sway will be most effective in diminishing the effects of crosswinds, passing motorists and shifting cargo. Then for the front, you have two options. One is the anti-sway bar # RM-1259-105 and the other is the same bar but also with the axle trac bar for added stability # RM-1259-106. Finally, you may also be interested in the Roadmaster Reflex...
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  • Front and Rear Sway Bar Recommendation for 2014 Winnebago Vista 27N Built on Ford F-53 Chassis
    For a rear sway bar for your Winnebago Vista 27N built on a 2014 Ford F-53 chassis and has an 18k GVWR the correct sway bar is the part # RM-1139-146 for the rear and then part # RM-1139-140 for the front. I attached install videos for both for you to check out as well.
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  • Front Anti-Sway Bar for 2017 Ford F-53 Chassis With 18,000 lb GVWR
    I checked with Roadmaster and the Roadmaster Front Anti-Sway Bar for Motorhomes # RM-1139-140 is a fit for a Class A 2017 Ford F-53 chassis with a 18,000 lb GVWR and V8 or V10 engine. It will work as a direct replacement for the sway bar currently on your rig. I have added links to video reviews for you to check out as well.
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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-1139-140 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-1139-140 mentioned earlier for the front. For a steering stabilizer for either you'd want the part...
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  • 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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  • Correct Roadmaster Sway Bars for 2015 Thor ACE 27.1 Motorhome
    Based on my research your 2015 Thor ACE 27.1 is built on the Ford F-53 chassis. I checked with Roadmaster and for your Thor ACE that features a GVWR of 16,000 pounds the correct sway bars are indeed the part # RM-1139-140 for the front axle and # RM-1139-146 for the rear axle. Both of these components will do an excellent job of keeping the RV in line during travel and just improving the overall driving experience on the road by adding stability and control. I have attached a couple...
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  • Front and Rear Sway Bar Recommendations for a 2018 Forest River FR3 30DS with an F-53 Chassis
    For the front anti-sway bar on your 2018 Forest River FR3 30DS with an F-53 chassis you need the Roadmaster part # RM-1139-140. The rear anti-sway bar is the Roadmaster part # RM-1139-149. You do need to 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 then the Extended U-Bolt Kit # RM-590050-00 is needed. If you don't have at least 3 threads showing on your factory u-bolts after adding...
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  • Recommended Handling Enhancement Kits for F-53 Based Four winds Hurricane 34B Class A Motorhome
    In general it is best to start anti-sway efforts at the front of the motorhome, to prevent such handling issues from then rolling through the entire vehicle. For a front anti-sway bar I suggest Roadmaster's # RM-1139-140 which works on both V8 and V10 models. This no-drill install replaces the OEM sway bar with a beefy 1-3/4-inch-diameter 4140 chromoly steel bar that includes polyurethane bushings that last a long time. This will usefully stiffen the front end response. Next up in...
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  • Anti-Sway Bars for a Motor Home Built on a 2016 Ford F-53 Chassis
    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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  • Torque Specs for Roadmaster Front Sway Bar # RM-1139-140 and Rear Sway Bar # RM-1139-146
    I reached out to my contact at Roadmaster and he said for the Front Anti-Sway Bar # RM-1139-140 there aren't any specific torque specs that need to be followed during installation. My contact said that with this particular unit he recommends simply using a 1/2 inch ratchet drive and as soon as you get the bolts tight, go another 1/4 turn and you're good to go. For the Rear Anti-Sway Bar # RM-1139-146 there are torque specs that need to be followed. I have attached an image from the...
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  • 2008 Fleetwood Bounder 35 ft F53 V10 Suspension Upgrade Recommendations
    We recommend first starting with a rear sway for improving the stability of an RV like yours. For your 2008 Ford F-53 with a V10 that is 35 feet long you would want the # 1139-144. Next you would want to replace the front sway with the # RM-1139-140. Finally the last thing would be a steering stabilizer part # RM-RBK22-RSSA.
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  • Front Sway Bar and Steering Stabilizer Recommendation for 2011 Winnebago Vista 26P
    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...
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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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  • 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-1139-140 Rear Anti-Sway Bar # RM-1139-145 Reflex Steering Stabilizer with Brackets # RM-RBK22-RSSA You can find the pricing on each product page.
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  • 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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  • 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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  • 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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Info for this part was:

Expert Research:
Jackie C
Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Written by:
Lindsey S
Installed by:
Jeff D
Video Edited:
Joshua S
Video Edited:
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Dustin K
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Chris R
Video by:
Kathleen M
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Test Fit:
Randy B
Test Fit:
Andrew S
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Brent H
Test Fit:
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Test Fit:
Robert C
Test Fit:
David F
Test Fit:
Ryan G
Updated by:
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Updated by:
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