bing tracking image
  1. Anti-Sway Bars
  2. Roadmaster
  3. Anti-Sway Bar
  4. Rear
  5. 1-5/8 Inch Diameter
  6. Steel w Polyurethane Bushing
Roadmaster Rear Anti-Sway Bar - 1-5/8" Diameter

Roadmaster Rear Anti-Sway Bar - 1-5/8" Diameter

Item # RM-1109-157
Our Price: $684.13
Anti-Sway Bars

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Need help with installation?
Locate installers near me
Minimize sway and driver fatigue by improving the stability and driveability of your vehicle. The bar on this sturdy, effective anti-sway system mounts to the rear axle and to the frame to balance weight transfer and reduce body roll. 1-800-940-8924 to order Roadmaster anti-sway bars part number RM-1109-157 or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Rear Anti-Sway Bar - 1-5/8" Diameter. Anti-Sway Bars reviews from real customers.
  • All Info
  • Reviews (1928)
  • Q & A (0)
  • Photos

Roadmaster Anti-Sway Bars - RM-1109-157

  • Anti-Sway Bar
  • Rear
  • Roadmaster
  • 1-5/8 Inch Diameter
  • Steel w Polyurethane Bushing

Minimize sway and driver fatigue by improving the stability and driveability of your vehicle. The bar on this sturdy, effective anti-sway system mounts to the rear axle and to the frame to balance weight transfer and reduce body roll.


  • Minimizes side-to-side movement to improve overall stability of your vehicle
    • Lets you execute turns and quick maneuvers with confidence
    • Allows for a level ride, even on irregular surfaces
    • Reduces driver fatigue - minimizes effort required to keep your vehicle in line
  • Diminishes effects of crosswinds, passing motorists and shifting cargo
  • Designed to fit your vehicle and work in conjunction with its suspension system
    • Attaches to rear axle and to chassis - uses weight of axle to brace frame as it shifts in turns
    • Engineered to avoid interference with most popular aftermarket add-ons and accessories
  • Made with polyurethane bushings instead of the standard rubber variety for a longer-lasting system
    • Polyurethane is durable and resistant to damage caused by oil, gasoline and ozone
    • Less wear means less give in the system and better support
  • Constructed of thick 4140 chromoly steel for superior strength
  • Includes heavy-gauge mounting hardware, easy-to-follow instructions and bushing lubricant
  • Works with front anti-sway bar (sold separately) for absolute stability - available on certain applications only
  • Made in the USA


  • Bar diameter: 1-5/8"
  • 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.

1109-157 Road Master Anti-Sway Bar - Rear

Installation Details RM-1109-157 Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Roadmaster Rear Anti-Sway Bar - 1-5/8" Diameter - RM-1109-157

Average Customer Rating:  4.8 out of 5 stars   (1928 Customer Reviews)

Minimize sway and driver fatigue by improving the stability and driveability of your vehicle. The bar on this sturdy, effective anti-sway system mounts to the rear axle and to the frame to balance weight transfer and reduce body roll.


Can't recommend Enough...combined with front sway bar kit turned our Chevy Kodiak 5500 motorhome into a Corvette..night and day difference...can't believe I drove all those miles without one...


Fast shipping. Great customer service


Sway bar operates fine. However, the installation took over 10 hours due to rivets on the leaf springer hangers vs. bolts and with 80gallon fuel tank between the frame Camping World had real issues grinding the rivets and replacing them with bolts! In 2008 apparently GM used two methods to install leaf spring hangers. Even with advance research this was not well documented as a consideration and one roadmaster had limited knowledge of when I encountered the problem.
etrailer did not stand behind this issue they left me to resolve and did not offer a return and credit. I have bought from etrailer prior with good results including best price match guarantee however have not purchased anything from them since this issue!

Etrailer Expert

Sierra K.


Rear leaf spring hanger brackets may be bolted or riveted on. When riveted, install time will increase. Manufacturer codes can be found under the driver side visor: EV8 = Rivets EV9 = Bolts. Unfortunately, we do not have any alternate instructions that show the rivet installation.


Product shipped same day as ordered, received several days later in great condition. Instructions from Roadmaster could have been better but got it installed myself.






I have a 2017 Ford F350 Super Duty SRW, and we haul a heavy truck camper (Lance 1055.) I have Stable Load Uppers and HD airbags, but wanted to add a sway bar to add that extra layer of control, even though my truck has handled the camper well over the last 2 years and 10,000 miles. My truck did not come with an OEM sway bar installed, so I needed this kit that included the End Links too.

The Roadmaster Rear Sway Bar and End Links sold on etrailer are top quality products. They are robust and well made, with quality hardware to match. The product deserves a 5-star, and even unloaded, my truck handling improved right after installation, with improved cornering and no real impact on ride quality in my opinion. I have not yet loaded up our camper or towed our boat, but I have no doubt this sway bar will substantially reduce sway and will improve control and handling when the camper is loaded.

So why 4 stars and not 5?

1. I researched this product and the installation in detail. I planned on installing it myself and expected to find plenty of detail on etrailer's site, or Roadmaster's site, or the internet. My most pressing question was about where to mount the end links, and the orientation of the sway bar arms since I wouldn't be using the OEM end links. That information was no where to be found on the etrailer site, Roadmaster's site, or in any installation manuals. For a product and supplier that has likely sold lots of these to Ford Super Duty owners, I was surprised to find how little info was out there. The installation video on the etrailer site was helpful, but did not include any information for the end links, as they had a 2015 Super Duty and used the OEM end links already installed. I contacted etrailer and they told me to contact Roadmaster for more info on where to locate the end links with this kit.

2. I contacted Roadmaster. They told me they had no instructions and that despite my truck already having the cut-outs for the OEM bracket that attaches the OEM end links to the frame, that none of those holes may work for me. So they suggested I connect the sway bar brackets to the axle first and then see where the arms would line up with the end links. The tech also suggested that it wasn't critical that the end links were perpendicular
to the frame, but that I should try install the end links to allow the arm of the sway bar to hand as close to parallel as possible. No bueno. When I installed this the 14" end links (center hole to center hole) didn't allow for the arms to hang parallel to the frame. And I don't think it matters as the orientation of my sway bar and the arms looks about like every video or picture I could find on the internet of this year/model truck and this sway bar kit. It seems to function fine.

3. Installing it was a bear, especially the way they instructed me to. And I had to make some modifications to fit my truck, as the sway bar arms were rubbing up against my airbag mounting brackets. I got it installed, but the thin instructions turned what should have been a 60 minute job into 2 1/2 hours. A bit frustrating.

All in all, this will do the job intended and will provide me with peace of mind next time we load our camper. I am a bit frustrated that there were zero installation instructions specific to my year/make/model of truck given it did not have an OEM sway bar and the end links had to be installed with a bit of guesswork. You will also note in my pictures that I had to mount the end links to the sway bar arms differently on each side to make the bar fit around my air bag mounts.


Fairly easy install. Drilling the hole in the frame was decent started with a 17/64 pilot hole then the 17/32 final hole. Take your time and let the drill do the work.
Do be aware of the hole placement on the drivers side as there are brake lines and wiring there.


This product arrived on time, and is as described in company literature. I have installed the sway bars and the sumo springs on my 2019 Ford E3 26 foot Thor motorhome. Installation is fairly straightforward. Having said that, I am a retired farmer and I am quite familiar with this type of work. Having the proper tools makes the job go much quicker and easier. Installation of the front sway bar took a little under an hour. The rear sway bar is a bit more complicated to install, but he can be easily accomplished by someone of average mechanical skills, equipped with the proper tools. I strongly recommend removing the rear wheels to facilitate installation of the springs and the sway bar. I have not driven my motorhome yet, but will be taking an extended trip in March. I am looking forward to an improved ride.


All the contents were delivered in the package. The kit fit perfectly as designed. Ordered for a Ford F-350 Super Duty. Truck handles great!


Was told from etrailer that this was going to be a quick plug and play but no this was to be installed on a class c ( no drilling) but no , ustraps had to be adjusted did not fit and struts would not reach had to drill chasis


Solid-built sway bar. Helps stabilize in wind while driving. Using on 2016 Thor Vegas 25.3 RV, notorious for suspension and driving issues. Using front anti-sway bar as well with Safe-T-Plus steering stabilizer.


OH My! If you are thinking about getting one for your P32 wide body. Please don’t hesitate. It REALLY Works. Take the white knuckle effect out of driving. EASY installation! Easy Ordering from etrailer. Roger helped me get through the buying process and shipped to my house in 2 days! Thank You!!


First, Eric was a great help throughout the purchasing and installation. I watched the tutorial numerous times and set up my tools. I bought a 3/4 inch torque wrench at Harbor Freight and a 4 ft galvanized pipe at Home Depot. I followed the instructions and the tutorial to the letter. The bar and mounting plates are heavy, so be very careful. This job isn't for a beginner, but if you are somewhat mechanically inclined, you can install it. The 300 Ft. Lbs torque of the 8 nuts took everything out of me. LOL...I adjusted the end links twice, and it leveled out great. Now, I will do a test run and see how it improves the handling of my motorhome. Its a 2022 Entegra Vision 29S.


Very heavy duty sway bar. Using it on a 2016 Thor Vegas 25.3 RV. Much thicker than original and still holding up fine. Helps to stabilize in high winds and passing trucks. Also added the Safe-T-Plus stabilizer to keep wheels from wandering.


I am happy to finally have the rear anti-sway bar installed. Noticed the difference right away. I will order the front anti-sway bar soon. I have the skills to install the anti-sway bar, but did not have the heavy tools to do the job. Paided a local shop 2hrs labour, well worth it.


I watched your video on the installation of the rear sway bar which I found to be helpful. I used an adjustable strap to level the sway bar before aligning and drilling for the links. Looking forward to a road test soon. Thank You


This sway bar is the real deal. Easy to follow instructions but I had it installed because I'm lazy. It took one hour labor


Your installation video was helpful. The front bolts on the the hangers required heating to break them loose. The factory was generous with blue lock tite. I might add the front bolts require a 18mm socket. Looking forward for a road test. Thank You always


Haven't opened the stabilizer bars but I did open the Sumo Springs and the Snap Pads. All seemed to be there in good condition.


The sway bar is good quality and probably does help with the cornering and the wind buffing from the semi trucks on the freeway.
The negative side is the bolts supplied adapter kit were under sized diameter to the point of ratting when you walked back and forth in the camper. To correct the problem I had to drill the poorly punched holes in the shackle to a true 1/2" then purchase new bolts and lock nuts that fit the bushings. After all the labor and expenses the sway bar has worked as intended with no noise. The other thing I had not considered was how much traction you loose on uneven ground but that is the trade off with better highway control.


This should have been original equipment.It ( 1995 Safari Trek) now drives like a completely different vehicle! I added Sumo Springs on the rear .These 2 items together are well the money. I installed both alone by myself (67 years young).


I didn’t realize our motorhome had an OEM sway bar already installed which was left in place. Etrailer selected one for us that was heavier and more appropriate for our unit. Instructions were a bit to be desired but once installed made a world of difference. Their staff is very knowledgeable and didn’t try to sell me more than I needed. Thank you Etrailer.

Show More Reviews

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

  • Recommended Suspension Enhancement for a 2008 GMC C5500 Motorhome
    Steve, it sounds like you could benefit big time from a steering stabilizer # RM73RR if your GVWR is above 22,000, or # RM36RR if it's 22,000 or less. This is not going to work with your OEM suspension so you'd have to remove the factory one, but it is going to help keep your steering tight and prevent it from wandering all over the road. You're also going to need the mounting kit # RM-RBK5 to actually mount it to your vehicle. To further improve your suspension, you can also add a...
    view full answer...
  • Does The Roadmaster Rear Anti-Sway Bar Fit A 2007 Chevrolet Kodiak C4500
    Yes, the Roadmaster Rear Anti-Sway Bar # RM-1109-157 does in fact fit your 2007 Chevrolet Kodiak C4500. This bar is constructed of high grade 4140 chromoly steel for superior strength, and, the bushings are made of polyurethane rather than rubber for a longer lasting system.
    view full answer...
  • Does OEM Rear Sway Bar Need to be Removed for Roadmaster Bar on a 2005 Chevy Kodiak RV
    The Roadmaster Rear Anti-Sway Bar # RM-1109-157 mounts on/behind your rear axle and is designed to work in conjunction with the OEM sway bar on your 2005 Chevrolet Kodiak RV so you will not remove the one currently installed. I have attached the installation instructions for you to check out as well. Please note the following tech tip that we have attached to the product: Rear leaf spring hanger brackets may be bolted or riveted on. When riveted, install time will increase. Manufacture...
    view full answer...
    Image 1 for
  • Front and Rear Anti-Sway Bars for 2009 Chevy Kodiak C4500
    From my research it looks like the Life Line is simply the box atop your 2009 Chevy Kodiak C4500, which would actually be the chassis. The anti-sway bars will not actually replace your Chevy's bars, they attach to the axle and chassis, which is why they do not look the same as yours. For an '09 Chevy Kodiak C4500, the correct Rear Anti-Sway Bar is # RM-1109-157 while the correct Front Anti-Sway Bar is # RM-1109-158.
    view full answer...
  • Recommendations to Prevent Sway on 2006 Jayco Seneca Motorhome
    One way to fix sway problems on a motor home is to brace the rear axle, to eliminate excessive axle side movement. The Roadmaster, # RM-1109-157, and similar products, mount between the rear axle and the chassis and hold the axle in place. This will greatly reduce rear end sway. Part # RM-1109-157is the correct part for the 2006 Chevrolet Kodiak. Adding a front sway bar is also an option. For a front bar, you can use # RM-1109-158. You could also install a steering stabilizer, # RM-RBK5-RSSA....
    view full answer...
  • Anti-Sway Bar for 2001 Roadtrek 190 Popular On Dodge B350 Van Chassis
    Roadmaster lists the # RM-1129-111 anti-sway bar as a fit for a 2000 Dodge B350 van or van cutaway chassis. They couldn't tell me if your generator would interfere, but you should be able to check out the installation instructions to determine if the generator would prevent installation. I'll also provide the installed photos we've received from a customer, which should also be helpful. As you can see in the photos, the bar sits directly below the rear axle, then connects at the frame...
    view full answer...
    Image 1 for
  • Will The Roadmaster Rear Anti-Sway Bar Work With Factory Anti-Sway Bar On 2008 Chevrolet Kodiak
    The Roadmaster Rear Anti-Sway Bar, Item # RM-1109-157, is a confirmed fit for your 2008 Chevrolet Kodiak. It will work in conjunction with and support of your factory rear anti-sway bar. I am attaching instructions that confirm this and give step by step instructions on how to install. I am also attaching a video for you to check out.
    view full answer...
  • Roadmaster Sway Bar Recommendation for 2008 C5500 28 ft El Dorado Aero Elite
    I forwarded this to our fit tech's at Roadmaster and they took a look at your picture and determined that the sway bar part # RM-1109-157 would fit without any issue. Here's what they sent me: "From what I can see, it looks like it will fit. I just compared the image to the instructions -- we have the tank in our images. The bump stops should not be a problem."
    view full answer...
    Image 1 for
  • Anti-Sway Bar and Steering Stabilizer Availability for a 34 Ft Chevrolet Kodiak
    As long as your 34 ft Chevrolet Kodiak motor home is between the years of 2003 and 2010, then the Roadmaster Front Anti-Sway Bar, # RM-1109-158, will help stabilize your motor home. For maximum stability you can also use the Rear Anti-Sway Bar, # RM-1109-157. These will fit the 4500 and 5500 models with or without the Granning Air Ride. I have attached links to the installation instructions for you to check out.
    view full answer...
  • Will Timbren Suspension Enhancement System TGMRC55 Fit 2008 Chevrolet Kodiak 5500 Motor Home
    The Timbren Rear Suspension Enhancement System # TGMRC55 that you referenced have been confirmed to fit the 2008 Chevrolet Kodiak 5500. These jounce-style suspension enhancement springs will help provide a level ride for your RV if the rear of the motor home is sagging under a heavy weight load. No drilling is required to install the springs, and I have attached the installation instructions for you. If you are looking to improve the ride quality of your RV, another component I recommend...
    view full answer...
  • Does Roadmaster Make Replacement Rear Anti-Sway Bar Brackets for 2009 Chevy Kodiak C5500
    I do have an option for you but we don't have replacement rear anti-sway bar frame brackets and bushings for the factory rear anti-sway bar on a 2009 Chevrolet Kodiak C5500. That said, if you have a Class C or EV Type 1 then we do have a full replacement rear anti-sway bar, the Roadmaster Rear Anti-Sway Bar part # RM-1109-157.
    view full answer...

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee David F
Installed by:
David F
Employee Dustin K
Video Edited:
Dustin K
Employee John S
Video Edited:
John S
Employee Shelly K
Updated by:
Shelly K
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Sabrina W
Updated by:
Sabrina W

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.

Product Experts Available Now!
Call 1-800-940-8924