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

Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter

Item # 1139-178
Our Price: $521.24
Anti-Sway Bars

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Shipping Weight: 32 lbs
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1139-178 - Rear Roadmaster Anti-Sway Bars
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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 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 1139-178 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter. Anti-Sway Bars reviews from real customers.
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Roadmaster Anti-Sway Bars - 1139-178

  • Anti-Sway Bar
  • Roadmaster
  • Rear
  • 1-1/2 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.


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 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 ployurethane 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


Specs:

  • Bar diameter: 1-1/2"
  • 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.



1139-178 Road Master Anti-Sway Bar - Rear

Installation Details 1139-178 Installation instructions

This Product Fits The Following Vehicles

  • 2000 - 2014 Ford Van E-350 - Cargo and Passenger Van
  • 2000 - 2014 Ford Van E-350 - Class B



Customer Satisfaction Score:


Customer Reviews

Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter - 1139-178

Average Customer Rating:  4.8 out of 5 stars   (1848 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.

by:

Very straightforward installation and all the parts were of high quality. This is a substantial, solid sway bar. My RV feels a lot more solid on the road in curves etc. Very satisfied with the product.



by:

In my opinion it makes my van 85% easier to drive. High winds no longer a problem. Van much easier to drive long distances. Only drawback is instillation. Instructions for my application are poor.



by:

Excellent experience, large online stock and my swaybar was not a special order, I received this item very fast! Viva etrailer!



by:

The package was delivered very quickly. I just had my mechanic open it today and everything looks perfect. Thank you so much!



by:

E-350 Pleasure-Way Excel TS. Best investment ever since original did not have one. Vehicle was hard to handle at highway speeds. Now handles without the excessive sway. Install with the rear curve of the bar down for best fit. etrailer customer is the best as original received without the attachment hardware. They immediately shipped a replacement.



by:
Ford E-350

Shipping was excellent! Product quality was excellent! I installed on a Pleasureway Class B Ford E350 chassis, it fit "like a glove".
The chassis had 3/8" holes (short slots) in exactly the position required to bolt on the upper linkage end (after drilling out to 1/2").
The bar center positioned itself perfectly after bolt-up to the area in between the differential cover and the fresh water tank. One feature was the the center portion of the bar angles up from the two linkage ends, the fulcrum being at the axle U-bolt attach regions. Installing this angle up allows the antisway bar center "U" to tuck up and not interfere with access to the differential or reduce ground clearance. This was not addressed in the installation notes and was determined by trial and error. There definitely should be a specific note about installing on the E350 chassis for Pleasure-way RV addressing this. One other comment is that the bar is 1.5" and the vertical linkage bars are maybe 5/8" thick, could they buckle/deform when a strong force is transmitted via the axle given the stiffness of the sway bar?

The chassis had 3/8" holes (short slots) in exactly the position required to bolt on the upper linkage end (after drilling out to 1/2").
The bar center positioned itself perfectly after bolt-up to the area in between the differential cover and the fresh water tank. One feature was the the center portion of the bar angles up from the two linkage ends, the fulcrum being at the axle U-bolt attach regions. Installing this angle up allows the antisway bar center "U" to tuck up and not interfere with access to the differential or reduce ground clearance. This was not addressed in the installation notes and was determined by trial and error. There definitely should be a specific note about installing on the E350 chassis for Pleasure-way RV addressing this. One other comment is that the bar is 1.5" and the vertical linkage bars are maybe 5/8" thick, could they buckle/deform when a strong force is transmitted via the axle given the stiffness of the sway bar?" />


by:

Rear sway bar suspension kit was received promptly with all needed parts included. I also appreciate reviews from others on this part number which provides additional insight into needed installation process!



by:

Installed it on my B Class RV and it makes it feel more stable.

I was surprised my model didn't have one as all the more recent ones from the same manufacturer come with them now.



by:

After an inexpensive professional install...the results on our class B is nothing short of fantastic!!



by:
2008 Ford E-350

Used on 2009 Pleasureway (2008 E350 chassis) Excel TS Class B RV - installed by trusted local garage - fit perfectly! - greatly improved drivability! - very satisfied!



by:

This product helped add stability to my 2006 Ford Pleasure Way RV. Glad I had it installed. Wind is still somewhat of an issue, but definitely improved.



by:
2007 Pleasure Way Excel

Eliminated excessive sway in my Pleasure Way exel TS. Highly recommend.



by:
2002 Ford Van

David

5/10/2022

Hello Patrick. We installed the product on an E350 Heavy Duty chassis. It was intended to stabilize the campervan in order to correct a sway when towing a Jeep Wrangler. The link below would not work for me. A lot of time was spent on trying to solve the problem. Ultimately the most effective addition was installing custom wheel spacers in order to expand rear wheelbase. Knocked about 85 of the problem out.



by:

Great product



by:



by:

All done as promised.



by:



by:

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.



by:

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.



by:

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.



by:

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!!



by:

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



by:

Replaced the anti-sway bar on our 2019 F350. No special tools or jacks needed for the installation. Now our Lance 850 truck camper doesn’t sway nearly as much as before. Big improvement. Very pleased!



by:

The last thing to upgrade my front suspension on my 2018 Winnebago Aspect 27k. Money well spent! Easy installation, the ride greatly improved. Etrailer shipped this fast and I'm very pleased. Thanks.



by:

Major driving experience I upgrades my 2020 Thor Motor Coach KW-29 with front & rear sway bar, front steering stabilizer shock, All 4 front/rear Koni shocks, & Rear End stabilizer to chassis all together best investment on my RV improvement handling, body sway when 18 wheeler passing u up minimizing body sway from minor to none at all, reduce fatigue while driving course correcting steering reducing stress. Each component was felt the improvement but all together it’s been major improvement & experience


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