Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter
(1870 reviews)
Price: $487.81
In Stock
Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter
Item # RM-1139-198
Our Price: $487.81
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- Reviews (1870)
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Roadmaster Anti-Sway Bars - RM-1139-198
- Anti-Sway Bar
- Rear
- Roadmaster
- 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 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
Specs:
- Bar diameter: 1-1/2"
- Limited Lifetime Warranty
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.
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.
1139-198 Road Master Anti-Sway Bar - Rear
Installation Details
This Product Fits The Following Vehicles
- 2016 - 2016 Holiday Rambler Augusta Motorhome E-350 - Class C
- 2016 - 2018 Gulf Stream BT Cruiser Motorhome E-350 - Class C
- 2016 - 2018 Thor Chateau Motorhome E-350 - Class C
- 2016 - 2016 Coachmen Concord Motorhome E-350 - Class C
- 2016 - 2018 Gulf Stream Conquest Motorhome E-350 - Class C
- 2016 - 2018 Phoenix USA Cruiser Motorhome E-350 - Class C
- 2015 - 2017 Ford E-Series Cutaway E-350 - Class C
- 2016 - 2018 Forest River Forester Motorhome E-350 - Class C
- 2016 - 2018 Thor Four Winds Motorhome E-350 - Class C
- 2016 - 2018 Thor Freedom Elite Motorhome E-350 - Class C
- 2016 - 2018 Coachmen Freelander Motorhome E-350 - Class C
- 2016 - 2016 Fleetwood Jamboree Searcher Motorhome E-350 - Class C
- 2016 - 2018 Coachmen Leprechaun Motorhome E-350 - Class C
- 2016 - 2018 Winnebago Minnie Winnie Motorhome E-350 - Class C
- 2016 - 2016 Nexus Phantom Motorhome E-350 - Class C
- 2016 - 2018 Thor Quantum Motorhome E-350 - Class C
- 2016 - 2018 Winnebago Spirit Motorhome E-350 - Class C
- 2016 - 2018 Forest River Sunseeker Motorhome E-350 - Class C
- 2016 - 2016 Fleetwood Tioga Montara Motorhome E-350 - Class C
- 1975 - 2014 Ford Van E-350 - Class C
Customer Reviews
Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter - RM-1139-198
Average Customer Rating: 4.8 out of 5 stars (1869 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: Mike05/31/2022
Ford
I have a 1994 Airstream B-190 motorhome on a Ford E-350. I saw these sway bars in the catalog for years. I put the back one on 1st it made a world of difference, so I put the front on as well. Should have done this years ago. Don't let the pictures fool you these bars are about as big around as your wrist and very heavy duty. Took a lot of the sway out the top-heavy conservation van. I recommend this sway bar and wish I would have put it on some of my other regular Ford Econoline vans a long time ago
by: Leonard 06/29/2021
Ford
RM-1139-198 is of high quality. Haven’t tested but have installed. Easy install, I was able to reuse the factory bolt holes on anti-sway bar and frame. Which made it fast and easy. Huge difference in size of RM to factory bars. Only issue I had was I ordered kit number RM-1139-198 to fit my 2018 Ford E-350 and this kit was garrantied to fit. But nothing on this product said ONLY if your E-350 or E-450 has auto drop down tire chains, oops I learned this after I received and started install. Part needed is RM-1139-117 which has 11 inch center to center bolt holes on links instead of the shorter 9 inch. The 9” links are just too short to work. I had to order the longer end links and yes they weren’t free. If you watch the install video on either kit number the tech points this out and with the longer links mine bolted up exactly as the video stated. After testing for awhile I’ll review the product again. This is the only improvement I’ve made so far.
Leonard
6/30/2022
Been a year now and I will say “it’s the best and first thing you should do to improve the drivability and suspension”. If you motorhome came with stock antisway bars that are small in diameter than the RM then this will make a very big difference in handling on curves and crosswinds, semi trucks.
by: Lewis11/22/2020
I really liked that this sway bar was fitted for my RV where I did not have to use the u-bolts and was able to bolt into the existing framework. I could tell somewhat the difference in driving with this unit but wanted to see the full extent with the front sway bar, which I am still waiting on to be delivered. Just after I installed this rear sway bar we went on a trip up to Colorado, but got snowed in and had to head back in a couple of day through icy conditions. This sway bar really made all the difference in the driving especially around semi-trucks passing either direction. Thanks.
by: Kamel07/23/2020
Great products, amazing support staff. Sarah H. was very professional and helpful. I would give all my business to etrailer due to their product variety and knowledgeable staff. Thank you!
by: Don 08/16/2022
This was an excellent piece. Made a huge difference in the drivability and handling. It was easy to install took about 45 minutes.
I highly recommend this product, worth every penny.
by: Rick 05/06/2021
by: Larry M.03/03/2023
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: Terry04/02/2023
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: Neal02/09/2023
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: Carey04/14/2024
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.
by: Carey04/14/2024
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.
by: Michael11/03/2022
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: Howard04/15/2024
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.
by: Ernest10/26/2022
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: Kent 05/07/2023
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).
by: John03/01/2024
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: Bill 04/18/2023
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: Jose 04/21/2024
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
by: Earl 04/15/2023
Free from the roller-coaster ride my 2022 thor motorhome had with the factory bars.I have questions about why these companies don't install the suspension while building the rv.
by: Freddy Perez05/27/2024
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
by: Tony07/16/2023
I installed both front and rear Road Master anti sway bars on our last RV and they made a tremendous improvement in handling. It was easy for me to install by myself in my driveway on out Coachman Leprechaun 319MB. I highly recommend this product.
by: John 04/16/2023
E trailer is.my go to place for anything towing trailering etc Absolutely the best products as well and the best service and the best people!!!!
by: Thom03/13/2024
After reading all the information regarding fitment for my 2001 Freightliner Chassis I purchased this rear anti sway bar kit which had a side note stating that if your chassis had different u bolts, which my chassis does I could contact Roadmaster engineering direct for the correct parts. I did contact them directly and they referred me to e trailer, who referred me to Roadmaster, pass the buck game. So after a year I have a half installed anti sway bar kit that is useless and unreturnable because it was half installed waiting for answers that never came. A waste of my time and hard-earned money NOT HAPPY.
by: Lawrence 04/27/2023
Item shipped quickly and the installation was fairly easy in my opinion. Have not been able to drive the RV yet but I'm sure this upgrade will improve the handling.
by: Man Bear Pig05/31/2023
This is on a 2004 Dodge 2500 with a 2500 lbs truck camper, Dirt bike on a hitch rack, and 2 mountain bikes on a front rack. The sway bar definitely helps. This one fit well around my stupid 5" exhaust that was installed by the previous owner. The Hellwig would not clear it. I have the Timbren SES and wedges in my leaf springs as well. The sway bar is a nice addition to those items. What I really notice is that when making emergency maneuvers or going off road, the truck corrects quicker than before and feels safer and less likely to tip over. I would not say the bar by itself will solve all of your issues, but couples with other remedies, it will help make your top heavy overloaded ride feel safer. With all my additions, I can confidently go the speed limit and often times well above through the Colorado mountains with no issues.
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See what our Experts say about this Roadmaster Anti-Sway Bars
- Anti-Sway Bar & SumoSpring Fit For 2009 Four Winds Majestic 23A on Ford E-350 MotorhomeWith the exception of the shocks, we do have all the parts you are looking for to improve the suspension of your 2009 Four Winds Majestic 23A motorhome. Your motorhome is built on a Ford E350 chassis, and here are all the parts you asked for (also note that there are different rear anti-sway bar fits depending on if your motorhome has automatic snow tire chains or not; most don't but I did want to add the option): - WITHOUT Automatic Chains: Roadmaster Rear Anti-Sway Bar # RM-1139-117 -...
view full answer... - Anti-Sway Bars for 1997 Ford E-350 Class C MotorhomeWe do have the anti-sway bars, steering stabilizer, and helper springs that will giver your Class C motorhome on a 1997 Ford E-350 chassis a much better ride. To best improve your ride you will want the rear anti-sway bar, followed by the front anti-sway bar, and steering stabilizer. These will give you the greatest improvements with the most comfort to your motorhome. I confirmed with the manufacturer the following fits, and the rear anti-sway bars are going to depend on if you have automatic...
view full answer... - Why are There Two 1-1/2 inch Diameter Roadmaster Sway Bars for 2017 Ford E-350 CutawayThe reason there are two 1-1/2 inch diameter Roadmaster sway bars that fit your 2017 Ford E-350 is that the # RM-1139-198 is for versions of the vehicle that have automatic snow chains that deploy and the part # RM-1139-117 is for the versions that do not have the chains. So based on whether you have the snow chains is how you'd pick which set to go with!
view full answer... - Recommended Air Bags And Sway Bars For A 2014 Sunseeker LE 2250S - FordI can get you everything you need for your 2014 Sunseeker LE 2250S (Ford), except the 1.5" front sway bar. The only one we have in this size will be for a 4500 so it will not fit your motorhome, unfortunately. However, I did include a 1-3/8" front sway bar that is designed for your vehicle, just in case. Front Air Bags: Firestone Coil-Rite Air Helper Springs # F4101 Rear Air Bags: Air Lift LoadLifter 5000 Ultimate Air Helper Springs with Internal Jounce Bumpers # AL88138 Rear Sway Bar: **Designed...
view full answer... - Roadmaster Rear Anti-Sway Bar 1988 E350The Roadmaster Rear Anti-Sway Bar, # RM-1139-198, is designed to fit the 1975 to 2017 E-series. While the # RM-1139-117 fits 1975 and beyond the 2017 for E-series Cutaway that newer Class C motorhomes are built on. If you used the fit guide to locate part number for you and it displayed both, then yes I can understand the confusion. Both do fit your model year but both do not fit latter model years. I would select the one with with better price point at time you order. Please see...
view full answer... - Roadmaster Rear Anti-Sway Bar For a 2010 Ford E-350 VanThe Roadmaster Rear Anti-Sway Bar # RM-1139-198 is designed to specifically fit emergency vehicles that have chains mounted on the rear axle. The Roadmaster Rear Anti-Sway Bar # RM-1139-117 is designed to fit a 2010 Ford E-350 cutaway for a motor home. If your E-350 is the standard work style van you will need the Roadmaster Rear Anti-Sway Bar # 1139-178.
view full answer... - How To Improve Stability In Rear On a 2000 Gulf Stream Conquest Yellowstone CapriYes, we do offer a solution to help improve stability in the rear on a 2000 Gulf Stream Conquest Yellowstone Capri with the Roadmaster Rear Anti-Sway Bar part # RM-1139-198. This is generally the first upgrade made on a motorhome to improve handing and stability and the one you will feel the most difference in.
view full answer... - Replacement Mounting Brackets for Roadmaster Steering Stabilizer on 1997 Ford E350 Class C ChassisYou're looking for the RBK24 Custom Mounting Brackets for Roadmaster Reflex Steering Stabilizer # RM-RBK24, which is designed to fit on the Class C Ford E350 chassis that your Fleetwood Jamboree is built on.
view full answer... - What is Difference Between Two Roadmaster Sway Bars that Fit 2012 Ford E-350Since there are several different variations of vans similar to your 2012 Ford E-350 there were several different styles of sway bars made to cover all of them. In this process there is some overlap which is why for your vehicle the part # RM-1139-117 and # RM-1139-198 both are a fit. They both are 1-1/2 inch diameter sway bars so they both will perform as good as the other.
view full answer... - What is Difference Between Roadmaster Anti Sway Bars that Fit 2017 Ford Class C RV E-350The difference between the two Roadmaster rear bars that fit your 2017 Ford E-350 Class C RV is that the part # RM-1139-117 is the correct fit for if you do not have the auto snow chains and the part # RM-1139-198 is for the versions that do have the auto chains.
view full answer...
Do you have a question about this Anti-Sway Bar?
Info for this part was:
Edited by:
Lindsey S
Installed by:
Jeff D
Expert Research:
Jameson C
Video Edited:
Joshua S
Video Edited:
John S
Written by:
Mike S
Test Fit:
Ryan G
Updated by:
Isabelle B
Updated by:
Sabrina W
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Mike D.
6/1/2023
LOVE them!!! AIRSTREAM should have put them on this unit as standard OEM factory. My B-190 is a 1994 has 53K and now I find I use it a lot more than I did before because it drives so much better with these heavy-duty sway bars! I combine these with airbags in the front and air shocks in the back and let me tell you it rides as good as my Caddy down the road. I recommend these sway bars to anyone that has a full size Van and wants a superior ride and drive ability upgrade for not a lot of money.