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  1. Anti-Sway Bars
  2. Roadmaster
  3. Anti-Sway Bar
  4. Rear
  5. 1-1/2 Inch Diameter
  6. Mounting Hardware Included
THIS ITEM IS NOT A FIT FOR
2013 Ram 5500
Roadmaster

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

Part Number: RM43VR
In Stock
$800.00
Retail:$889.69
You Save: $89.69
Anti-Sway Bars
Not Confirmed to Fit

2013 Ram 5500

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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 RM43VR 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 - RM43VR

Highlights

  • Custom Fit for Your Vehicle: Tuned to your suspension for better control and stability.
  • Reduces Sway: 1-1/2" 4140 chromoly steel bar minimizes side-to-side movement for steadier handling.
  • Improves Stability: Balances weight transfer and reduces body roll for confident lane changes and turns.
  • Handles Crosswinds: Keeps your vehicle level against gusts, passing traffic, and shifting cargo loads.
  • Less Driver Fatigue: Cuts constant steering corrections so long trips feel smoother and more comfortable.
  • Uses Existing Connections: No drilling required; mounts to rear axle and frame with included hardware.
Made in USA

Features to know about

Flatter Cornering: Rear Bar Reduces Body Roll

Few upgrades make as big a difference in control as a solid rear sway bar. The 1-1/2" diameter Roadmaster bar ties the rear axle to the chassis to balance weight transfer and cut down on lean in turns. Built from thick 4140 chromoly steel, it’s considerably harder and stronger than the 1020 steel that comes stock, so it resists flexing and keeps the rig level through curves, quick maneuvers, and uneven surfaces.

Installed Roadmaster Rear Anti-Sway Bar mounted on vehicle rear axle showing attachment to chassis and suspension components

Steadier Highway Tracking: Cuts Sway from Crosswinds and Passing Traffic

That uneasy drift when a semi blows by or a crosswind hits is where this setup shines. By minimizing side-to-side movement, the bar keeps the vehicle planted and centered, reducing the effort it takes to hold your line on long stretches. Less correction at the wheel means less tension in the driver’s seat and a smoother, more predictable ride.

Durable Performance: 4140 Chromoly Steel and Polyurethane Bushings

This isn’t a part that gives up over time. The 4140 chromoly steel bar delivers superior torsional stiffness, and the polyurethane bushings outlast standard rubber by resisting wear from oil, gas, and ozone. Less give means more consistent support and better tracking, mile after mile.

Close-up of Roadmaster Anti-Sway Bar polyurethane bushings and grommets highlighting durable construction and material quality

Straightforward Installation: Heavy-Gauge Hardware, No Drilling Required

The kit includes the mounting hardware, lubricant, and instructions for a direct bolt-on fit. It attaches to the rear axle and chassis with no drilling, working cleanly alongside most popular suspension add-ons or accessories. Once it’s in place, you’ll feel the improvement right away.

Specs

Specifications

  • Bar diameter: 1-1/2"
  • Warranty: Limited Lifetime Warranty

1209-110 Road Master Anti-Sway Bar - Rear

Installation Details RM43VR Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.8

2478 reviews
5 Stars
(2126)
4 Stars
(244)
3 Stars
(45)
2 Stars
(21)
1 Star
(42)
Review sort icon
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:

I love this sway bar, and love the service and overall experience with etrailer. My F350 came with factory sway bars front and rear, and I'd replaced the rear bar several years ago, and was impressed with the difference it made. So, more recently I ordered the front bar to replace the smaller factory unit, and it again made a wonderful change for the better. Our Bigfoot truck camper is tall and heavy, but our rig handles wonderfully and has essentially no sway or rock in traffic or on bumpy roads. I highly recommend this sway bar.



by:

After a year of usage, I couldn't be happier with the Roadmaster front and rear anti-sway bar kits. The rear kit for my W22 chassy, the mounting hardward would not fit properly. I call Roadmaster directly and they custom built the mounts, painted, and shipped within days.



by:

Grate stuff. Easy to bolt up and figure out. Drive quality improved dramatically and less sway with trailers.
Just in the kit with the grease and red lock tight the hardware washers were one size to large so I got the right ones and installed all is well.



by:

Easy installation ,done by myself laying on my back in the driveway only took about 1 1/2 hours to do. I have a lift but didn't use it and I think it was easier on the ground for just one person. Sway bar made a big difference in the drivability of my 2003 E350 pleasure way class B
I'll upgrade the front factory bar to the HD Roadmaster bar soon
If you have issues with the handling of your Ford pleasure way start with this sway bar



by:

This is a must have for your Motorhome. What a difference in the ride of the coach through the highway washes, the side winds and the side drift of the big rigs. This bar reduces the coach movement by as much as 80% I would say. The installation is easy for someone who is mechanically inclined and still doable for DYIer as long as you have the tools ( standard 1/2” drive tool set, low speed high torque drill for the holes in the frame and a 250 plus ftlbs torque wrench). I would highly recommend this Anti-Sway Bar.



by:

a quick fix it to install sway bars front and rear.
I did this and just came home from 2400 mile trip.
installed rear only before we left, then at our destination installed front.
the drive back it handles wayyy better and it sits level now.
""your results may very-use at your own risk. ""
from etrailer.com
rear = RoadMaster 1259-109.
front = RoadMaster RM-1259-105 with RM-590063-00 bracket kit.
i'm sure over time they will flex and stress and start to lien again.
But for now it looks much happier. ( and level )
and i'm very happier with performance and drivability
Seems the big bars help distribute the load to both sides,
you can drive it with one hand now.
and when a truck passes, it's very manageable.
( this could be part the tires on it )
these can be installed in about 6 hours pretty easy.
The hardest thing is drilling the 8 holes in frame. ( 4 front 4 rear. )
We had to shift 2 brake lines over via and small bracket and covers lines with old fuel like to act as wear buffer.



by:

Received the product in a timely manner. The shipping company used I’d give a no star rating. I received the anti-sway bar bare out of a box or wrapper with the installation part box and a cut out piece of cardboard with the shipping label on it taped to the bare bar with about five yards of packing tape. The bar was scuffed, scratched and chipped with the RoadMaster label destroyed. I realize it’s going to be installed under the front of my motorhome but as much as it costed I would like to be the one to scratch and scuff it. If I was a company installing this on a customers vehicle I’d return it. I do not believe it was shipped from etrailer in this condition.



by:

Great buying experience with ETrailer. Fast shipping and quality constructed part. Noticeable difference in controlling body sway. Very pleased with the bar and highly recommend Etrailer.



by:

I have carried a truck camper for 7 years with just Timbrin blocks also from Etrailer and finally made the move to Roadmaster anti sway bars front and rear. Planning a trip to the west coast from Georgia next year and wanted all the help I can get for stability on the mountain roads. Have yet to test but Im sure it will be a noticeable improvement. When my wife takes the wheel so I can have a break she would see-saw the steering wheel to balance the load and it drove me insane. Hoping for relief for both of us.



by:

RM-1109-121 Rear Sway bar for 85 Chevyvan G30 RV. Install was pretty straightforward. I would mount the brackets to the frame first and then the sway bar to the axle. It’s easier to drill the holes without the sway bar getting in the way.
Before I replaced the shocks and upgraded the from sway bar and added the rear sway bar my G30 Chevyvan Winnebago was a wallow wagon. It took 110% focus to drive. Now it drives like a regular vehicle. Smooth. No leaning over when cornering. It’s night and day.



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Good service answer all my questions



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Minimized the sway making for a safer r ide.



by:

I was pleased with the reduction and sway after installing the sway bar.



by:

Purchased this sway bar a year ago. Installed it myself which was relatively easy. Noticible improvement in sway over the oem bar.


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

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    If your 2021 Mercedes-Benz Sprinter 3500 is a van then yes, the Roadmaster Rear Anti-Sway Bar # RM43VR is the only compatible option. If your 2021 Mercedes-Benz Sprinter 3500 is a Class C motorhome then you also have the option of the Roadmaster Rear Anti-Sway Bar # RM-1209-131. The real difference between these anti-sway bars and the factory sway bar that came on your Sprinter is the thickness of the bars and the polyurethane bushings, which last longer than the factory rubber bushings....
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    Based on the information I could find on your 2022 Mercedes Sprinter 3500 cab and chassis it appears to come with a 1-1/2" rear sway bar. The Roadmaster Rear Anti-Sway Bar # RM43VR you found is designed to replace the factory bar but is a stronger steel than the factory unit so it will not flex as much. We do have the Auxiliary Sway Bar # RM-1209-131 which will mount in addition to the factory sway bar and can also be used with Bar # RM43VR above to give you the best reduction in sway.
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  • Will Installing A Sway Bar On A 2020 Mercedes-Benz Sprinter 3500 Void The Warranty?
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    The best way to get rid of the sway you are experiencing with your 2021 Forest River Class C built on a Mercedes Sprinter chassis is with a Roadmaster rear sway bar part # RM43VR. This will do an excellent job getting rid of sway and body roll and would make the biggest improvement compared to other options.
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Info for this part was:

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

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