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

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

Part Number: RM-1209-128
In Stock
$340.00
Retail:$378.25
You Save: $38.25
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 RM-1209-128 or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Rear Anti-Sway Bar - 1-1/8" Diameter. Anti-Sway Bars reviews from real customers.
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Roadmaster Anti-Sway Bars - RM-1209-128

  • Anti-Sway Bar
  • Rear
  • Roadmaster
  • 1-1/8 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.


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
  • Made in the USA


Specs:

  • Bar diameter: 1-1/8"
  • 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.



1209-128 Road Master Anti-Sway Bar - Rear

Installation Details RM-1209-128 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

1967 reviews
5 Stars
(1679)
4 Stars
(206)
3 Stars
(35)
2 Stars
(14)
1 Star
(33)
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.

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Show More Reviews

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

  • Sway Bar Recommendation for 2017 Mercedes Benz Sprinter 2500 without Sway Bar
    For your 2017 Mercedes Benz Sprinter 2500 the Roadmaster sway bar kit part # RM-1209-128 is a confirmed fit and will work great. Since you do not have a factory sway bar you will need to also use the # RM-590064-00 when you install it. If you check out the installed picture I attached for this sway bar you'll see that it mounts at an angle so getting the cut out dimension as it would be parallel to the ground may not be helpful. The picture though would most likely let you know if you...
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  • Sway Bar Recommendation for 2021 Mercedes Benz Sprinter 2500 without Factory Sway Bar
    For your 2021 Mercedes-Benz Sprinter 2500 that does not have a factory sway bar your best option is the part # RM-1209-128 with the mount kit part # RM-590064-00. The mount kit is for versions of your vehicle that do not have a factory sway bar and what allows the fit. This will make a dramatic improvement in the ride quality of your Sprinter that you will notice immediate.
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  • Recommended Rear Anti-Sway Bar For 2013 Mercedes-Benz Sprinter Motorhome
    We do offer rear anti-sway bars for your 2013 Mercedes-Benz Sprinter. If you have a 2500 the rear anti-sway I recommend is part # RM-1209-128. Using this bar helps reduce the effects of crosswinds and shifting cargo or passing vehicles. It attaches to the rear axle and chassis and includes the mounting hardware. If your motorhome is a 3500, the rear anti-sway bar you would need is part # RM-1209-120. I have attached a photo that shows how the anti-sway bar is normally attached on a...
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  • Rear Anti-Sway Bar for a 2011 Sprinter 2500
    The correct rear anti-sway bar for a 2011 Sprinter 2500 is # RM-1209-128.
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  • SuperSprings Rear Helper Springs on 2016 Mercedes Sprinter 2500 are Not Engaging
    Having that slight gap between the new SuperSprings # SSR-329-47 and the platform they make contact with is common not just with this brand but with others as well. It allows your suspension to compress some so as not to have too much of an effect on the unloaded ride quality. Since the springs are not engaging at the rear of your 2016 Mercedes Sprinter 2500 that means that the factory suspension is not compressed enough. And that means that the amount of weight you have in the van is...
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  • Rear Sway Bar Recommendation for 2015 Mercedes Benz Sprinter Class C Chassis Pleasure Way
    The difference between the two Roadmaster sway bars is the specific 2015 Mercedes Sprinter you have. The part # RM-1209-128 is for the 2500 van and cutaway models but yours is the 3500 Class C model so the rear sway bar is the part # RM-1209-131. At this time there isn't a front sway bar available, but the rear sway bar is the one that makes the biggest difference so the one I recommended would still be a great option to improve your ride quality.
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  • Best Option for Sway Control on a 2012 Mercedes-Benz Sprinter 2500
    Both the Timbren Rear Suspension Enhancement System part # TMBRSP25A and the SumoSprings Maxim Custom Helper Springs part # SSR-326-47-1 will help reduce the swaying and rocking issues you are having with your 2012 Mercedes-Benz Sprinter 2500. However, both of these products are more or less geared towards load leveling not necessarily sway control. The best option I have to help with swaying and rocking is a rear sway control bar or on vehicles that already have a rear sway control bar,...
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  • Recommended Anti-Sway Bar for Mercedes-Benz Sprinter 2500
    For your 2017 Mercedes-Benz Sprinter 2500, I recommend the Roadmaster Rear Anti-Sway Bar # RM-1209-128. This rear sway bar is confirmed to fit your Sprinter and will do a great job of minimizing side-to-side movement and improving its overall stability while traveling. This particular sway bar is designed to replace the factory sway bar on the Sprinter. If your model Sprinter does not have a factory bar, you will also need to add the Mount Kit # RM-590064-00 for installation. I have...
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  • Rear Anti-Sway Bar from Roadmaster for a 2017 Mercedes-Benz 2500
    For an Anti-Sway bar from Roadmaster that is a confirmed fit for your 2017 Mercedes-Benz Sprinter 2500 you will need part # RM-1209-128. Keep in mind that this is an upgrade to a pre-existing OEM anti-sway bar so if none is present you will also need to install part # RM-1209-128.
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  • Does Roadmaster Sway Bar # RM-1209-128 Fit 2016 Mercedes-Benz Sprinter
    Yes, the Roadmaster sway bar part # RM-1209-128 that you referenced is a confirmed fit for your 2016 Mercedes Sprinter 2500 and would work well.
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  • Installation Instructions for Rear Anti-Sway Bar for 2016 Mercedes-Benz Sprinter 2500
    I have attached the installation instructions for the Roadmaster # RM-1209-128 to this answer, but this rear anti-sway bar will mount in place of your factory sway bar. If your 2016 MB Sprinter 2500 does not have a factory sway bar you will also need to add the Mount Kit # RM-590064-00. These mounts will connect to the frame and provide the mounting points for the Roadmaster sway bar.
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  • Which Rear Anti-Sway Bar Fits a 2011 Mercedes Sprinter 2500
    I checked with Roadmaster and they list the rear anti-sway bar # RM-1209-128 as the correct fit for a 2011 Mercedes Sprinter 2500. I have also included a link to an FAQ article that covers stability control for heavy duty vehicles that you might find helpful.
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  • Recommended Rear Anti-Sway Bar For A 2013 Mercedes-Benz Sprinter Motorhome
    The correct fit is going to vary depending on whether your more Mercedes-Benz Sprinter is a 2500 or 3500 and whether it's a Class B or Class C Motorhome. From what I can find the model you referenced is a Class B but I'll go ahead and list out the Class C fits just incase. Class B: 2500 part # RM-1209-128 3500 part # RM-1209-120 Class C: 2500 part # RM-1209-128 3500 part # RM-1209-131
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  • Rear Anti-Sway Bar for 2013 Winnebago Class C RV On Mercedes Sprinter Chassis
    If your 2013 Winnebago on the Mercedes Sprinter chassis is the 3500 chassis then you can use rear anti-sway bar # RM-1209-131. With this unit the factory sway bar will remain. If the chassis is the 2500 with the van cab the same as regular Sprinters but with a different body (this is called a cut away) then you would use # RM-1209-128. This unit replaces the factory sway bar. If the vehicle does not have a factory sway bar then you will also need mounting kit # RM-590064-00. The differences...
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  • What is Included with Retro-Fit Kit for Sprinter Vans without Factory Sway Bars 590064-00
    The retro-fit installation kit, # RM-590064-00, for the 2009 Freightliner Sprinter 2500 contains the following items: Four 10mm x 1.5 Locknuts Four 10mm x 1.5 x 25mm Hex Bolts Two Bushing Clamps Two 12mm x 1.5 x 140mm Hex Bolts Two 12mm x 1.5 x 55mm Hex Bolts Four 12mm x 1.5 Locknuts Two Endlinks Since your RV did not come with the factory rear anti-sway bar you will need this kit to install anti-sway bar # RM-1209-128.
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  • Rear Anti-Sway Bar for a 2015 Mercedes Sprinter Class C Motor Home
    Roadmaster rear anti-sway bar # RM-1209-131 will fit a 2015 Mercedes Sprinter 3500, Class C. And it retains the factory anti-sway bar. Rear anti-sway bar # RM-1209-120 fits both the regular van models and RV cut-away models and replaces the factory anti-sway bar. An RV cut-away is just the van cab part and a different motor home body put on the rest of the chassis. If you happen to have a 2500 model then you would use # RM-1209-128. And if the vehicle did not come with a factory anti-sway...
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  • Can a Rear Anti-Sway Bar Be Added to a 2017 Mercedes-Benz Sprinter 2500
    The 2017 Mercedes-Benz Sprinter 2500 could have came from the factory either with or without a rear anti-sway bar. If you do not have the factory rear anti-sway bar then in order to install the Roadmaster Rear Anti-Sway Bar part # RM-1209-128 you would also need the Retro-Fit Kit for Dodge Sprinter Van part # RM-590064-00. I spoke to my contact at Roadmaster and unfortunately they were not able to confirm if drilling is required or not due to the lack of testing. The only thing you would...
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  • Do You Have a Swaybar for a 2022 Mercedes-Benz Sprinter 2500?
    Hey Tony! I checked with our vendors and the only option for a sway bar on your 2022 Mercedes-Benz Sprinter 2500 is the 1-1/8" Roadmaster Rear Anti-Sway Bar item # RM-1209-128. However, this is just meant as a replacement option for the factory one if your Sprinter came with one. The only option I have to help you with sway is the SumoSprings Rebel Custom Helper Springs item # SSR-327-47-2. These are custom fit for your 4WD Sprinter and have a 5,000 lbs capacity. These two piece springs...
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  • Why Doesnt Retro-Fit Kit for Dodge Sprinter Van 590064-00 Come with Bushings
    The part # RM-590064-00 is a part that is normally used with a sway bar kit # RM-1209-128 on Sprinter vans that don't have a factory sway bar. The sway bar part number does come with the needed bushings to use with the adapter.
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Do you have a question about this Anti-Sway Bar?


Info for this part was:

Employee Lindsey S
Written 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 Isabelle B
Updated by:
Isabelle B
Employee Sabrina W
Updated by:
Sabrina W

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