bing tracking image
  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 Inch Diameter

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

Item # RM73FR
Our Price: $1,127.25
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.

Shipping Weight: 61 lbs
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

Customer Photos


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 RM73FR or order online at Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Rear Anti-Sway Bar - 1-1/2 Inch Diameter. Anti-Sway Bars reviews from real customers.
  • All Info
  • Reviews (13)
  • Q & A (0)
  • Photos

Roadmaster Anti-Sway Bars - RM73FR

  • 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.


  • 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


  • 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.

1129-145 Road Master Anti-Sway Bar - Rear

Installation Details RM73FR Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Roadmaster Rear Anti-Sway Bar - 1-1/2 Inch Diameter - RM73FR

Average Customer Rating:  4.4 out of 5 stars   (13 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.

Dodge Ram Pickup

I believe it has made a difference. We have a Wolf Creek truck camper on a 2021 Ram 3500 with duels, last year on a trip from Minnesota to Oregon before I installed it we encountered some high winds truck did not handle well. Going down Donner Pass in California was a nightmare! Since the install I have not had a bad handling experience, haven't been in any mountains but have been in high winds. Not an easy install, hard to get at the frame to drill. Could only get one hole drilled on the right side so I made a clamp to hold the bracket. I feel it is worth the price and work to install, truck should have had this from the factory.

Gene H.


It was working good but last winter I traded the truck for a new one. This time I went with a Hellwig antisway bar it didnt seem as heavy duty but it was much much easier to install and it seems to be working good.


The product seems to be high quality but the instructions are not that great to mount the drivers side frame mount for the link . Not to easy to drill the holes to line up on the inside of the frame unless you drop the fuel tank to mark & drill them . I didn’t want to do that so my holes were a bit off & I ended hogging out the bracket some on one side to get the bolt to go through . Also didn’t know if the bar would clear my Banks rear diff cover & etrailer would have been willing for me to return it including shipping at no cost if there were clearance issues . Great customer service.

2019 Ram 3500

Seems like a great product. Was able to install it the night I received it. Would like to ask Roadmaster to provide better guidance on the drivers side bracket install. It basically has to be done basing off of the visual in the directions. Took me about 3.75 hours to install.

Ford Transit Connect

After getting the first shipment and finding that someone had stolen the contents from the box and retaped it while in transit, I was anticipating a drawn out process to get another swaybar. I sent an email indicating the theft along with a few pictures of the obviously tampered shipping box. Karen at e-trailer expedited a new order and had a new one shipped the same day. (I was leaving on an extended trip in a couple days and had to get it installed on my truck which carries my camper). I got my swaybar a couple days later and it was installed in time to load my camper and head out. Thank you e-trailer for the great service! I have purchased several things from them and will continue to do so. Good customer service is almost a thing of the past. E-trailer makes sure it’s not gone.


Fits my Ram 3500 as promised.

2021 Ram 3500

I was disappointed to learn my brand new 21 Ram 3500 did not come with a anti sway bar. The Roadmaster RM73FR was the only after market I could get in time for my next road trip pulling our 40' fifth wheel. It is a heavy duty bar however it is also over priced.

Installation was not as cut and dry as the direction indicate and frankly the directions are very poor. The part numbers called out for the link arms were incorrect however the link arms did fit correctly even though they were labeled wrong. Link arm with factory bend goes on drivers side. They do not mention removing plastic mud wall and fender support bracket on passenger side in order to drill the forward hole in the frame. Definitely remove passenger side rear tire and while truck is jacked up drill your holes through the lower shock mounts because if working from the ground you will not have enough clearance from the ground to fit your drill. I haven't towed with it at the time of this review, however test driving with quick maneuvering and cornering indicates is already an improvement.


The difference was night and day! Would highly recommend.


2021 Ram 3500


2019 Ram 3500

2019 Ram 2500

2022 Ram 3500


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

Do you have a question about this Anti-Sway Bar?

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Michael B
Installed by:
Michael B
Employee Jameson C
Expert Research:
Jameson C
Employee Mike S
Written by:
Mike S
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. Let us know if anything is missing or if you have any questions.

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