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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

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

Part Number: RM-1139-146
In Stock
$980.00
Retail:$1,087.17
You Save: $107.17
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-1139-146 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 - RM-1139-146

  • 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
    • Designed to support your factory anti-sway bar - not to replace it
  • 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: 1-1/2"
  • Limited Lifetime Warranty
  • Application: 16,000 lb and 18,000 lb GVWR chassis


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.



1139-146 Road Master Anti-Sway Bar - Rear

Installation Details RM-1139-146 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter - RM-1139-146

Average Customer Rating:  4.8 out of 5 stars   (2101 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.

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Show More Reviews

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

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    You're already on the right track with everything you looked at. Your 2018 Thor ACE 30.3 has a GVWR of 18,000 lbs so I recommend the following: -Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets for Class A Motorhomes # RM33RR -Roadmaster Rear Anti-Sway Bar - 1-1/2" Diameter # RM-1139-146 -Roadmaster Front Anti-Sway Bar - 1-3/4" Diameter # RM-1139-148 If you want to add air bags you can using the # AL88240 for the front and # AL57344 for the rear. However, I recommend using...
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    Hi Bob; since there is less stability at the rear of your 2013 Thor ACE 30.1 the rear anti-sway bar will have the greatest impact. The correct part for your motorhome is the Roadmaster Rear Anti-Sway Bar # RM-1139-146. It sounds like you plan on adding the front later so for that you will need the # RM-1139-148. The combination of the two will give you the best results.
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    Thanks for all of the info on your motorhome as that makes pick out the correct sway bars for it very easy. The correct rear sway bar for your 2018 Winnebago Vista on a F-53 18k chassis is the part # RM-1139-146. The correct front bar would then be the part # RM-1139-148. No extra or longer bolts would be needed. To complete your ride quality improvements you might also want a steering stabilizer like the part # RM-RBK22-RSSA which is a confirmed fit as well. With better sway bars and...
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    On your 2015 Thor ACE motorhome on Ford F53 chassis, the size of the vehicle often will have the effects you mentioned. The best solution is to add Anti-sway bars and a steering stabilizer. I recommend adding the Roadmaster Rear Anti-Sway Bar for Motor Homes # RM-1139-145 first as the rear sway is what you feel the most when crosswinds and passing semi trucks come and this model is the correct fit for your vehicle weight. This system mounts to the rear axle and the frame to balance the...
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    For your 2011 Forest River Georgetown Class A Motorhome with V10, you have a Ford F53 chassis and the Triton engine so I have exactly what you need. There are a few products that will greatly help with your handling and sway control, so I'll give them in the order that will give you the most help, but both can be used together for the best ride. I recommend first installing the Roadmaster Rear Anti-Sway Bar for Motorhomes # RM-1139-146. This product is rated for your GVWR and fits coaches...
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    The best option by far for your 2016 Thor Hurricane motorhome, built on a Ford F-53 chassis, are anti-sway bars. SumoSprings are a decent option that can help when the back-and-forth sway starts, but for the most control, your best suspension enhancement is - in order - a rear anti-sway bar, front anti-sway bar, and steering stabilizer. Rear anti-sway bars are so effective because they are a vast improvement over the OEM sway bars and their placement at the rear of the vehicle allows for...
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    You are correct that the F-53 chassis like what you have on your 2017 Thor A.C.E. RV is known for having some sway issues on the road. This can be greatly improved by adding a front and rear anti-sway bar to the chassis which will help to balance weight transfer and reduce body roll. For your Thor A.C.E. I recommend the Roadmaster Anti-Sway Bar # RM-1139-146 for the rear axle and the Roadmaster Anti-Sway Bar # RM-1139-148 for the front. All the needed mounting hardware is included with...
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    Hey Salvatore, thanks for reaching out! We have some replacement rear anti-sway bars to fit your 2012 Ford F-53 chassis, but it doesn't look like Roadmaster has any end links that work with OEM sway bars - they only have bushing upgrade kits. If you're wanting/needing to upgrade the whole anti-sway bar then you'll need the following depending on the GVWR of your motorhome: - Under 33' and 18,000 lbs # RM-1139-146 - 18,001-21,999 lbs # RM-1139-145 - 1-3/4" Bar and Over 22,000 lbs #...
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    It sounds like you're looking for some enhancements to help improve the ride quality in your 2014 Thor ACE 30.1 Motorhome. If this is the case I highly recommend starting with the Roadmaster Reflex Steering Stabilizer # RM-RBK22-RSSA, which is a confirmed fit for your RV's Ford F-53 chassis and 18,000 pound GVWR. This is going to mount between the steering mechanism and chassis to create a tight connection which will drastically reduce wander and quickly correct any oversteering. From...
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    Yes, the Roadmaster Rear Anti-Sway Bar for Motor Homes, # RM-1139-146 will work on your 2017 Hurricane 31S with the 2016 Ford F53 Chassis with either a V8 or a V10. The anti-sway bar will use the weight of the axle as a brace against the chassis so that pressure to one side of the motor home is countered by the sway bar. It minimizes the side-to-side movement that cargo shift, wind or passing trucks can cause. On some applications longer u-bolts are required to install this kit. For square-end...
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  • Sway Bar Recommendation for 2016 Forrest River FR3 30DS
    I did some checking and it looks like your 2016 Forrest River FR3 30DS is built on an 18k chassis so for sway bars you'd want the # RM-1139-146 for the rear and then for the front # RM-1139-148.
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