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  1. Anti-Sway Bars
  2. Roadmaster
  3. Steering Stabilizer
  4. Mounting Hardware Included
THIS ITEM IS NOT A FIT FOR
2003 Ford Focus
Roadmaster

Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets for Jeep Wrangler JK

Part Number: RM39RR
In Stock
$585.00
Anti-Sway Bars
Not Confirmed to Fit

2003 Ford Focus

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Get responsive steering for your Jeep with this gas spring stabilizer. No more wandering or rut tracking. Also lets you back up your rig without disconnecting your tow bar when towing behind your RV. Includes custom brackets. 1-800-940-8924 to order Roadmaster anti-sway bars part number RM39RR or order online at etrailer.com. Free expert support on all Roadmaster products. Great prices and Fastest Shipping for Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets for Jeep Wrangler JK. Anti-Sway Bars reviews from real customers.
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  • Reviews (387)
  • Q & A (0)
  • Videos (2)
  • Photos

Roadmaster Anti-Sway Bars - RM39RR

Highlights

  • Custom Fit for Your Vehicle: Tuned to your suspension for better control and stability.
  • Stops Wandering: Nitrogen-charged gas spring keeps steering centered and controlled.
  • Prevents Death Wobble: Proactive stabilizer halts front-end shudder before it begins.
  • Handles Crosswinds: Maintains control through ruts, edging, and gusty highway conditions.
  • Backs Up Easily: Lets you reverse while flat towing without risk of jackknifing.
  • Simple Bolt-On Fit: Uses factory mounting points and custom brackets—no drilling needed.
Made in USA

Features to know about

Better Control on the Highway: Gas Spring Keeps Steering Centered

When your steering starts to wander or pull, holding a straight line can turn into a fight. The Exact Center uses a nitrogen-charged tandem gas spring that applies full force right when you need it. Instead of waiting for movement to happen, it keeps your steering centered from the start. That means more responsive handling, less rut tracking, and a steady feel through crosswinds and road edging.

Jeep climbing rocky terrain demonstrating Roadmaster Exact Center Steering Stabilizer reducing death wobble

Stops the “Death Wobble” Before It Starts: Constant Centering Force

That violent front-end shake that kicks in after a bump or pothole doesn’t stand a chance here. Because the Exact Center is always active, it prevents unwanted movement instead of reacting after the fact. The gas spring constantly works to hold your steering true, cutting out wobble and wander so the ride stays calm and predictable.

Safer Flat Towing: Back Up Without Jackknifing

Most setups make backing up your flat-towed rig a gamble. This stabilizer changes that. Its gas spring keeps the front tires in line when reversing, reducing the chance of jackknifing and protecting your tow bar and connections. It’s a simple way to make towing and backing up smoother and less stressful.

Jeep and RV in a jackknife position illustrating dangers of backing up without Roadmaster Exact Center Steering Stabilizer

RV towing a Jeep equipped with Roadmaster Exact Center Steering Stabilizer enabling safe reverse towing

Built Tough for Long Hauls: Heavy-Duty Stainless Construction

Roadmaster built this stabilizer to handle serious use. The stainless steel body stands up to weather, grit, and vibration over time. With custom mounting brackets and no drilling or welding needed, it bolts on using factory holes for a secure, straightforward install that’s ready for miles of steady driving.

Specs

Spring length (center of bushing to center of bushing): 21"
Includes custom mounting brackets
Heavy-duty stainless steel construction
Limited lifetime warranty

Specs

Dimensions

  • Spring length (from center of bushing to center of bushing): 21"

Warranty

  • Limited lifetime warranty

Note

  • Installation note: It's important that worn steering components are addressed before installing this kit. Also, if you have a highly modified Jeep for off-roading or rock crawling, you may not be able to install this stabilizer.
  • Internal components of Roadmaster Exact Center Steering Stabilizer showing nitrogen-charged tandem gas spring
  • Comparison chart showing proactive Roadmaster Exact Center Steering Stabilizer versus reactive standard stabilizers

481110 Roadmaster Exact Center Steering Stabilizer

ECB5 Custom Mounting Brackets for Roadmaster Exact Center Steering Stabilizer

Installation Details RM39RR Installation instructionsAlternate Instructions RM39RR Installation instructions

This Product Fits The Following Vehicles




Video of Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets for Jeep Wrangler JK
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Safely Backing Up While Flat Towing Your Jeep

Customer Satisfaction Score:

Ratings & Reviews

4.5

387 reviews
Review sort icon
Get responsive steering for your Jeep with this gas spring stabilizer. No more wandering or rut tracking. Also lets you back up your rig without disconnecting your tow bar when towing behind your RV. Includes custom brackets.

by:

Very surprised at how much it help improve the swaying when driving in heavy winds and with large Vehicles passing you. Would recommend anyone



by:

Hey RV'rs.... I upgraded from the Roadmaster stabilizer and the difference was phenomenal... Prince Edward county to Key West with minimal steering correcting



by:

This is one of the greatest additions to a Motorhome. I had purchased a new motorhome the day before a trip so I hadn't had time to install the stabilizer. After a 1000 mile trip fighting the wheel I had a chance to install it before the return trip. It was easy to install with the tool I had brought while at the campground and made the trip back much easier.



by:

Easy install and it makes an amazing difference. etrailer has great video tutorial on this. I installed on a Newmar Baystar that was difficult to drive, and made a night and day difference. Took maybe 4 hours including test drives. Be sure to drive before and find the center point on the steering wheel. I hit it the first time so no adjustment needed afterwards. But if needed, the fine adjustments are easy on this compared to the SafeTPlus in was considering.



by:

Fast reliable company



by:

Do not like how it handles with the center steer



by:

Speaking for myself, and in all honesty from my opinion and with experience using Exact Center Steering Stabilizer. Driving with the ECSS, I’ve found it will be useful on my Jeep being towed. I have several thousand miles on my Jeep, and found city driving okay, but steering you must keep your hands on the wheel. This also goes even more so on the highway. Just returned from a long trip out west to Yellowstone NP, towing a very small camper, and it was very difficult at times when driving only 65-70 mph, with special focus when on the highway when the highway makes direction turns, and really white knuckle both hands on wheel when the road isn’t smooth. As it turns out, on July 2, 2025, I removed the ECSS, and replaced with a normal steering stabilizer, and realize it’s much better, both city and highway driving. I also realize I shot over $400 on something I believed would work better, and I was wrong. The ECSS, may be good when your vehicle is towed, maybe even better on a smooth race track, but on my Jeep, it’s actually unsafe in my opinion and from my experience. I’m thinking more testing is needed, along with additional engineering with adjustments before I would spend that kind of money and knowing it will work first before wasting my money again. Long story short, I had focus on my driving the entire 4000 miles practically with white knuckles way too much, and because of this I missed most of the scenery with is the first time almost thats ever happened. Only bad weather did that before, and a damaged tie rod. I would not recommend the product to anyone, with the exceptions mentioned above. It’s not worth the amount I had to pay, and a mistake buying it. Hopefully you’re honest enough to accept my honesty and truth as I have experienced.
Regards,
Steve



by:

This it the second Roadmaster stabilizer I have purchased from Etrailer. Other was for our older 2011 motorhome and after having it I did not want to drive without 1. This is different than prior unit- big factor is so much lighter and easy to adjust, so far working perfectly…



by:

I stopped short of 5 stars because the instructions could be a lot clearer.



by:

Easy to install if you have the right tools, 3/4" torque wrench etc. Seems to be doing the job on smooth roads, our roads are terribly rutted and lots of frost heaves. Did not have to adjust after install.



by:

I installed the exact center myself. It took me about an hour due to a couple rusty bolts. Test Robin on some side roads and the main road today and I love it. Keeps me on the lane. I don’t have to play the wheel back-and-forth constantly. It doesn’t pop back to center as quuck as I thought it would, but maybe I just gotta get used to it. Definitely an improvement for a long trip.



by:

The motorhome drives so much easier now. I would recommend this if your on the fence.



by:

This has improved the steering significantly for our 2021 Jayco Redhawk 25R! It's almost incredible how much better it is. Can now hold the steering with one hand and does not pull in one direction. Huge improvement!



by:

Supper easy install takes about 1 1/2 hours and most definitely made a difference in the steering input and holding the road is definitely improved.



by:

I will have to wait until next year to install the stabilizer. I had to have the kingpins replaced in the Ford front end at 13,500 miles because parts were left out at the factory. We were not able to use the motorhome much this year.



by:

Made a world of difference. Installed on a Class C RV and was a marked improvement over the anemic OEM “steering stabilizer.” Very little adjustment required.



by:

Super easy install on a 2019 Leprechaun 319MB ,Class C RV. Hardest part was taking off the old hardware. Followed the instructions and test drove at 60mph and it drove totally straight and did not have to make any micro adjustments. A very well made product.



by:

Best investment I have made on this Motorhome. So much easier to drive and keep in it's lane.



by:

I had the road master exact center steering stabilizer installed on my RV and tried it out and it was perfect driving and maintaining position on the road way with out drifting. Although my tow vehicle was not connected I thought it felt good without out it a believe it will be fine.



by:

We installed the Roadmaster steering stabilizer on our 2018 Thor Chateau 24F motorhome. The drifting issue we'd experienced was significantly improved making driving easier and less stressful.



by:

Great product! My installer Martins Auto Tech did a fantastic job!!! Jeff Martin the owner took the extra time to make sure everything was aligned correctly and took the time to explain why he liked the product we chose from etrailer! If i ever needed or will need any work done to my RV. I would use etrailer and Jeff Martins Auto Tech in Hollywood Maryland! Btw your source page led us to Martins Auto Tech with great reviews! Thank you again!



by:

This one of the best if not the best exact center steering stabilizer on the market. Steering my 38 foot class A gas motorhome is simply a breeze. I use to fight my steering wheel to keep my motorhome straight on every type of road. I use to brace and prepare to input multiple steering corrections whenever a Semi truck was about to pass me. With my exact center steering stabilizer installed plus the addition of air bags (front and rear) driving my motorhome is now as easy as driving my F-150 super duty. The exact center steering stabilizer alone improved all of the white knuckle constant steering adjustments i was experiencing. The air bags prevent the side to side movements from cross winds and when a Semi truck passes my motorhome. The vast improvement is the same with or without the toad. This was by far the most cost effective, easily installed, and immediate improvement I have made to my 2015 Coachmen Encounter 37LS Motorhome.



by:

First road trip with our new Integra Odyssey from New York to Key West. It was a nightmare driving this thing down south! Ordered this Roadmaster and had it shipped to my friend's house in Florida. We installed it in about an hour and it is a night and day difference. Sway is almost completely gone and you can let go of the wheel and it stays centered. No more white knuckle driving!



by:

Item arrived quickly the video on the site actually helped with the installation and it was very simple, installation is on a 2023 Nexus Wraith 34w on the international MV 670 chassis



by:

The Exact Center Stabilizer itself is very good. The bracket that was sent only worked on one side of vehicle. Instruction say it is universal for either side mounting. That is incorrect for the kit I received. The stabilizer itself would have fit better on my 2022 F53 if it were about 2 inches longer.


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

  • Roadmaster Exact Center Steering Stabilizers And Custom Mounting Brackets For a 2012 Jeep Wrangler
    For your 2012 Jeep Wrangler, you are going to want the: -Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets for Jeep Wrangler JK # RM39RR if you have 33" to 37" tires and/or a lift kit, Or if you have stock tires up to 32" you can use the: -Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets for Jeep Wrangler JK # RM84RR. Both of these kits contain the Roadmaster Exact Center Steering Stabilizer as well as the needed custom mounting brackets.
    view full answer...
  • How To Prevent a Death Wobble On a 2018 Jeep Wrangler JK Unlimited Sport
    For your 2018 Jeep Wrangler JK Unlimited Sport we have the Roadmaster Exact Center Steering Stabilizer # RM84RR for stock tires up to 32" diameter. For Larger 33"-37" tires you would want the Stabilizer # RM39RR. This will will prevent the dreaded death wobble as there is not a wiring harness option I am aware of.
    view full answer...
  • Roamdaster Exact Center Steering Stabilizers For A 2021 Jeep Wrangler JL
    Roadmaster has two options for a 2021 Jeep Wrangler JL depending on the wheel size. The Roadmaster Exact Center Steering Stabilizer w/ Custom Brackets for Jeep Wrangler JL and Gladiator JT # RM99RR will work with stock tires up to 32" in size. For Wrangler JLs with 33 to 37 inch tires and/or lift kits only the Custom Mounting Brackets # RM34RR and Roadmaster Exact Center Steering Stabilizer # RM27RR can be used. There is a tech note on Roadmaster's fituide stating that these will not...
    view full answer...
  • How to Find any Vehicle's Flat Towing Steps
    We actually don't do a lot of flat towing setups on bigger trucks so we don't have a lot of experience with which happen to be easier or better but what I can tell you is how to determine pretty easily if one of the trucks you are considering in the future can be flat towable. Google the year/make/model of the truck plus "owners manual" so that you can pull up an online manual. Once open scroll down to the very end to get to the index and then look under the Towing heading for "recreational...
    view full answer...

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


Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Sabrina W
Updated by:
Sabrina W
Employee Andy C
Installed by:
Andy C

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