To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
If your rig leans hard into corners or drifts in crosswinds, this rear anti-sway bar keeps things tight and predictable. The 1-1/2" diameter bar ties the rear axle to the chassis to balance out weight transfer and cut down on body roll. You’ll feel the difference when you take a curve or pass a semi—the ride stays steady and the steering feels more planted.
Fighting constant sway can wear you out. This bar helps keep your line straight on windy highways or uneven pavement by minimizing side-to-side movement. With a more balanced rear setup, you’re not making constant corrections, so long drives feel easier and less tiring.
Strength and consistency matter here. The bar is made from thick 4140 chromoly steel, which is tougher than standard 1020 steel and nearly 30% better at resisting sway. It uses polyurethane bushings that hold up to oil, gasoline, and ozone, so they don’t squish out or wear down like rubber. That means steadier support and longer service life.
No drilling or frame mods needed. The kit mounts to the rear axle and chassis using the included heavy-gauge hardware and bushing lubricant. It’s designed to clear most common suspension add-ons, so it fits right into your setup without extra hassle.
Customer Satisfaction Score:
92% were satisfied with this product
8% of customers were not satisfied
Ratings & Reviews
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
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.
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.
After waiting 3 weeks the swaybar kit was drop-shipped from the factory. Received and discovered the bushing inserts were the wrong size (too small) for the bolts that were sent. Contacted Roadmaster support and provided them a photo and invoice as requested. The replacement inserts were approved and shipped out. I got metric bolts to go with the inserts I received. I will save the replacements for additional replacements.
The install was fairly straight forward.
Haven't had a chance to tow the 5th-wheel yet.
The anti sway bar is a big improvement when the truck bed camper is on. The installation took a bit longer than expected because the frame brackets don’t fit around an aftermarket B&W gooseneck hitch. I had to fabricate new top brackets and drill out the bottom brackets to widen the bolt pattern. Keep this in mind if you have a gooseneck hitch.
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.
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.
Excellent high quality product made a big difference in handling with heavy Artic Fox camper
Give poor rating regarding installation instructions
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.
Poor direction quality product.
Easy install and made a big difference when hauling my truck camper
Much better handling than the stock sway bar. Pretty easy install.
Fast trouble free installation. It took less than an hour to install. NOTE- both etrailer and Roadmaster show this fitting 2017-21 F 350 DRW trucks with no listing for 22's & 23's. I installed this on a 2023 F 350 and it was the exact shape of the OEM bar. I haven't tried it with the Truck camper yet but I'm sure there will be an improvement.
This sway bar made a huge impact on the stability of our F350 when hauling our large 1172 Lance pick up camper. You can’t imagine until you try it how well this improves the ride and air bags alone won’t stop the sway of a large camper.
Installed road master sway bar in 2019 Ford Dooley truck with in truck camper what a difference. Took the truck and camper down to Florida but there’s some very tough thunderstorms in Georgia . Would highly recommend it anybody with a high profile truck or camper
Made a noticeable difference reducing body roll with 4000lb camper in bed.
Very easy to install I removed the factory and I sway bar and put this one in place can really feel the difference. I have a Lance camper that weighs 3900 lb.
I haul a heavy truck camper on an F350 drw. Sway is much reduced. The side to side rocking has been reduced about 80%.
One other issue I had before the new sway bar was with the steering. I think I was getting so much side to side rocking that it was affecting the steering. It kind of felt like “bump steer” that can occur when a 4X4 is lifted and the steering geometry is screwed up, so when the front suspension articulates, the front wheels turn slightly to one side or the other. That problem is completely gone now with the new Roadmaster sway bar.
I’m very happy with the new sway bar. It does what it is advertised to do and what others have said about it on the Internet. I wished I had bought it sooner, it would have made the interstate driving much easier.
Info for this part was:
At etrailer 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.
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.