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This 1-1/2" diameter rear anti-sway bar ties the rear axle to the chassis to keep the vehicle level through corners and quick maneuvers. The bar balances weight transfer and reduces body roll, so it feels more planted even on uneven roads or in tight turns. You’ll notice steadier tracking when the wind picks up or when heavy loads shift as you drive.
When you’re holding the wheel for hours, fighting sway can wear you down fast. This setup minimizes side-to-side movement so the vehicle stays straight in crosswinds or when big rigs pass by. That stability means you make fewer corrections, stay more relaxed behind the wheel, and end the day less tired.
The bar is made from thick 4140 chromoly steel, a hardened chromium-molybdenum alloy that’s far stronger than standard 1020 steel. Its larger diameter boosts torsional stiffness by nearly 30 percent compared to weaker stock setups. The result is a system that resists flex, holds up under load, and keeps sway in check for the long haul.
Instead of soft rubber, this kit uses polyurethane bushings that stand up to oil, gasoline, and ozone without breaking down. They keep the system tight and consistent over time. The included heavy-gauge mounting hardware, end link kit, and bushing lubricant round out a setup that’s built to last and stay quiet mile after mile.
You don’t have to cut or weld anything to mount it. Some drilling is required but it is minimal. The bar and axle bracket kit install directly to the rear axle and frame using 3-1/2"-wide by 5-7/8"-tall U-bolts with 1/2"-20 fine threads and 3" threaded length. Everything needed for installation is in the box, so the upgrade is straightforward and ready to go.
Ratings & Reviews
Matthew
10/7/2026
This is a complete game changer when using a truck camper Mine is an Arctic Fox 990. I would list this under a must have accessory when using a truck camper. Unloaded ride when you hit off camber bumps is slightly rougher, but hey its a Ram 3500 dually for hauling heavy stuff. Also the performance when carving twisty canyons with an empty truck is astonishing....Watch out Corvetts, here I come!
Jameson C.
10/7/2026
Fred
8/15/2026
Excellent it works great
Jerred H.
8/16/2026
Gwendolyn Y.
4/8/2025
No more white knuckling! That's awesome to hear, Kris. I'm glad that this bar helped so much so you can have a more relaxed drive :)
Kris
3/17/2026
I have taken a few trips with the Clatter Cabin now. It’s been enjoyable to drive. Since then I have replaced the exhaust from the engine back with 2 12 inch pipe. I was able to get the pre bent exhaust parts over the axle and clear your rear sway bar nicely. Now she purrrrs!
Kate F.
9/24/2025
Install looks great Steven! I can't wait for you to take it out for a spin so you can see the difference for yourself, it is amazing what a upgraded sway bar does to your ride, no more white knuckles for you, or your wife. What big stops do you have planned on your trip to the West Coast?
Ken
8/19/2025
No complaints with the handling. This is a good sway bar!
Jenny N.
6/25/2024
What I recommend is touching it up with a rust resistant paint like Rustoleum. We will be in contact with you about the damage. Please keep an eye on your email.
Leonard
6/22/2025
After a year and many miles I would give it a five star for sure. Made a great improvement over the stock anti-sway bar. With the rear and front RoadMaster anti-sway along with the RoadMaster steering stabilizer the E-450 33 foot class C motorhome drives like a dream. I highly recommend these three products. If not all at once then this order, 1st rear anti sway bar then 2nd front and then the steering stabilizer with the spring on it.
Dan K.
4/22/2026
wondaful! highly recommended.
Gwendolyn Y.
4/28/2025
High-five on the install, Curtis! Also, thanks for sharing all the pictures and showing all the angles of the sway bar. They are really helpful for anyone looking to tackle this install themselves at home!
Brooke M.
6/17/2025
So glad to hear that, Dimitrios! Thanks for including a photo, too.
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Ian M.
8/14/2020
Great, would do it again without hesitation.