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Few things make a drive more tiring than feeling a big lean through every turn. The 1-3/4" diameter Roadmaster rear anti-sway bar ties the rear axle to the chassis to balance weight transfer and cut down on side-to-side rocking. Built from thick 4140 chromoly steel, it’s stronger and stiffer than standard 1020 steel bars, giving the suspension real authority in corners and quick maneuvers. The result is a level, planted feel that makes highway curves and sharp turns far more controlled.
Crosswinds and big rigs shouldn’t have you fighting the wheel. This bar braces the frame with the weight of the rear axle, helping the vehicle stay stable when pressure shifts to one side. By cutting sway, it reduces the steering corrections you need to make when wind hits or when cargo moves. You hold your line easier, road feel improves, and the ride stays level no matter what’s happening around you.
Long stretches of highway can wear you out when you’re constantly correcting for sway. This setup keeps things steady so you can relax at the wheel. The bar minimizes the effort it takes to keep your vehicle tracking straight, especially on uneven roads or in gusty conditions. That steadiness translates into less strain and a more comfortable drive mile after mile.
This isn’t a lightweight piece of tubing—it’s a 4140 chromoly steel bar engineered for strength and long-term durability. Polyurethane bushings replace the usual rubber, shrugging off oil, gasoline, and ozone so they don’t deform or wear down quickly. Less flex in the system keeps support consistent over time.
Getting better stability doesn’t have to mean major fabrication. The Roadmaster rear anti-sway bar includes heavy-gauge mounting hardware, bushing lubricant, and easy-to-follow instructions. It bolts right on with no drilling and is designed to work alongside most suspension upgrades, making it an easy upgrade that pays off every time you hit the road.
Ratings & Reviews
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.
Michael
3/25/2026
After a year the system is working great. It has made the driving much safer and smoother.
Gwendolyn Y.
3/25/2026
Gwendolyn Y.
3/7/2025
Sounds like a much smoother drive, Riley! I looked up your camper to see how tall it is and I can see exactly why its called a Bigfoot. What's been your favorite place you've traveled to so far with the camper?
Riley
3/6/2026
The two Roadmastercsway bars weve been using continue to impress and perform like they did on day one. Driving back across the country with some days having stiff criswinds continually we rode comfortably and never had handling or steering issues. I remain adamant that these are undoubtedly the best products on the market for this application and welcome any questions. For reference my truck is a 2018 F350 crew cab DRW, 6.7 diesel 4x4 long bed with Bigfoot 3000 series truck camper. Get the Roadmasters!
Brooke M.
6/18/2025
Super happy to hear that, Kevin! Thanks for including the photos, too. Would you have any tips or tricks for any future readers about how to get around the obstacle you mentioned?
Brooke M.
6/22/2025
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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!