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Heavy loads and long wheelbases can make any rig feel like it’s fighting physics through turns. The solid 1-5/16" diameter 4140 chromoly steel bar ties the rear axle to the chassis so side-to-side sway stays in check. Three adjustment holes let you tune stiffness for your load or driving style, giving you confident control when towing or hauling.
When crosswinds or passing trucks push against you, this setup keeps things steady. The design minimizes body roll and side-to-side motion so the ride stays level and predictable. Even on uneven roads or during quick maneuvers, the bar helps reduce driver fatigue by cutting out constant steering corrections.
Instead of soft rubber, the polyurethane bushings resist oil, gasoline, and ozone, keeping their shape and support over time. That means less wear and more consistent performance. The bar’s silver vein hammer-tone powder coat and black powder-coated brackets and end links stand up to corrosion and rough conditions, staying strong year after year.
Installation is straightforward with zinc-plated mounting hardware, instructions, and bushing lubricant included. There’s no drilling required—just a solid bolt-on setup that replaces or adds to your factory rear anti-sway bar for immediate handling improvement.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello neighbors, it's Brad here at etrailer, and today I'm with Vern from Hellwig, and we have some sway bars here and I've put sway bars on my own personal vehicles for kind of more of a motor sport feel. And so something like this makes a world of difference. First turn, just everyday driving. But I've also installed larger ones. This is for an F53 RV chassis and you wouldn't expect an RV to make a huge difference with sway bars or think about performance, but they're top heavy. And the first thing you notice as soon as you put one of these on, just stabilize it.
So what exactly does a sway bar do You know, a sway bar really works to keep a vehicle level at all time. And a level vehicle is a safe vehicle. So you have, when you go into a corner or hit a curb, going over a curb, your vehicle wants to go side to side. And that sway bar actively works to bring you back to level every time. So how does one take a sway bar and get it mounted up to their vehicle So typically, it's a pretty simple.
It mounts in four places. So you can see here, here is the sway bar, it mounts to the axle and then at the end it mounts with end lengths to the frame of the vehicle. So for instance, the end link would attach to the end of the sway bar and this would attach to the frame. So at that point it's mounted in four places, it's secure and it works, the sway bar moves with the frame rolling on the vehicle. So how does this have movement As the vehicle rolls, the sway bar is really a giant spring that wants to return to levels.
So as the vehicle rolls from side to side, it works to bring it, the spring action works to bring it right back to the level place. So is it squeaky at all or is there any road noise that comes from it You know, they come from the factory with rubber bushings. Every vehicle is a front sway bar. It comes with rubber bushings. Rubber bushings are great for when they're brand new, but rubber deteriorates.
Hellwig supplies in every kit. Urethane bushings with bushing grease. And when you mount it on there, the biggest problem with polyurethane bushings is when they dry out, they squeak. When have a hammer tone finish here and it really has little divots in it. And when you grease these up and put the polyurethane bushing on it, they really do a great job of holding that grease in there forever. You should never have to re-grease it there. So there's a rhyme and reason to our hammer tone finish. Brad So it creates little pockets, basically, to hold that lubricant in rather than pushing it out and drying out. Vern Correct, a smooth finish would, it just washes out of there pretty fast. So that's why we do the hammer tone finish. Now sway bars, I'm a big fan of them, but many people want to use jounce bumpers or airbags to kind of counteract that sway. What's your take on that We still helper springs and one thing that a jounce bumper or a helper spring can do is they can help limit sway. So what they do is they bring it to it and they come to a stop. So it does limit the sway, but only a sway bar actively works to bring it back to level. We wish we had a product that did both, but you really need a sway bar to bring it back to level. So a sway bar's actively always there fighting against it whereas your downs bumper you do have to close that gap before it engages. And really, I mean it does limit how far the vehicle will sway over. So they can still use jounce bumpers or airbags in conjunction with an aftermarket sway bar. Yeah, absolutely. And if somebody wanted to run SumoSprings or even our helper springs, they work well together. Now Hellwig also offers the Big Wig series. What is that The Big Wig series is a larger diameter sway bar really designed for the 3/4-ton and one ton truck crowd. The Big Wig really shines when you have a cab over camper or anything that creates a vehicle to be top heavy and sway more so it's really designed for a working truck. You can still use the Big Wig even if you don't tow or haul loads too. It's our adjustability. Let's use the Big Wig for that. In fact, anytime somebody has a one ton truck, I always recommend the Big Wig. So adding sway bars, just kind of to wrap everything up. I've seen the difference. I've seen the reviews I've gotten to install sway bars and see before and after. It makes a world of difference. Hard to quantify. It's something, a feel that only the driver feels and it really makes a world of difference. So if you have that top heavy feel, whether it be from a muscle car and you just want a little bit better turn in, a little bit more tight feeling and just kind of a nice planted car for more grip, or you wanna make your RV just a better driving experience and everything in between, Hellwig probably has a product for you. You know, the one thing we hear over and over is when somebody puts on a sway bar, the difference is night and day. It truly is. And once you get one installed, you'll see we're not just talking. This is truly an awesome product. And the great part about suspension additives like this is, once it's installed, there's really no real maintenance and you get the benefits of it every time you drive. So Verne, thank you so much for coming out here and representing Hellwig and giving us a little bit of a insight into sway bars. Well, we appreciate being here and look forward to taking care of your neighbors.
Ratings & Reviews

Kate F.
6/25/2026
Thanks for the great review Joseph, even though your order was not the greatest experience, and realizing that we are not UPS. Paula is great! I sent your review over to her and she appreciates your kind words. On a different note, I have the Hellwig on our 2024 Silverado 1500, made a huge difference with that body roll! You will definitely notice a great difference when you get it installed.

Kate F.
4/23/2026
Wow, 205,000 miles and handling better than new. That is the kind of glow-up we love to hear about Greg! It sounds like you really dialed in your setup piece by piece, and it paid off in a big way. Pairing the Timbren and RAS with upgraded sway bars is a serious combination, especially for hauling trailers like yours. That added stability and confidence in crosswinds makes a big difference on long trips. We also appreciate you calling out the fitment note on the Hellwig kit. That is very helpful for others getting set up. Glad our team could help get you squared away there. So where are you off to for the next adventure?

Gwendolyn Y.
4/14/2025
That's awesome to hear! Truly sounds like a no brainer upgrade :)

D. R.
4/14/2026
No problem. Completely satisfied

Brooke M.
3/31/2025
Glad to hear it all arrived safe and sound! We'd love to know what you think once you get some time to use the new Hellwig. [I love your porch, by the way! The brick and potted flowers are charming :)]

Brooke M.
3/17/2025
Glad to hear that, Chris - thats awesome you tackled this yourself! Have you done a lot of installs?



Mike L.
3/25/2026
You're very welcome Michael, I'm glad we could help!

Mike L.
6/23/2026
Thanks Michael, I'm happy we could help out!
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Wayne
9/4/2026
This is one of the best modifications I have made to my F350 carrying an Arctic Fox 990. Totally improved the ride on corners and rough roads.