bing tracking image
  1. Anti-Sway Bars
  2. Hellwig
  3. Anti-Sway Bar
  4. Rear
  5. 1-1/2 Inch Diameter
  6. Mounting Hardware Included
THIS ITEM IS NOT A FIT FOR
2021 Ford Expedition
Special Savings on Select Hellwig Items.
Hellwig

Hellwig Rear Anti-Sway Bar - 1-1/2" Diameter

$368.99
Retail:$585.67
You Save: $216.68
Anti-Sway Bars
Not Confirmed to Fit

2021 Ford Expedition

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Instant Rebate
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

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.

Product Images

Need help with installation?
Locate installers near me
Minimize sway and driver fatigue by improving the stability and driveability of your Sprinter. Solid, 1-1/2" chromoly bar mounts to the rear axle and to the frame to balance weight transfer and reduce body roll. Includes mounting hardware. 1-800-940-8924 to order Hellwig anti-sway bars part number HE77YR or order online at etrailer.com. Free expert support on all Hellwig products. Great prices and Fastest Shipping for Hellwig Rear Anti-Sway Bar - 1-1/2" Diameter. Anti-Sway Bars reviews from real customers.
  • All Info
  • Reviews (363)
  • Q & A (0)
  • Videos (3)
  • Photos

Hellwig Anti-Sway Bars

Highlights

  • Custom Fit for Your Vehicle: Tuned to your suspension for better control and stability.
  • Reduces Sway: Solid 1-1/2" chromoly bar cuts side-to-side roll for steadier control.
  • Handles Crosswinds: Keeps your ride level against gusts, passing traffic, and shifting cargo.
  • Less Driver Fatigue: Minimizes steering effort so long drives feel smoother and easier.
  • Levels the Ride: Balances weight transfer for confident turns and even handling on rough roads.
  • Uses Existing Connections: Bolts to rear axle and frame with included zinc-plated hardware.
Made in USA

Features to know about

Better Control on the Road: 1-1/2" Rear Bar Reduces Body Roll

A solid 1-1/2" diameter 4140 chromoly steel bar ties the rear axle to the chassis to keep everything level and steady. By cutting down side-to-side movement, it helps your rig stay planted through turns and tight maneuvers. You’ll feel a big difference in stability and confidence, especially when the road gets twisty or uneven.

Less Stress in Wind and Passing Traffic: Stable, Predictable Handling

Crosswinds and big rigs don’t have to throw you around. This bar braces the frame with the weight of the axle so it resists sway when the wind kicks up or when you’re passed on the highway. The ride stays level, the steering feels steady, and you’re not fighting to stay in your lane mile after mile.

Built for the Long Haul: Chromoly Strength and Poly Bushings

The 4140 chromoly steel construction gives this sway bar serious strength, and the silver vein hammer-tone powder coat keeps corrosion at bay. Polyurethane bushings stand up to oil, gasoline, and ozone, so they don’t squish out or wear down like rubber. That means tighter control and consistent support over time.

Straightforward Install: Hardware and Lube Included, No Drilling Required

Everything you need comes in the box—zinc-plated mounting hardware, bushing lubricant, and clear instructions. It’s a bolt-on setup with no drilling needed, built to work alongside most aftermarket suspension add-ons. You’ll be back on the road with a more stable, confident ride in no time.

Specs

Dimensions

  • Bar diameter: 1-1/2"

Warranty

  • Limited lifetime warranty

7777 Hellwig Rear Anti-Sway Bar - 1-1/2" Diameter

Item # HE77YR

Installation Details HE77YR Installation instructions

This Product Fits The Following Vehicles




Video of Hellwig Rear Anti-Sway Bar - 1-1/2" Diameter
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Hellwig Big Wig Rear Anti-Sway Bar Manufacturer Discussion

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.

Customer Satisfaction Score:

Ratings & Reviews

4.7

362 reviews
Review sort icon
Minimize sway and driver fatigue by improving the stability and driveability of your Sprinter. Solid, 1-1/2" chromoly bar mounts to the rear axle and to the frame to balance weight transfer and reduce body roll. Includes mounting hardware.

by:



by:



by:



by:



by:



by:



by:

Excellent , easy to install



by:



by:



by:

Unit is in storage so not installed yet. But it looks great. i’m sure it will work as intended



by:

Thank You etrailer for your prompt shipping and Expert advice and videos!!



by:

Quick shipping and best price.



by:

The product was easy to install and fit perfect. I have had Hellwig products before and look forward to 1000 miles test drive next week.

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

2/26/2025

Hey Jeffrey. Where are you headed to? I look forward to hearing your thoughts on how the Hellwig holds up. Have a safe drive!



by:

Great upgrade to a Mercedes Motor Home for better sway control



by:

Easy upgrade, well worth the money/time



by:

Box was open, but everything was still there. As usual the transaction was great



by:

Very helpful Customer Service! Arrive in 4 days,



by:

Just finished installing it was easy great product fit perfectly



by:

Fits, seems to be an improvement over my previous 1-3/8” sway bar.



by:

Made a noticeable difference in sway and top heaviness



by:

Took most of my sway problem away. Very pleased with the product.



by:

Knowledgeable sales staff , quick to process and ship order , no shipping fee and arrived as expected .

Martin profile picture

Martin

9/28/2025

Excellent ! Very thrilled with quality and performance . Now my rig handles much better and the wife is not getting car sickness .



by:

Such a quality piece. It was packed so well, too!

etTrailer is always a pleasure to do business with. So attentive.



by:

Was delivered in excellent condition. Was a fairly easy installation but awkward for one person. Working under rv is not easy.



by:

This with sumo front and rear and Bilstein shocks bought locally improved the stability of our sprinter class C by multiple factors.
The handling went from sucking to this is pretty good. Why did we wait 2 years?

Mike L. profile picture
Etrailer Expert

Mike L.

6/17/2026

That's awesome Jeff! Glad to hear your setup is working well for you!


25
25

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

  • How to Fix Sway on Highway in 2020 Delano with Mercedes 3500 Chassis
    Hi Todd, I know exactly the feeling you’re describing, and you’re definitely not alone. That floaty, pushy feeling at highway speeds, especially when trucks pass, is really common on the Sprinter 3500 chassis with a taller coach like your Tiburon, and it can make for a pretty tense drive. You’re absolutely looking in the right direction with the upgrades you mentioned. The biggest improvement usually comes from adding a rear sway bar first, and for your setup I would start with the Hellwig...
    view full answer...
  • Rear Sway Bar Upgrade that Fits 2021 Tiffin Wayfarer 25Tw Sprinter 3500XD Chassis
    Hey Carolyn, the XD versions of the Sprinter 3500 chassis are the dually versions so you would need to make sure the sway bar you have is compatible with dually models. For example the Hellwig # HE77YR is a bar that does work with the dually models and would be correct fit. Do you know which bar you have?
    view full answer...
  • Is Drilling Required For Installation Of Roadmaster Front Anti-Sway Bar on 2026 Jayco Melbourne 24L
    Hey Bill, welcome back! Installation of the Roadmaster Front Anti-Sway Bar # RM24RF does require drilling two 1/2" holes to mount the skid plate. These holes are in the crossmember, not in the main frame rails. The included hardware and backing plates clamp everything together so it won’t weaken the frame and keeps you within Mercedes guidelines. How are you liking the SnapPads?
    view full answer...
  • Do You Carry Super Springs Part Number SSA56 for My 2022 Mercedes Sprinter 3500?
    Hello Ed, I am sorry for the delay in response, we had quite the spike in questions recently. We do have the SuperSprings part number SSA56, it would be our part SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SS69PV which I am showing will fit wonderfully on your 2022 Mercedes-Benz Sprinter 3500. The SuperSprings Custom Suspension Stabilizer # SS69PV will work with the Timbren bump stops # TMBRSP35A that you already have installed on the rear, the Hellwig Rear Anti-Sway...
    view full answer...

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


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Dustin K
Video Edited:
Dustin K
Employee John S
Video Edited:
John S
Employee Michael B
Updated by:
Michael B
Employee Andy C
Installed by:
Andy C
Employee Sabrina W
Written by:
Sabrina W

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. Let us know if anything is missing or if you have any questions.