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  1. Anti-Sway Bars
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  3. Anti-Sway Bar
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  5. 1-1/2 Inch Diameter
  6. Mounting Hardware Included
THIS ITEM IS NOT A FIT FOR
2004 Audi RS4
Hellwig

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

Part Number: HE78RR
403 Reviews | 27 Questions
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$558.62
Retail:$797.99
You Save: $239.37
 Anti-Sway Bars
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2004 Audi RS4

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hellwig anti-sway bars rear factory end link
hellwig anti-sway bars factory end link no drilling required he78rr
hellwig anti-sway bars bar no drilling required
hellwig anti-sway bars bar no drilling required rear - 1-1/2 inch diameter
hellwig anti-sway bars rear factory end link he78rr
hellwig anti-sway bars rear no drilling required he78rr

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2024 ford e-series cutaway anti-sway bars hellwig rear factory end link on a vehicle
2024 ford e-series cutaway anti-sway bars hellwig bar no drilling required on a vehicle
2024 ford e-series cutaway anti-sway bars hellwig factory end link no drilling required he78rr
2024 ford e-series cutaway anti-sway bars hellwig bar no drilling required rear - 1-1/2 inch diameter
2024 ford e-series cutaway anti-sway bars hellwig bar rear on a vehicle
2024 ford e-series cutaway anti-sway bars hellwig bar factory end link rear - 1-1/2 inch diameter
2024 ford e-series cutaway anti-sway bars hellwig rear no drilling required he78rr
2024 ford e-series cutaway anti-sway bars hellwig rear factory end link he78rr

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Minimize sway and driver fatigue by improving the stability and driveability of your truck. 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 HE78RR 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.
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Hellwig Anti-Sway Bars - HE78RR

Highlights

  • Custom Fit for Your Vehicle: Tuned to your suspension for better control and stability.
  • Reduces Sway: Solid 1-1/2" chromoly bar steadies your rear axle to cut side-to-side movement.
  • Handles Crosswinds: Keeps your vehicle level against gusts, passing trucks, and shifting loads.
  • Less Driver Fatigue: Cuts steering corrections so long drives feel smoother and more controlled.
  • Levels the Ride: Balances weight transfer for stable cornering and a more predictable feel.
  • Uses Existing Connections: Bolts to factory points with included zinc-plated hardware, no drilling.
Made in USA

Features to know about

More Control on the Road: Solid 1-1/2" Chromoly Rear Bar Reduces Body Roll

Big vehicles tend to sway when the weight shifts through turns or sudden maneuvers. This solid 1-1/2" diameter 4140 chromoly steel bar ties the rear axle to the chassis to keep things level and stable. The result is a smoother, more controlled ride with less side-to-side motion when cornering or changing lanes. With the weight balanced across the frame, you can drive with more confidence and less steering correction.

Less Effort Behind the Wheel: Stable, Predictable Handling in Crosswinds

Crosswinds and passing traffic don’t have to make you fight the wheel. By bracing the frame against the movement of the rear axle, the bar cuts down on sway caused by wind and uneven loads. It holds the vehicle steady so you can stay on your line through gusts, rough pavement, or shifting cargo. That means a calmer drive and less fatigue at the end of a long day.

Built to Last: 4140 Chromoly Steel and Polyurethane Bushings

This isn’t a lightweight setup. The 4140 chromoly steel construction gives it high strength and stiffness for serious roll control. Polyurethane bushings replace standard rubber ones to handle oil, gas, and ozone without breaking down. They stay firm longer, keeping the system tight and consistent over time.

Corrosion Resistance That Holds Up: Hammer-Tone and Black Powder Coat Finish

Weather and road grime can take a toll, but the silver vein hammer-tone powder coat on the bar and black powder coat on the brackets keep rust at bay. The finish looks clean and stands up to years of use without flaking or fading.

Straightforward Install: No Drilling Required, Hardware Included

There’s no need to drill into the frame. The bar bolts on with the included zinc-plated mounting hardware and bushing lubricant. It’s designed to avoid interference with most common aftermarket suspension upgrades, so you can add stability without reworking your setup.

Specs

Dimensions

  • Bar diameter: 1-1/2"

Warranty

  • Limited lifetime warranty

7180 Hellwig Rear Anti-Sway Bar - 1-1/2" Diameter

Installation Details HE78RR Installation instructions

This Product Fits The Following Vehicles






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Customer Satisfaction Score:

Ratings & Reviews

4.7

403 reviews
5 Stars
(333)
4 Stars
(39)
3 Stars
(15)
2 Stars
(5)
1 Star
(11)
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by:
Nearly 100% effective in preventing the dreaded semi-truck passing swing and sway on a 28’ Class C. Installation was easy even for a very amateur guy who hates working on machines. My compliments to e-trailer for the great videos.
First trip in this unit (IN to ND and back)was all white knuckles. The last trip (about 250 mi) was relaxing and I just grinned and waved as the trucks sped by. Well worth the $.
by:
My rig was equipped with one inch sway bars, front and back. Today was my first trip since I installed the inch and a half bar on the rear. Wind gust were up to 25mph. It made a world of difference in the effort it took to maintain my lane. Still took a little effort. I may go with the one and three eights bar on the front, along with sumo assist springs. That should eliminate all sway.
by:
2024 Thor Four Winds Motorhome
Great customer service the sway bar is a game changer in the wind
by:
Makes a noticeable improvement on handling on lean on off and on ramps, cornering, etc. when combined with the front hellwig sway bar. Should be standard equipment on C class motor homes on the E450 chassis.
Bh profile picture

Bh

11/26/2025

It was a very worthwhile investment. I dont think a red hawk should be sold on a e450 chassis without the upgraded sway control. Makes a huge difference with trucks passing, on and off ramp lean, and general handling.

by:
MUCH heavier than the "heavy duty" OEM anti-sway bar in my Jayco Redhawk. Easy to install with etrailer youtubes. The most important reason to choose this over Roadmaster is that you don't have to drill holes in the frame.
by:
2019 Ford E-Series Cutaway
The sway bar was easy to install,even for a 72 year old. I test drove the rig and can honestly say it was an improvement. The real test will be driving in the Ozarks next fall.
Mike L. profile picture
Etrailer Expert

Mike L.

1/22/2026

That's a beautiful part of the world that your planning on traveling through! I hope you have a great time!!

by:
2002 Ford Van
eTrailer does very well in getting the right part on time. Helwig is always a great product.
by:
The sales person Rachel is amazing. She walked me through the ordering process. Made sure I ordered the correct item for my vehicle.
by:
This sway bar added the stability that I was looking for on my 32’ E450 class C. It is stable in the wind and when semi Trucks pass me. Very good product.
by:
This sway bar eliminated virtually all the sway on my 2025 Winnebago Minnie Winnie 31K.
by:
The difference between the OEM and the Hellwig rear anti-sway bar is unbelievable.
by:
Made a difference when driving and making turns.
by:
Very heavy duty which is was what I wanted and I can certainly feel the difference
by:
Just installed
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by:
2022 Ford E-Series Cutaway
Great product , have a helper to hold in place , challenging to do it by yourself
by:
Almost twice the size of my original. It was an easy perfect fit. Used the stock mounting locations as original.
Ronald profile picture

Ronald

6/23/2025

The swaybar is holding up well. The hard finish still looks nee

by:
Advice from Andy at etrailer was awesome. The sway bar I ordered was delivered in two days as promised. Now I have to install it. Lol
Will definitely order from etrailer again!
by:
2000 Winnebago Minnie Winnie Motorhome
I put this on the rear of my 25 year old E450 30' RV and it rides SO much better! It was pretty simple to put on, but this bar is very heavy. Doing it myself, I had to use a couple of rachet straps to support the weight while getting the screws in. I very much recommend this upgrade!
by:
Easy to install myself.
by:
Easy to put.on just needed help holding them they were heavy laying on my back
by:
Looks nice and sturdy. Arrived before estimated delivery which was great. Everything seems to be there. Can't wait to have it installed! Will follow up!
by:
Jerry was a pleasure to work with and always retained my calls. Thank you Jerry. The Hellwig bar had made a huge difference in driving. TY.
by:
Rear Sway bar by Helwig: Great, HOWEVER the flange is too rounded on the brackets provided and you cannot get a washer to fit when tightening-also cannot get a socket on to tighten, thus you cannot get a torque wrench on. Front Sway bar by Roadmaster: Great. BUT the provided new bushing that fits in the factory bracket is too thick and needs to be trimmed to fit right. BOTH of these issues SHOULD NOT have to be tolerated by a buyer of what is supposed to be an expensive quality product!!! The staff is superb but they asked me for a PRODUCT review and both brands are not impressive on the hardware.
by:
Huge improvement perfect fit the tech videos are the best gave ma a great source of information
Brooke M. profile picture
Etrailer Expert

Brooke M.

5/19/2025

That's great Jeffery! Glad the videos could help you out a little with the install. Have you been able to travel since install to really test it out?

by:
Installed this sway bar along with a front sway bar. This bar is quite larger than the factory one and helped control side to side sway. I would recommend this sway bar cause it make driving our RV so much more enjoyable.
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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 Andy C
Installed by:
Andy C
Employee Kevin C
Test Fit:
Kevin C
Employee Ian F
Test Fit:
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Employee Thomas T
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