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ST Suspension Rear Anti-Sway Bar (79-04 All, Excluding 99-04 Cobra)

Item 384819
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Improves Driving Performance
      • Reduce Body Roll
      • Increase Traction
      • Solid Rear 24mm Sway Bar
      • Compatible with Coupe and Convertible
      • Fits 1979 to 2004 GT and V6 Mustangs


      Improves Handling. Gain complete control of your Mustang with an ST Suspensions Rear Anti-Sway Bar. It's geared toward reducing unwanted body roll while offering increased gripping power for your GT or V6 Pony. Installing this Rear Sway Bar will provide superior handling, flatter cornering and better stability when you're owning the back roads in your home town or racing a competitor at the track.

      Superior Quality and Materials. ST Suspensions manufactures this solid 24mm Rear Anti-Sway Bar from cold-formed, high-strength solid steel for precision performance. It's then completed in a black powder coat finish for great looks and durability. Easily beef up your rear suspension with this rear sway bar kit, complete with high quality polyurethane bushings and all the necessary hardware.

      Application. The ST Suspensions Rear Anti-Sway Bar is designed for use on 1979 to 2004 coupe and convertible Mustangs, including the GT and V6 models.

      Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

      MPN# 51040

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (12)

      Write a Review

      Ratings Summary

      4.3 out of 5 overall rating from 12 customers

      Installation Time: Less than 1 Hour

      • February 06, 2019

        1 1995 GT - ChristopherD Installation Time: Less than 1 Hour

        Hits every speed bump

        Put this on my car did handle much better but couldn't drive up my driveway and hit every speed bump almost got stuck in a parking lot car has 315/35/17 in rear would probably be ok with a taller wheel and tire package...but for me only on car a few days... would return it but speed bump damaged it ordered Eibach unit much happier with it

        Helpful (0)
      • August 22, 2018

        2 1991 LX - Joe Installation Time: Less than 1 Hour

        okish product

        Slight improvement over factory handling. Good build quality. Fitment on the car is horrible. The square brackets make the swaybar hang around 2.5" above the ground. It drags on everything including going in and out of most driveways.

        Helpful (2)
      • April 02, 2018

        4 1999 V6 - LeonR Installation Time: Less than 1 Hour

        My build

        Car never came with one so naturally it was a huge improvement

        Helpful (5)
      • December 15, 2017

        5 2002 GT - Ricco Installation Time: Less than 1 Hour

        Had my doubts

        My old ones broke and were worried it would break due to the brand. My old ones were Eibach and lasted until I messed up. Well these ST are still hanging in there and handles pretty good. Best bang for your buck!

        Helpful (5)
      • September 01, 2017

        5 2003 GT - yellow03GT Installation Time: Less than 1 Hour

        good stuff

        didnt really need to change my rear sway bar but got his just for the fun of it :) and im loving it... I already have steeda srpings, a panhard bar, new control arms and a few other handling mods, something ive been upgrading little by little in the last 3 years. This sway bar is the icing on the cake, my Mustang's rear was stiff and now is even STIFFER :)

        Helpful (5)
      • August 16, 2017

        5 1996 GT - OmarC Installation Time: Less than 1 Hour

        My st suspension rear sway bar

        I really liked the car is more stable, is really easy to install I recommend.

        Helpful (5)
      • July 20, 2017

        5 1995 GT - DavidF Installation Time: Less than 1 Hour

        Easy to Install

        This product was very easy to install and I really like the way it bolted to the car. This baby ain't going to break.

        Helpful (5)
      • October 11, 2016

        5 1995 GT - 95build

        '95 GT ST anti-roll install

        I've never had a bar on the back, but when I pulled the quad shocks off to make room for the 315-35-17 (10.5 10th. Ann. Cobra wheels) the body had some serious roll issues... Luckily, I had already ordered the ST anti-roll bar. I put the back of the car on the ramps and slapped 'er on in about 15 minutes. The difference it made was like day and night. The car feels solid and the roll is gone! It's a good product and I would recommend it to anyone.

        Helpful (5)
      • August 30, 2016

        5 1982 GT - yellowpony

        traction problem is corrected

        had a problem witj wheel hop a this heavy duty sway bar went right in no problem and no wheel hop

        Helpful (5)
      • June 03, 2016

        5 1999 V6 - deanebs Installation Time: Less than 1 Hour

        Nice to have on a v6

        V6's didn't have one from factory. Stiffens up the rear a good amount. Doesn't come with hardware for us "sixers" so you'll have to go out and purchase your own. Make sure to use grade 8 bolts.

        Helpful (8)

      Questions & Answers (7 answers)

      5 Top Rated Questions

      what size bolt hold the sway bar on ?

      • While installing the ST Suspension Rear Anti-Sway Bar, you would re-use the factory bolts for proper installation.

      Helpful (2)

      i have stock control arms, will this still fit?

      • The ST Suspension Rear Anti-Sway Bar will replace your factory sway bar and mount to the factory lower control arm and most aftermarket control arms.

      Helpful (0)

      What hardware do I need to purchase exactly for an 01 V6 Mustang? I mean bolt grade, size, clips, etc. Also, what torque should I tighten the bolts to?

      • The rear sway bar torque spec is 33 Ft-Lbs. I would recommend replacing the hardware with brand new OEM hardware from the dealership.

      Helpful (0)

      I have the AM staggered wheel and tire set up. I imagine this exacerbates the under steer the car has stock. Any idea if this bar is stiff enough to get a slight over steer or produce neutral handling if I keep the stock bar on the front?

      • The ST Suspension Rear Anti-Sway Bar will help to reduce under steer, but will not produce over steer. We recommend using a matching front sway bar to achieve the most neutral handling possible.

      Helpful (0)

      i have sr performance lower control arms on my 2001 gt, will this item still fit ?

      • Hi, This anti sway bar will work with the SR lower control arms.

      Helpful (0)
      Post Your Question
      2 More Questions
      Does this item (rear only sway bar) include any and all addition hardware to mount it? thank you, Martin C Meyer 1 answer
      will this work on the Steeda or BBK Gripp square type lower control arms or will these only adapt to stock style lower control arms? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Rear Sway Bar

      Tech Specs

      Will It Fit My Mustang

      • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
      • LX - 87, 88, 89, 90, 91, 92, 93
      • Other - 79, 80, 81, 82, 83, 84, 85, 86
      • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04

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