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SR Performance Polyurethane Spring Isolators - Rear (79-04 All, Excluding 99-04 Cobra)

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  • Item 56055

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Ship to: Ashburn - 20149
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    Features, Video & Details

    • Made of Graphite Impregnated Urethane for Long Life
    • Improves Handling and Steering Response
    • Fits: 1979-2004 Mustangs

    Review & Installation Video

    Review & Install Video

    Performance Upgrade. If you are installing a new set of lowering springs it is a good time to replace your old worn out rubber Spring Isolators with a new set of SR Performance Polyurethane Spring Isolators available from AmericanMuscle.

    Superior Materials. These SR Performance Polyurethane Spring Isolators are made from polyurethane that has been impregnated with graphite so they will not dry out and crack like the stock rubber pieces.

    Application. Designed to replace the stock Rear rubber units found on the 1979-2004 Mustangs these SR Performance Spring Isolators will greatly improve the handling of your lowered pony. Not for use on SVT Cobra's with Independent Rear Suspension (IRS).

    SR Performance

    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# 56055

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    Hardware included:
    • None required
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Bullitt - 01
    • Cobra - 93, 94, 95, 96, 97, 98
    • Cobra R - 95
    • 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
    • Mach 1 - 03, 04
    • Other - 79, 80, 81, 82, 83, 84, 85, 86
    • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04

    Does not fit 1999-2004 SVT Cobra's with Independent Rear Suspension (IRS)

      Customer Photos (13) Submit Your Photo

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        Questions & Answers (9)

        5 Top Rated Questions

        I put lowering springs all around. Now when I hit a bump it jars me out of the seat. Will these fix that?

        • They may help settle the springs on the seats but, shocks are responsible for the ride quality I would recommend changing the shocks.

        Helpful (1)

        will these affect my ride height at all if i change out the stock isos to these? i havent lowered the car but getting new shock absorbers

        • No, it won't effect ride height . Change them out.

        Helpful (1)

        My cobra is lowered, currently sitting on 17's however I'm getting ready to bolt on some 18's with a 295/40 tire out back. At the moment I'm not running any iso's and the fitment is a touch tighter than I'd prefer... Will I regain any extra clearance by reinstalling these iso's in the rear? I mean I know it won't be much, but I really don't need all that much anyway.

        do these work on the stock springs?

        • The SR Performance Polyurethane Spring Isolators can be used with stock and aftermarket springs.

        Helpful (0)

        Are these spring isolators universal? Im purchasing godspeed Traction-S Sport Springs and am not sure whatsoever if it matters what size or diameter the isolators are. Thanks

        • These isolators will work with any 79-04 Mustang, with the exception of 99-04 Cobras. This will also work with different springs.

        Helpful (0)
        Post Your Question
        4 More Questions
        Will this lower the car at all? 1 answer
        Hi, Will these isolators squeak like polyurethane bushing would? I don't want to have to install things 2 times to re-grease them down the road. Do you require or suggest special grease to avoid that, or they will stay quiet for the life of the part like rubber would. Thanks. 1 answer
        When installing lowering springs, I reused the old isolators. Eventually, I began hearing a loud clunking noise whenever I hit a bump. If I replace my isolators, will the noise go away? 1 answer
        What's the inside and outside diameter for these. I want to use to fit for an adjustable coil over set. 1 answer

          Customer Reviews (100+) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Handling Improvement 4.604939 4.6
          • Ride Quality 4.765432 4.8
          • Appearance 4.708075 4.7
          • Bang For Your Buck 4.808642 4.8



          • 5/5

            Installation Time: Less than 1 Hour

            August 14, 2019

            Perfect fit

            I purchased a set of adjustable springs for my 1988 mustang GT and the spring bushings were in bad shape. I ordered a set of these for the rear and it was a perfect fit. Snug and tight.

            Will

            Year: 1988 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            July 30, 2019

            Nice Fit

            Fit was like new, made a difference in the ride.!!

            Brandt

            Year: 1997 Submodel: V6

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            July 15, 2019

            Excellent quality

            These isolater to me are of good quality and seem to made of durable material. I also bought the front set from American Muscle!!! Even though my wife works at Mustangs Unlimited. Sorry hun....

            WilliamP

            Year: 1991 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            July 11, 2019

            Nice

            Fast shipping great product fixed the squeaking noise in the rear and leveled out the springs

            Insulator

            Year: 2003 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            June 11, 2019

            Great fitment

            The previous owner deleted the factory ones to lower the car a little more. Bought these to clear for my drag pack.

            Jeno

            Year: 1994 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 27, 2019

            Isolators Provide Excelllent Protection

            I had an issue with spring on metal and it was causing a horrible noise as well as metal on metal contact. Isolators took care of that.

            MacDaddy01

            Year: 1995 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 24, 2019

            fast shipping

            Fit perfect and very easy install made it smooth and ride better

            Gregs89

            Year: 1989 Submodel: LX

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            May 10, 2019

            Great Fitment

            This product had great fitment. OEM fitment. Just fit right in. A great mod to replace those Old, rubber, cracking, crusty, stock ones that are in. Especially if your car has over 367,000 miles.

            shavneil

            Year: 2000 Submodel: GT

            Helpful (0)

          • 4/5

            Installation Time: Afternoon

            April 25, 2019

            Time will tell.

            Replaced old worn set of rear springs and isolators. Easy install, time will show the quality.

            Our2stangs

            Year: 1998 Submodel: V6

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            April 23, 2019

            Spring isolators

            Easy to install on 2002 mustang. Used with SR lowering springs.

            2002trev

            Year: 2002 Submodel: V6

            Helpful (0)

          • 4/5

            Installation Time: Afternoon

            April 21, 2019

            Installation

            Product seemed very well constructed; price reasonable; assume it will do a good job, looks like it should. Better than the old junk that fell out. Upper isoloators need to have better fit during installation so they don't fall out.

            TerryB

            Year: 1993 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            April 16, 2019

            Great product

            Ford should have used these originally Top notch product and a perfect fit. Thanks American muscle.

            StephenT

            Year: 1993 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            April 06, 2019

            Shock bushings

            Good material better than stock replacement. They went good with my lowering springs my old ones were wore out.

            Levy

            Year: 2002 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            March 18, 2019

            Nice

            Good quality ,Went from 0 to 100 real quick. Use electrical tape to Fasten spring isolator to spring for easier installation

            Reckless

            Year: 2002 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Shop Install

            March 08, 2019

            Works great

            Works great with the new lowering springs I got. Still have vary good ride quality and I recommend to get this with new springs.

            Chris

            Year: 2002 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            February 26, 2019

            Rear spring isolators

            Product is good quality and seems to have taken the harshness out of the rear when hitting bumps.

            MichaelC

            Year: 1990 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            February 21, 2019

            Black 99 Gt

            Perfect fit a lot nicer than the factory ones easy to install springs was already out thanks A/M

            MikeT

            Year: 1999 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            February 10, 2019

            Mustang aroo

            Needed this part for my stang got it quick and they fit perfect thanks a lot for your fast service Customer for life Daniel

            DanielC

            Year: 1998 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            January 26, 2019

            Improved handling

            Great part good price and received them very quickly!

            StephenW

            Year: 1995 Submodel: Cobra

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            January 24, 2019

            Great quality

            A huge improvement over the factory rubber bushings!

            EricB

            Year: 1997 Submodel: GT

            Helpful (2)

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