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J&M Rear Lower Control Arms (79-98 All)

Item 30021
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Market Price $208.78 You Save 13% ($27.23)
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$181.55 (pair)

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    Features & Details

    • More Traction, Faster Launches, Less Wheel Hop
    • Improve Cornering Performance
    • Exclusive Bind-Free Design
    • Hassle-Free Installation Requires No Modifications
    • Sold as a Pair
    • Fits 79-98 Mustangs
    Control your Control Arm Flex. J&M's control arms increase straight-line traction and improve cornering performance. Their exclusive design allows your lower arms to articulate during cornering but stay stiff under acceleration.

    Better than Stock. Handling characteristics like wheel hop, rear end instability, or even snap oversteer can be the result of the OEM control arm design. Get rid of it with these arms.

    Better than the Competition. These arms feature a steel inner ball surrounded by polyurethane outer cups. The result is great traction during straight-line acceleration and predictable grip during hard cornering. And unlike other arms, they don't put stress on your torque box.

    Quality. J&M's arms are made of rugged 1 1/4" threaded bungs and adjuster. Manufactured from round tubing, they're lighter, stronger, and more resilient to bending and torsion compared to rectangular or square tubing. With custom made pinion snubbers, these upper control arms are the perfect suspension upgrade.

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

    MPN# 23857

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    Hardware included:
    • (8) Cupped Polyurethane outer bushings
    • (4) Polyurethane inner balls
    • (4) Zinc-plated steel sleeves
    • Polyurethane grease
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Cobra - 93, 94, 95, 96, 97, 98, 99, 00, 01, 03, 04
    • Cobra R - 93, 95
    • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Other - 79, 80, 81, 82, 83, 84, 85, 86
    • V6 - 94, 95, 96, 97, 98

      Customer Photos (5) Submit Your Photo

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        Questions & Answers (1)

        1 Top Rated Question

        Is there a right or left to these or does it matter?

        • The J&M Rear Lower Control Arms (79-98 All) will be universal. Once control arm can go on either side.

        Helpful (0)
        Post Your Question

          Customer Reviews (14) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Handling Improvement 4.272727 4.3
          • Fit 4.909091 4.9
          • Bang For Your Buck 4.636364 4.6

          • 5/5

            Installation Time: Afternoon

            April 17, 2019

            Spherical Skeptic But....

            After reading reviews for days about rear lower control arms, I really wanted to believe that these could give the best of both bushing worlds (spherical and traditional styled poly) without the drawbacks of each. But would they perform over the course of time, in the real world, with the high demands of my right foot on the skinny pedal? Yes. Yes, they do. I've put about 2500 street miles on these in short order and they're still performing exactly as described and when initially installed. I'm buying the JandM rear poly-spherical UPPER control arms next.


            Year: 1993 Submodel: LX

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            November 16, 2018


            JandM Lower Control Arms fit great. Use the online instructions.


            Year: 1997 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            June 20, 2017

            NO MORE HOPS!!!

            These are heavy duty compared to stock LCAs. Rear feels so much more solid and traction improvement going over hills at higher speed has also improved. Biggest plus is NO MORE WHEEL HOPS! You will need some beef installing these to get it aligned with the mounting holes.


            Year: 1994 Submodel: Cobra

            Helpful (6)

          • 5/5

            September 13, 2016

            Perfect product

            Easy install, assuming proper tools, definitely feels more planted. The finish on the part is stellar as well. I appreciated the supplied grease.


            Year: 1986 Submodel: GT

            Helpful (6)

          • 4/5

            Installation Time: Afternoon

            September 08, 2014

            Well made

            After I noticed my lower control arm bushings were shot, and was unable to find stock rubber replacements, it seemed these were the next best option. I decided that the uniqueness of three piece poly ball bushing was either the result of brilliant, forward-thinking engineering, or a dumb idea no other company would bother with, and for the price and my purposes, it didn't matter which. I didn't notice a drastic difference in...anything, really. My car is just a daily-driver though, so I can't say if there are improvements in handling at the car's limits. It does feel a little more solid and planted, and I feel much better about my car's capabilities. Install was easy, though I would have appreciated some instructions from the manufacturer; install is pretty straightforward, but without instructions things could get hairy for less experienced mechanics. Make sure to jack up the diff near the driveshaft, otherwise it tilts in a way that makes the control arms appear too short. They appear to be sturdily constructed, and best of all (for me), don't add any noise or harshness to the ride.


            Year: 1998 Submodel: GT Portland, OR

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            April 15, 2014

            rear control arms

            Fit great easy install. Used these to replace another pair of cheap aftermarket arms that came on the car when I got the car. A much better arm.


            Year: 1998 Submodel: Cobra Dewitt,MI.

            Helpful (7)

          • 5/5

            Installation Time: Full Day

            December 20, 2013

            Removed wheel hop!

            Puts the powers on the ground with out the wheel hop.


            Year: 1991 Submodel: Other Illinois, USA

            Helpful (7)

          • 5/5

            Installation Time: Shop Install

            November 25, 2013

            1996 Cobra J&M Lower Control Arms

            I decided to go with J&M Lower control arms because they were recommended by a friend and also had very good ratings. I had them conveniently shipped free to work where I had my good friends install them. After the installation I took my Cobra for a test drive and it was like night and day! It has better traction, no body roll and zero tire hop. I did some hard turns and it rode like it was on rails. My car feels athletic and I can take some serious turns, what a difference! The quality and construction compared to the stock ones is like night and day! I highly recommend them!


            Year: 1996 Submodel: Cobra El Paso, TX, USA

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            October 18, 2013

            J&M 'Street Performance' Lower Control Arms 1998 Cobra

            I installed these during a suspension rebuild, and impressed with the fit, finish, clean welds and noticeable performance improvements. The key to these arms is the 3-peice 'poly-ball' bushings, as this really helps reduce the inherent 4-link bind with the 79-04 SLA, yet really firms things up with respect to deflection during launch and cornering. I plan on installing the J&M upper control arms in the near future to compliment the lowers. Great 'bang for the buck' part...highly recommend!


            Year: 1998 Submodel: Cobra California, USA

            Helpful (8)

          • 5/5

            Installation Time: Afternoon

            January 19, 2013

            nice LCA's

            The arms are very high quality. Good powdercoat, beautiful welds, and a unique bushing design.


            Year: 1988 Submodel: Other

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            September 21, 2012

            Excellent design

            These control arms are very well designed and perform extremely well for the money. I would definitely recommend these to anyone wanting to retain the articulation of a bearing, without sacrificing ride quality.


            Year: 1991 Submodel: GT Clarkson, KY, USA

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            July 27, 2012


            I installed these along with a set of j&m uppers and maximum motorsports coil overs. Vastly improved the stability of the rear end. Tire hop is gone and my car gets traction out of first with 4.10s in the rear. Good quality welfare and very simple install.


            Year: 1998 Submodel: Cobra sc

            Helpful (5)

          • 5/5

            August 10, 2011

            J&M Lowers

            Item is exactly as described, great finish and quality construction. I still have to install them.. Will post pics after install.


            Year: 1989 Submodel: GT

            Helpful (5)

          • 5/5

            March 29, 2011

            J&M Rear Lower Control Arms

            These are a plastic ball not a steel one like in the description. They work well though. The rear is nice and tight. 2 things I didnt care for were no directions and they had to be assembled.


            Year: 1998 Submodel: Cobra

            Helpful (5)

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