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J&M Rear Lower Control Arms (99-04 All, Excluding Cobra)

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

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  • Item 30000
  • MPN# 23859

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    Features & Details

    • Improves Traction & Launches
    • Better 60 Ft Times
    • Eliminates Wheel Hop
    • Heavy Gauge Square Steel Tubing
    • Sold as a Set of Two
    • Fits 99-04 Mustangs
    Faster Launches. Improve your 60 foot times and get better, straighter, faster launches with a pair of J&M rear lower control arms. By replacing your factory control arms with a set of J&M's arms, you'll eliminate suspension flex that causes "wheel hop" when you're accelerating or braking.

    Better Handling. Your stock control arm bushings can bind when you're cornering, causing sudden changes in handling. J&M's unique 3-part bushings rotate freely to keep your Mustang's suspension planted even around hairpin turns.

    Industry Leading Design. Unlike other designs that use single piece polyurethane bushings, J&M's patented 3 part bearings offer the best for both straight-line performance and handling. The exclusive design of these lower control arms features a steel inner ball surrounded by polyurethane outer cups. The result is great traction during straight-line acceleration, and bind-free performance during spirited cornering for predictable grip.

    Made to Last. The J&M rear lower control arms are made from lightweight round tubing for maximum strength and finished with a black powdercoat for durability and good looks.

    Application. These J&M rear lower control arms are sold as a pair and are made to fit your 1999-2004 Mustang perfectly.

    Fitment: 1999 2000 2001 2002 2003 2004 Details

    CA Residents: Warning: California's Proposition 65

    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?

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    Questions & Answers (4)

    4 Top Rated Questions

    Going to remove the quad shocks for bigger rims. Would there be a performance difference if I only upgrade the lower control arms and not the upper ones?

    • Upgrading to The J&M Rear Lower Control Arms will provide adequate rigidity for removing the quad shocks, however for the best performance, both upper and lower control arms should be replaced.

    Helpful (0)

    I purchased upper and lower arms , look very good , should I consider installing grease zerks - or is the opinion of j m that a one time grease application will suffice for the many miles I will ask of this product.

    • I would recommend installing Grease zerks just in case you would ever need more grease in the bushings. The grease in them however will last a very long time.

    Helpful (0)

    Do you need to press these bushings? do you need to press these bushings using a hydraulic press?

    • No, only stock bushings with the metal shells need a press.

    Helpful (0)

    Do i reuse the factory bolts? if not what size do i buy?

    • With the installation of the J&M Rear Lower Control Arms (99-04 GT, V6, Mach 1) you will reuse the factory hardware.

    Helpful (0)
    Post Your Question

    Customer Reviews (33) Write a Review

    Overall Rating 4.7

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Handling Improvement 4.772727 4.8
    • Fit 4.909091 4.9
    • Bang For Your Buck 4.909091 4.9

    • 3/5

      July 13, 2018

      I was not given all of the bushings.

      When going to install these I was only given 7 rubber bushings. Please help.


      Year: 2000 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Full Day

      March 14, 2018

      J M

      These control arms are absolutely amazing. I shouldn’t have waited so long to replace the factory ones. Have only had them on a few days but already I can feel the difference. Would definitely buy more from JandM.


      Year: 2002 Submodel: GT

      Helpful (3)

    • 3/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      October 20, 2017

      j m control arms

      great upgrade ,feels better than stock.can't say it was the fix-all for live axle vs irs - but better than what it was. thanks amm.


      Year: 2003 Submodel: Mach 1

      Helpful (3)

    • 5/5

      Installation Time: Full Day

      June 09, 2017

      So so sooooo solid.

      You don't know how badly you need these. They plant the car. Great investment. Best suspension mod so far.


      Year: 2002 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      June 05, 2017


      I decided to do some suspension work on my 2003 mustang and I must say, I wish I did this a long time ago. Great quality and great fit!


      Year: 2003 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Full Day

      March 14, 2017

      What a difference..;)..

      This product sure helped out alot gave me back the comfort of my new edge mustang ...feels like when i first got so stiff an in control .i had bought some from ebay an damm they where horrible did not even last 3 months ;( but now my stang is back alive ;)..i would recommend them ..i did the work my self in my garage is easy if u like getting your hands dirty an have skillz..


      Year: 2003 Submodel: V6

      Helpful (4)

    • 5/5

      September 16, 2016

      Buy these

      Way better then the SR performance ones, noticed a huge improvement on my launch and the drive itself. Don't waste your money with SR performance, only lasted me 3 months


      Year: 2001 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Full Day

      November 15, 2015

      Great product!

      It's been about a week since I've installed these JandM lower control arms, so far great feeling of stability in the car. The only downside is with the poly bushings that were is an incremental amount of more noise going over the bumps, and RR crossings which was expected but deemed it would be good to mention in the review. Install was easy, (even though my help didn't show) I've done this swap before on other mustangs, but not my own. These arms are beefy, well constructed and even though they were my second choice over Maximum Motorsports, I'm really impressed with my choice.


      Year: 2000 Submodel: GT Gulfport, MS

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      November 02, 2014

      Speechless Improvements! Should come factory installed!

      Very big improvement over the stock lower control arms! The bushings in the stock arms are so soft allowing the rear end to literally move side to side. I used to be all over the place while launching (squirrely), not any more! Improved my launches big time! Even the gf noticed the car was much straighter during launches and accelerating. I was blown away by the improvement from these J&M LCA's and wish I didn't wait as long as I did to purchase these. Buy these and don't look back!


      Year: 2004 Submodel: Mach 1 Kansas City, MO, USA

      Helpful (5)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      June 24, 2013


      I had my LCAs installed by a local ma and pa shop, cost $130. I noticed the difference immediately. I took the onramp onto the 401 (freeway) kicked it down and felt tight. 0-60 felt like a kick in the butt, just strong forward movement. One of the best purchases so far!!!!!!!!!!!


      Year: 2002 Submodel: GT Port Stanley, ON Canada

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      May 29, 2013

      Big improvement over stock!

      The only problem I had was that the bolts in the rear axle were rusted in. Lots of WD-40 and a big hammer and the rest of the install went as planned. I haven't tried it out at the track yet but the rear of the car feels more stable.


      Year: 2001 Submodel: GT Hastings, NE, USA

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      December 18, 2012

      The best

      I added these and now the car just moves forward. When I got on the pedal you could always feel the wheel hop but no more. When I hit the 100 shot the car responds very well. Subframes arr next!


      Year: 2002 Submodel: GT

      Helpful (3)

    • 4/5

      Installation Time: Afternoon

      August 26, 2012

      Good buy

      These control arms are lighter than the factory control arms, reducing the unsprung weight, and really helped out the 60ft time. These control arms are really ment for drag racing and straight line applications, or as a replacement for the factory control arms. The bushings that come with these are not intended for autocross or intense lateral handling.


      Year: 2002 Submodel: GT Wilmington, NC

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      July 07, 2012

      Don't ignore your rear suspension!

      I see lots of Mustang guys wasting money on bolt ons when they're overlooking the fact that the Mustang's weak point is the rear suspension. Me and two friends installed these in a driveway over 2 days. Honestly, it would of taken an hour at most, but I had a few bolts that made the job slow down to a crawl. One had to be cut, and the other was in the frame making it hard to bang out. Once it was on though it got rid of my wheelhop 100% as well as allowing me to delete the quad shocks for saved weight. I used to have trouble making my 315s kick out in second gear, but now I can feel that the rear end is 100% more solid than it was with the stock lower control arms. It also launches way nicer. I totally recommend these LCA's as one of your first mods.


      Year: 1999 Submodel: GT Ottawa, ON

      Helpful (5)

    • 4/5

      Installation Time: Afternoon

      June 11, 2012

      Good bang for the buck

      I used these when doing an IRS swap on an 03 Cobra. I can't say it's better than stock because of that. These look pretty good, fit well and seem to work well. Bushings are not intstalled in then when you get them. Bushings are kind of a pain to get in.


      Year: 2003 Submodel: Cobra Ohio

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      May 02, 2012

      Great Product for Low Price!

      Definitely recommend these. They blow away the Jegs/Summit brands for the same pricing. Handling is greatly improved. Wheel hop is non existent now. Thanks AM for the chance to buy this great product.


      Year: 1999 Submodel: GT Cincinnati, OH, USA

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      May 01, 2012

      Great on corners

      You will definitely want to use A LOT of grease to prevent an annoying rubbing sound, I found out the hard way. Other than that, these are awesome! I don't break the tires loose as easily when taking corners. It just plants the tires and you can really feel the torque that your stock control arms could not hold.


      Year: 2003 Submodel: Mach 1 texas

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      March 13, 2012


      I was recommened these by a friend who has them on his Pro-Charged 03. I am blown away at the difference during launches. Can't beat these for the price.


      Year: 2000 Submodel: GT Michigan City, IN

      Helpful (5)

    • 4/5

      Installation Time: Afternoon

      January 15, 2012

      Best Upgrade for your Rear Suspension!

      My Mustang is 04 Convertible GT. Only Upgrades I have are the BAMA Custom Tunes and this new Lower Control Arm. The difference in grip is amazing! You keep more power to the floor without loosing it by spinning out! This is part is definitely recommended as one of your first upgrades!


      Year: 2004 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      December 08, 2011

      Great product

      This is a great product... my lower arms bushings were done in 2000 mustang, so i decided to make an improvement to my car.. Now that i have this lca, my car has more traction,and if u like to burnout or do donuts those are perfect because they eliminate the wheel hop.


      Year: 2000 Submodel: GT Sacramento Ca

      Helpful (3)

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