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J&M Extreme Joint Rear Lower Control Arms - Black (05-14 All)

Item 30020
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Market Price $203.44 You Save 13% ($26.54)
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$176.90 (pair)

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    Features & Details

    • Better Traction, Faster Launches, Less Wheel Hop
    • Improve Cornering Performance
    • Exclusive Bind-Free Design
    • Hassle-Free Installation Requires No Modifications
    • Sold as a Pair
    • Fits 2005-2014 V6, GT, Bullitt and GT500 Mustangs
    Control Your Control Arm Flex. Improve your Mustang's straight line acceleration and cornering grip at the same time with these Extreme Joint Mustang Lower Control Arms from J&M. With your stock lower control arms, the exceptionally soft OEM rubber bushings insure your control arms don't bind, preventing undesirable handling characteristics like snap oversteer. However, if you try to accelerate or stop quickly in your 2005 - 2012 V6, GT or GT500 Mustang and you're likely to experience wheel hop or rear end instability. Control your control arm flex with J&M's Extreme Joint Mustang Lower Control arms and go faster - everywhere.

    Better Handling. With J&M's exclusive design, you get the benefits of a rigid bushing, resulting in better straight-line grip, but the performance of a spherical bearing under cornering, so you get the best of both worlds. 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.

    Quality. Though harder to work with, J&M selected round tubing for its superior strength and resilience to bending and torsion when compared with rectangular or square tubing, while also being lighter. With an offset design to guarantee bind free geometry, these lower control arms are the perfect suspension upgrade to your 05-14 V6, 05-14 GT or 07-12 GT500 Mustang.

    Fitment: 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

    MPN# 23942B

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    Hardware included:
    • (4) Polyurethane bushings
    • (2) Short zinc-plated steel sleeves
    • Polyurethane grease
    Installation Info
    Tech Specs
    Will it fit my Mustang?

      Customer Photos (15) Submit Your Photo

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        Questions & Answers (4)

        4 Top Rated Questions

        Would this effect the traction control in adverse conditions? I'm sure this is a stupid question but my 2012 5.0 with 3.73 gears has entirely to much wheel spin but living in Alaska when I push the magic button during winter snow (traction control) the car is simply amazing. Was just wondering if this product would hurt that?

        • No. This product is designed to keep your axle planted to prevent wheel hop. The axle ultimately is more stable, slightly improving traction. Should have no negative effects on your car.

        Helpful (1) Show 2 more answers

        Relocation after lowering? Once I have these on my car when I decide to add lowering springs in the future will I need to use a relocation bracket for these?

        • Lower control arm relocation brackets are not required when lowering your Mustang.

        Helpful (0)

        lowering If I decide to lower my car would these effect my traction in a negative way since they are not adjustable?

        • It depends on how much you lower your car. You may need relocation brackets to correct the angle, otherwise the geometry is affected in such a way that lower control arms can actually "lift" the axle. This is not specific to J M Extreme Rear Lower Control - It applies to ALL rear lower control arms.

        Helpful (0) Show 2 more answers

        Alignment? I didn't think so, but now I'm not sure. Do you need an alignment after installing these?

        • Nope. Its a simple bolt on

        Helpful (0) Show 4 more answers
        Post Your Question

          Customer Reviews (70) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:0-$100

          • Handling Improvement 4.655172 4.7
          • Fit 4.827586 4.8
          • Bang For Your Buck 4.649123 4.6

          • 5/5

            Installation Time: Less than 1 Hour

            March 22, 2019

            What wheel hop lol

            A must-have product install these on my 2012 Mustang GT premium and there is a big night and day difference taking Corners a lot harder and stiffer then the car has ever been and there is no wheel hop at all since I've installed these install was pretty straightforward had to use a press to get the bushings in besides that I'm loving them thanks American Muscle and JandM


            Year: 2012 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            November 12, 2018


            They worked great. Really came in clutch when I needed them thank and very fast delivery. Thank you!!


            Year: 2011 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            May 04, 2018

            Nice product!

            It was a breeze to install. Wish the bushings had been pre-pressed but hammering them in wasn't too difficult. A press or vise would be a much better option. They tightened up the floppy rear by a large margin. I still have mistery squeeks so I have a few more components to replace yet. Upper and panhard next.


            Year: 2008 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Less than 1 Hour

            July 20, 2017

            Great part, highly recommend.

            I replaced the rear lower control arms and the 55D rear springs with the Steeda Sports and the JandM at the same time. Made a very noticeable difference. Before, there was a rubbery feeling to the rear end. Now, it seems the front end could be stiffened. A slight increase in NVH but not enough to worry about. During assembly to help with alignment of the control arms, jack up the front part of the pumpkin to rotate the rear end into proper position.


            Year: 2013 Submodel: GT

            Helpful (8)

          • 5/5

            Installation Time: Afternoon

            June 08, 2017

            No more wheel hop!

            Eliminated all wheel hop on my 2014 GT Track-pack. Have to be regressed when winter starts to roll around but its really easy! Overall, solid buy!


            Year: 2014 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            March 04, 2017

            No more wheel hop

            Great product went in with no problems took about 30 minutes on a lift. Little difficult to get torqued to 129 lbs. but not bad. I am getting a little noise from them on bumps but I didn't have a grease gun available at time of install. Hopefully grease will fix the noise


            Year: 2013 Submodel: Boss

            Helpful (5)

          • 5/5

            September 26, 2016

            Well made product that works!

            Chose the JandM Extreme control arms because of other reviews, and the spherical bushings. Came with great instructions, plenty of lube for the front bushings, and went on easy. No noise or NVH from them so far, all is quiet, and no wheel hop, which is why I did my research before buying. The quality shows right out of the box.


            Year: 2007 Submodel: GT

            Helpful (5)

          • 5/5

            July 20, 2016

            Great product and price

            Very pleased with these control arms. Build quality appears to be high quality. Poly front-end and spherical rears does not add to any added noise I can hear. Maybe a little more feeling (vibration/harshness) than before but I consider this a plus as it is now easier and faster to determine what's happening back there. Install was very easy with online instructions and I'm and artist not a mechanic. I did this with my 15-year-old son on a lift.


            Year: 2011 Submodel: GT500

            Helpful (5)

          • 3/5

            Installation Time: Afternoon

            May 16, 2016

            J M rear lower control arms

            These fit well and look well made. However, I installed them to control axle hop and after installation I still have axle hop. It's nearly as pronounced as before when accelerating from a roll. From a standing start, axle hop is reduced by about 50 or a bit more. I will try an upper control arm replacement next.


            Year: 2012 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Afternoon

            April 08, 2016

            Power to the road

            Install was pretty straight forward for a novice like myself. Did the installation using jack stands in my driveway. Tested them after install and the wheel hop was greatly reduced if not gone all together. I would recommend this product.


            Year: 2014 Submodel: GT

            Helpful (5)

          • 5/5

            February 29, 2016

            Easy install

            Great look and easy install. You just have to make sure that you have new hardware. Ford states the bolts are a one time use only so make sure you have new hardware before you start this nice little project.


            Year: 2007 Submodel: Other

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            August 07, 2015

            Much quicker launches, more control on your car, best upgrade yet!

            Everyone is a bit hesitant about replacing their LCAs because its just a piece of metal. I was on the same boat. The stock LCAs are great for a daily driver that babies his/her car. This upgrade is for those who go hard on their car and want to get the most out of it. After experiencing wheel hop, wheel spin at hard launches, and car bouncing on bumpy roads, I knew it was time to update that suspension. I ordered this LCAs and the next day they were at my house! Install took less than 30 min on a lift. First drive after the install and I was speechless. The car is planted on the road, no wheel hop, much stiffer, and a true street car. I feel much more confident driving my car in bumpy roads (even tho I don't like to) and now I'm able to do full throttle launches without spinning my tires. I highly recommend this LCAs.


            Year: 2014 Submodel: GT Cheshire, CT

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            May 14, 2015

            lower arms control

            Easy to install good product handling much better recommend this product


            Year: 2011 Submodel: GT Clarence -creek Ontario cana

            Helpful (5)

          • 5/5

            Installation Time: Afternoon

            April 01, 2015

            Wheel Hop SEE YA LATER!

            First off let me say the install could not be easier, my wife and I did it in the driveway on jack stands in about an 1hr and 1/2 with no problems at all. From the moment we left the drive way we could feel how much more planted the car was I mean it was night and day. There is a bump on our street were we live and every time you hit it the car does the normal Mustang shimmy on the rear end. Well not now when we hit it there is no drama anymore and through the turns no more annoy hopping either. The amount of confidence I have now to corner my car is amazing. BUY THESE!


            Year: 2014 Submodel: GT Madison, TN

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            December 17, 2014

            Just what the doctor ordered!!!

            These DO make your girl grip the road!! Install was a breeze. Notice I said install. Now the taking off of the light blue tubular control arms that were already on it was nothing short of a nightmare. I had to cut the nut portion of the bolt off on the passenger side arm. One would think you could tap it through. NOPE, wouldn't even budge. So another trip to the hardware store to buy a blade to cut through the bolt head side and through the control arm sleeve. Not sure what happened that the bolt was seized in the control arm. If these reviews are reviewed, I would like some incite on why that would happen. You will be more then completely satisfied with these arms!!


            Year: 2007 Submodel: GT Kansas City, MO, USA

            Helpful (4)

          • 4/5

            Installation Time: Less than 1 Hour

            October 10, 2014

            Messed up from J&M but fixed fast!

            My box included a LCA for my mustang, and one for a CAMARO!!! But after sending J&M a pic, they got the right part to me asap. Easy bolt on, helps wheel hop, must have for drag racer.


            Year: 2014 Submodel: GT East Texas

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            September 09, 2014

            Even Better Than I Expected

            Before Install: I spent a ton of time reading and comparing reviews of the different LCA models. As it relates to "wheel hop", I noticed words like "ALMOST" and "VIRTUALLY" eliminated on some of the lower priced units but it seemed like most of the reviews for this one used words like "TOTALLY" and "COMPLETELY" so guess which ones I picked? I also have to confess that, while I expected a difference when accelerating hard, I was skeptical of how much difference I would notice when driving normally. I figured much of what I read in the reviews was "placebo effect." During Install: I started installation and aborted my first attempt because I quickly found that my tools were inadequate: my only 18mm socket was a deep socket (doesn’t afford much clearance between the forward bolt and the frame) my only ratchet was short-handled (not enough leverage) and the deflection-style torque wrench I started-with was a joke for this job. A trip to Lowes later, I had a standard-depth 18mm socket and a nice Kobalt click torque wrench with ratchet action. Precisely what I needed! My second installation attempt went great. My only small snag was when I removed the driver-side LCA, the axle shifted rearward by about 1/4 inch. So I could get the bolt through the hole, I rigged a silly-looking solution to pull the axle forward using a scrap cable and a large wood clamp - silly but it worked. The passenger side didn't give me the same problem. Final installation note: 129 lbs of torque on those bolts feels like a LOT of torque - take your vitamins! After Install: I did notice a positive change right away but the roads were a little wet so hard to tell much. The real proof was on my next drive - to work on dry roads. On my drives to/from work I am usually engrossed in what I need to get done for the day but every time I accelerated (even moderately) it drew my attention back to the handling -it seriously (no really) handles like a whole different car now. The car used to feel uncertain (even just cruising) on rough road but I attributed much of that to the solid rear axle. That is no more! It feels like the rear end is cemented to the pavement now. Acceleration is certainly improved a tremendous amount but overall cornering and straight-line handling on rough road is also drastically improved. I am VERY impressed - these LCAs performed even better than I even expected them to.


            Year: 2011 Submodel: V6 Indiana, USA

            Helpful (6)

          • 4/5

            Installation Time: Less than 1 Hour

            August 04, 2014

            Highley recommend

            only reason I did not give the product 5 stars is because it did not have a grease fitting on both ends of the arm. It took about an hour or less to get the old arms off and the new ones on. you can tell a difference in the cars handling in takeoff and cornering. I haven't changed the uppers yet but plan on it soon.


            Year: 2007 Submodel: V6 Killeen, TX

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            June 07, 2014

            Excellent modification for greater control

            My stock LCAs (2007 Stage 1 Roush) had horrible bushing wear and were squeaking badly whenever weight was transferred and during normal driving. These J&M tubular LCAs corrected that and more- the car instantly felt more stable/tighter in the rear end from a hard launch. My gears are 4.10's and the car has a few HP mods + tuning as well- so control becomes paramount. This is the first mod of a comprehensive upgrade and isn't too difficult to accomplish. Here are two helpful tips that are not discussed in the installation instructions: 1) The spherical bearing (with the zerk fitting) is not pre-greased (verified through AM) and a grease interval is not discussed. Use a grease gun with some Mobil 1 synthetic grease once installed and hit the zerk on each LCA until grease comes out the side. I'd recommend re-greasing with every oil change (5k miles) or whatever interval you're comfortable with. 2) If you have the rear coil springs and struts, sway bars, etc., still installed when you do this, the rear axle will want to push toward the rear of the car once the stock LCA bolts are removed. This is a pain to pull back into line once you're ready to put the new bolts in as I learned on the driver side. So, use a ratchet-type strap, connect the hook to a body hole toward the front of the car (frame member), and wrap it around the rear axle. Ratchet the strap to pull the rear axle forward and help you line up the holes. Using helpers to push on the axle isn't the safest and is a tough job - especially if on jack stands. The ratchet strap was simple and turned alignment of the holes into a 1-man job. Tip: install the ratchet strap BEFORE removing the stock LCA bolts and put some tension on it. This effectively keeps the holes lined up upon removal. I did this on the passenger side and it went much more smoothly. Enjoy the new LCAs!


            Year: 2007 Submodel: Other Suffolk, VA, USA

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            June 01, 2014

            no nonsense LCA upgrade

            Quick tips on installation: -The flat side of the control arm faces the outside of the car with the grease fitting facing down at the road (instructions note this but wording was confusing to me) -When tightening the bolts just snug them down and then lower your car (or drive it) onto a set of ramps so you can load the suspension and torque down the bolts to spec ( 129 lbs ft ) -Don't over grease the bushing when popping it in (even tho instructions say to apply generously) because if you use too much it will be hard to slide the arm into the slot on the frame. the grease forces the bushing out if you don't constantly apply pressure. anyway, review as follows I bought a pair of these because my stock ford LCAs had developed a "creaking" noise on one side and were looking pretty worn. they are lightweight, easy to install, and feel a lot stiffer on the rear end during load. the bushings in these are a much needed improvement from the stock ones. the only part i was slightly confused about was which side they go on. the grease fitting faces the road and is at the back of the car but you'll notice one side of the arm is flush / flat all the way along the side of the arm while the other side bumps out a little at the end. the instructions explain this but i was a bit confused by the wording. either way, the flat side goes towards the outside of the car. overall, it only took me about 1-2 hours to figure them out and install them. they feel great, look good, i love them.


            Year: 2008 Submodel: Bullitt San Jose, CA, USA

            Helpful (5)

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