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

Item 30026
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Market Price $316.26 You Save 13% ($41.25)
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$275.01 (pair)

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      Product Information

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


      • Better Traction, Faster Launches, Less Wheel Hop
      • Improve Cornering Performance
      • On Car Height Adjustable
      • Exclusive Bind-Free 3 Piece Poly-Ball Bushing Design
      • Great for Street Use
      • Sold as a Set of Two
      • Fits All 1979-1998 Model Mustangs


      Improve Traction. If you're not "hooking up" off the line then a set of J&M Weight Jacker Rear Lower Control Arms are the answer to your problem. These lower control arms will eliminate wheel hop, and improve traction keeping your Mustang's rear end planted for straight-line traction and cornering performance.

      Height Adjustable. J&M Weight Jacker Rear Lower Control Arms allow the driver to adjust the rear ride height for perfect launches every time. Lower your Mustang 1" or raise it by 2" by using a NASCAR style weight jack system.

      Superior Construction. J&M's lower control arms are manufactured from high strength 2" round steel tubing, making them lighter, stronger, and more resilient to bending than the competitors rectangular or square tubed control arms.

      Ball Bushing Design. These arms feature a Patent Pending 3-piece Poly-Ball bushing design that incorporates a very hard inner polyurethane ball surrounded by two soft polyurethane outer cups. The result is great traction during straight-line acceleration and predictable grip during hard cornering.

      Application. These J&M Weight Jacker Rear Lower Control Arms are designed for street use on all 1979 to 1998 Mustangs, including the LX, V6, GT, and SVT Cobra models. Sold as a set of two control arms.

      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# 23858

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (11)

      Write a Review

      Ratings Summary

      4.5 out of 5 overall rating from 11 customers

      Installation Time: Afternoon

      • February 03, 2019

        5 1983 Other - Michael Installation Time: Afternoon

        Just what I needed

        It’s the perfect item to raise the rear end.I have aftermarket nitro tires and this is what I needed to make the car ride perfect.

        Helpful (1)
      • December 28, 2018

        5 1982 Other - Rich Installation Time: Afternoon

        Nice for the price

        These work very well I like how you can adjust with out lifting the car.

        Helpful (2)
      • July 15, 2018

        5 1991 LX - Foxbody91 Installation Time: Afternoon

        Killer stance

        These are absolutely fantastic. gave my ride the proper stance it needed and installation was easy just remember to use a lot of grease that is supplied with the kit for bushing install.

        Helpful (4)
      • December 09, 2017

        5 1996 V6 - Romer719

        J M Rear Lower Control Arms

        Had a tough time installing the bushings but all in all a great addition the long list of mods.

        Helpful (5)
      • May 28, 2017

        5 1993 LX - Nick Installation Time: Less than 1 Hour

        Great product!

        These adjustable rears work awesome and they are very easy to install, and easy to adjust the ride height. I needed these badly after installing my lowering springs and adding bigger rear tires.

        Helpful (6)
      • April 06, 2017

        5 1989 LX - ChrisC Installation Time: Less than 1 Hour

        Great buy

        The weight jackers are super easy to install look and perform amazing best traction upgrade I've done so far

        Helpful (6)
      • July 22, 2016

        1 1993 GT - 93BGT

        Don't waste your money

        Save yourself hours of headache and buy ones with the bushing already installed. It's near impossible to get the bushing flushed so it makes them difficult to fit when trying to install. So buy the pre-installed bushing weight jacker you'll be happier you did.

        Helpful (4)
      • August 22, 2014

        5 1996 Cobra - Mattbk Installation Time: Afternoon

        Definate handling improvement

        They looked great right out of the box, built very well. I had to install the bushings in them using the supplied grease, The fact that they are adjustable is great, i can fine tune my ride height for street or strip. All in all its a great product that i would recommend to anyone

        Helpful (5)
      • August 30, 2013

        5 1987 GT - Swetrid Installation Time: Afternoon

        Nice product!

        I was very happy with purchase of these lower control arms. I had a previous set of arms which needed new bushings and gave me a wandering feeling on accel/decal. Worst part about the arms are assembling the control arm bushings and balls.

        Helpful (5)
      • July 24, 2013

        4 1996 GT - Ferocious Installation Time: Afternoon

        Great improvement over stock!

        I was originally looking to get the MM adjustable lowers but the J&M ones were cheaper. I did a bit of research and went ahead and ordered these. The 3 piece bushing is great, install wasn't too bad. You're better off with a friend helping you. The welds are great, the adjustable ride height is easy to use, and the control arms provide great grip. Would definitely recommend these to anyone looking for a good, cheap improvement over stock.My car is now slammed in the rear and I didnt have to sacrifice my ride quality.

        Helpful (6)

      Questions & Answers (2 answers)

      2 Top Rated Questions

      Will installing these and adjusting one side higher to compensate the dreaded foxbody lean affect the performance of driving the car?

      • should not hurt as long as you adjust both sides. if the lean is extreme adjust low side up and high side down a little.if lean isnt to bad then do raise the low side only. good luck.

      Helpful (1) Show 1 more answer

      Use with lowering springs I already have Eibach Sportline Springs, and I don't want to cut them to lower my rear end. If I buy these control arms, will it drop my rear end another inch, even with the lowering springs?

      • The J&M Weight Jacker Rear Lower Control Arms will lower your Mustang 1" or raise it by 2" now keep in mind and remember that this kit is adjustable meaning you will be able to lower or raise it on your own. Good luck RP

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) rear lower control arms
      • (4) Three piece bushings
      • (4) Steel sleeves

      Tech Specs

      Will It Fit My Mustang

      • Cobra - 93, 94, 95, 96, 97, 98, 99, 00, 01, 03, 04
      • 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

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