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J&M Weight Jacker Rear Lower Control Arms (99-04 GT, V6, Mach 1)

6 Reviews
Our Price

$275.99

(pair)
  • Item #30027
  • MPN# 23860

  • Market Price $305.99
  • You Save 10% ($30.00)
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Customer Photos
Features
  • 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 1999-2004 Mustangs, excludes IRS equipped Cobra
Description
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 1999 to 2004 Mustangs, including the V6, GT, Bullitt, and Mach 1 models. Does not fit 1999-2004 SVT Cobra's with Independent Rear Suspension (IRS). Sold as a set of two control arms.

Fitment: 1999 2000 2001 2002 2003 2004 Details

Won't fit? Add an exception

What's in the Box
  • (2) Rear Lower Control Arms
  • (4) Three piece poly-ball bushings
  • (4) Steel sleeves
Installation Info
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • V6 - 99, 00, 01, 02, 03, 04
  • GT - 99, 00, 01, 02, 03, 04

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

Most Helpful Reviews

5/5
good arms

the arms are good construction. the only thing that sucked was puting the new bushings in. you almost need two people do put them in. one to hold the bushing and the other to push it in. other then that ...

Read More
Helpful (1)

5/5
Awesome! !!!

This product is awesome, it's true what it says it keeps tires planted to the ground without having too much wheel spin when your taking off, it feels a little stiff but overall a sweet product. I would ...

Read More
Helpful (1)

Read All 6 Reviews
Overall Rating 5 out of 5 stars

Customer Photos (3) View All Photos

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1 Questions / 2 Answers

Ask a Question

upper and lower? must you get the J&M Rear upper Control Arms to install the lower? or will the lowers work with the factory uppers?

04Mach1MN Year: 2004 Model: Mach 1

  • The J&M rear lower control arms work fine with factory uppers. I am running the configuration on my 03 GT vert.

    Best Answer

    Loock Year: 2003 Model: GT

    Good Answer (2)

Show 1 more answer Question Resolved

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Customer Reviews (6) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Afternoon

  • Handling Improvement 4.5 4.5
  • Fit 4.666667 4.7
  • Bang For Your Buck 4.5 4.5



  • 5/5

    Installation Time: Less than 1 Hour

    December 19, 2014

    Great control arms

    These are the best control arms on the market in my opinion. It lowers your rearend's instant center and you can adjust ride height in 5 minutes. I recommend these control arms to any street strip enthusiast.

    Rjmustang

    Year: 2003 Model: Cobra Driving Style: Street / Strip 'Stangs I have owned: 3 Niagara Falls, NY

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    December 20, 2013

    Awesome! !!!

    This product is awesome, it's true what it says it keeps tires planted to the ground without having too much wheel spin when your taking off, it feels a little stiff but overall a sweet product. I would recommend this to anyone who wants to upgrade there rear end. Thanks A.M.

    KnightRider45

    Year: 2001 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 1 Austin, TX, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    July 21, 2012

    good arms

    the arms are good construction. the only thing that sucked was puting the new bushings in. you almost need two people do put them in. one to hold the bushing and the other to push it in. other then that they are great.

    thebestdj07

    Year: 1999 Model: Cobra Driving Style: Street / Strip 'Stangs I have owned: 4 Ohio, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    May 29, 2015

    Great product!

    I bought these to get the extra 1" of lowering to get the car sitting level. They worked great. They seemed to be built well although at full drop the adjustment screw comes really close the the stock sway bar. It might interfere with a larger diameter sway bar. I am very pleased with my purchase.

    Gt2door

    Year: 1999 Model: GT 'Stangs I have owned: 1 Muskegon MI

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    October 20, 2013

    easy tire clearance

    I bought these to allow clearance for my drag radials. They work great. Easy installation and easy adjustment. I highly recommend these.

    CrossMach

    Year: 2004 Model: Mach 1 Driving Style: Daily Driver 'Stangs I have owned: 10+ Fort Worth, TX, USA

    Helpful (0) (0)

  • 5/5

    Installation Time: Afternoon

    May 17, 2013

    J&M Weight jacked rear lower control arms

    This is a great product ! Installation is time consuming, but can be done in your garage. In the end it is worth the work. It make the rear off your mustang completely adjustable. And what a blast... The biggest tip I have for anyone installing these on a GT is drop all the exhaust hangers because you can not get the control arm bolts out past the mufflers with out doing this step and it is not mentioned in the directions. Once again great product and an awesome add on !!

    Loock

    Year: 2003 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 CT

    Helpful (0) (0)

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