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Steeda Aluminum Mustang Rear Lower Control Arms - 4500 Series - 99-04

Steeda Aluminum Mustang Rear Lower Control Arms - 4500 Series - 99-04
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Rear Mustang Lower Control Arms
555-4551 - Rear Mustang Lower Control Arms - $293.95
Our Price: $293.95
Market Price: $323.35
You Save: $29.40
  Installation Info
Time to Install
About 2 Hours
Level of Difficulty
Tech Recommended
Tools Needed
Basic Tools
Install Instructions
Instructions are in PDF format. Get the free Adobe PDF Reader, here.
  Product Description
Learn the differences in Steeda brand control arms, read our blog post for more info: http://www.steedablog.com/2012/01/the-hidden-difference-in-control-arms/
Steeda's Aluminum Lower Control Arms really hook, for the lowest 60 ft. times and maximum control off corners. They are a direct bolt-on, with swaybar mounts located to clear differential stud girdles and T-Rex fuel pumps.



Don't be fooled by imitators! Steeda's Aluminum lower rear control arms are the only ones that use our exclusive three part variable rate bushings to eliminate suspension bind and control noise and vibration while planting your tires to the pavement.

Note: Does not fit 1999-2004 Cobra
  • The 4500 series is best for street cars, road racing, and occasional drag strip use.
  • The 4600 series is best for drag racers who consistently see 60 foot times of 1.65 or better, and for heavy (3500+lb) street and road race cars with more than 400 rear wheel horsepower.
  • Less NVH than arms with spherical bearings
  • 1/2 the weight of the competition’s control arms
  • Hard bushing centers control the axle for maximum traction and handling
  • Softer outer bushings edges won't squeak or bind
  • Won't damage torque boxes like other arms with solid bushings
  • High-strength extruded 6061 T-6 Alum. eliminates flex & reduces unsprung weight 32%
  • 1/3 the weight of lift bars!
  • Used by winners in NHRA, IHRA, SCCA, Fun Ford Weekend series, and the Ferrari-eating "Steeda Q" T-1 road racer.
  • Easy bolt on
  • Available with two bushing options to best suit your needs
  • Bushing can be ordered separately to change your Steeda Aluminum Control Arms from one type to another.
Product Benefits
  • Steeda's street & competition proves bushing package
  • Excellent for daily driving or performance use
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  Product Fitment
 This product fits the following vehicles
  • 2004 Mustang GT Automatic
  • 2004 Mustang GT Manual
  • 2004 Mustang Mach 1 Automatic
  • 2004 Mustang Mach 1 Manual
  • 2004 Mustang V6 Automatic
  • 2004 Mustang V6 Manual
  • 2003 Mustang GT Automatic
  • 2003 Mustang GT Manual
  • 2003 Mustang Mach 1 Automatic
  • 2003 Mustang Mach 1 Manual
  • 2003 Mustang V6 Automatic
  • 2003 Mustang V6 Manual
  • 2002 Mustang Bullitt Manual
  • 2002 Mustang GT Automatic
  • 2002 Mustang GT Manual
  • 2002 Mustang V6 Automatic
  • 2002 Mustang V6 Manual
  • 2001 Mustang GT Automatic
  • 2001 Mustang GT Manual
  • 2001 Mustang V6 Automatic
  • 2001 Mustang V6 Manual
  • 2000 Mustang GT Automatic
  • 2000 Mustang GT Manual
  • 2000 Mustang V6 Automatic
  • 2000 Mustang V6 Manual
  • 1999 Mustang GT Automatic
  • 1999 Mustang GT Manual
  • 1999 Mustang V6 Automatic
  • 1999 Mustang V6 Manual
  Product Reviews
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Reviewed by snnotch
08/27/2013 - 07:48:43 PM
High Quality

Love these lower control arms. They're very well built and incredibly light. Definitely recommend.
Reviewed by MachRMan
07/31/2011 - 01:00:53 PM
04 Mach 1 Install

I love these control arms....very stiff and predicatable ride quality on my 04 Mach 1. Installed along with the Aluminum UCS'a. No more side-to-side axle movement that we all know about. these control arms were complimented with steeda sway bars to make a great road race car.
Reviewed by 98S351
04/25/2012 - 10:45:01 PM
Saleen Upgrade

These lower control arms felt like they were half the weight of the heavy stock lower control arms. My Mustang barely has any mileage and the rubber pieces were already gone and I drive my car easy. I upgraded to the Steeda lower control arms and went a step up in their options for urethan bushings which were black. The typical urethan bushings are red but go firmer and they are black go even more firmer and they are yellow and then a step after that is the deryln...