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2005-10 Mustang Steeda X5 Ball Joints by Steeda

2005-10 Mustang Steeda X5 Ball Joints

Improve the handling on your 05-10 Mustang with a set of Steeda X5 Ball Joints for better suspension geometry.

Item #ST-5558108
MPN# 5558108

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  • Ford Mustang - 2005, 2006, 2007, 2008, 2009, 2010
  • Steeda's Bump-Steer Kit is highly recommended to prevent bump-steer whenever caster-camber plates are used in combination with the X5 balljoint.
Made in the USA


  • Corrects Steering Geometry of Lowered Mustangs
  • Lower Center of Gravity
  • Restores Roll Center Geometry


  • Made in the USA
  • Extensively Tested

 What's in the Box

  • (2) Steeda X2 Ball Joints w/ Dust Shield
  • (2) Aluminum Spacer Rings
  • (2) Locking Nuts
  • (2) Grease Fittings
  • (1) Installation Instructions

Steeda X5 Ball Joints

Any time you alter the height of your ride, as you do when you install lowering springs, you upset the steering geometry. You can easily bring your front end back into spec with a set of Steeda X5 ball joints. Restore roll center geometry and lower your car's center of gravity. Steeda's X5 Balljoint improves suspension geometry on lowered Mustangs by raising the spindle relative to the balljoint pivot-point. This raises the roll-center back into the correct range for optimum handling, resulting in reduced body roll, quicker steering response, and improved overall front tire grip. Steeda's special balljoint reduces the need for oversize front swaybars and allows the use of lower front spring rates, creating more grip over uneven pavement and better ride quality.


The ball joints are made in the USA to Steeda's specifications by a respected name-brand supplier to Ford, GM and Daimler Chrysler. Except for their custom length, they are the same materials and construction that has been extensively tested in Panther applications, that is, police cars and other severe duty applications, where they have demonstrated durability that exceeds current production "regular" ball joints. They meet Ford's standards for friction, wear, and durability.

Technical Analysis

When a Mustang is lowered, the front roll center changes due to the new position of the suspension pivot points. Lower the car too much and the front roll center drops to well below ground level, and worse than that,the roll-center moves side to side as the body rolls, resulting in lost grip and erratic handling. The lower roll center causes the body to roll more easily. Countering this tendency usually requires a significant increase in front spring rate to simply control the added roll due to the lowered the roll-center. This higher spring rate not only hurts ride quality, but it also reduces grip on rough surfaces, as the stiffer springs cause the tire to skip over bumps instead of following the contours of the road. The X5 ball joint was designed to eliminate these problems by correcting the front roll-center geometry. The X5 balljoint has a longer shaft, to raise the spindle relative to the balljoint pivot point. Spacers for the springs are included in the X5 kit to maintain the same ride height as a stock balljoint, but with a much improved roll center height. With the roll center restored to the proper height, smaller front swaybars and softer springs can be used. The result is a suspension that works for you to accommodate the small and large imperfections that are in any road or track, allowing the tires to stay planted on the ground where they belong.


  • Fits 2005-2009 Mustang
  • Fits 2010 Mustang Built on or before 08/03/09

Steeda Warranty - Click Here

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About This Brand

Steeda - Everything Mustang
Latemodel Restoration Supply is proud to offer Steeda products for your Mustang. Steeda Autosports is the #1 aftermarket company in Ford performance with performance Mustang, Focus & Fusion parts. With over 25 years under their belt, they are still one of the #1 aftermarket Mustang parts manufacturer in the industry. Their extensive research and development has produced top notch, high quality parts that get your Mustang performing, handling, and looking better. Shop to get Steeda clutch cables, sport lowering springs, Tri-ax shifters, x2 ball joints, control arms, cold air intakes, sway bars, bumpsteer kits, coilovers, and a variety of other performance parts.
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