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Steeda X2 Mustang Balljoints - 94-04

Steeda X2 Mustang Balljoints - 94-04
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Mustang Ball Joints
555-8101 - Mustang Ball Joints - Set of 2 - $136.45
Our Price: $136.45
Market Price: $150.10
You Save: $13.65
  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
Read more about what makes Steeda balljoints the best available at our online blog:
Any time you alter the height of your ride, as you do when you install lowering springs (like our Steeda Sport Springs), you upset the suspension geometry. Your roll center geometry as well as your bump steer geometry is affected. You can easily bring your front roll center geometry with a set of our X2 ball joints.

Steeda's X2 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.

Why is this important? 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 X2 balljoint was designed to eliminate these problems by correcting the front roll center geometry. The X2 balljoint has a longer shaft, to raise the spindle relative to the balljoint pivot point. Spacers for the springs are included in the X2 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 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 and provide better front end grip.


Steeda ball joints are made in the USA to our 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" balljoints. They meet Ford's standards for friction, wear, and durability.

Important Details

Because the balljoint changes the relationship between the lower control arm and the tie-rod, bump-steer should be checked whenever the X2 balljoint is installed. Particularly if caster/camber plates are being used. With stock caster settings, offset rack bushings can sometimes be enough to keep bump-steer within acceptable range. However, when caster is increased, the rear inclination of the spindle further raises the steering arm where the tie-rod attaches. Therefore, an adjustable tie rod end, commonly called a bump-steer kit, is highly recommended to prevent bump-steer whether or not caster camber plates are used in combination with the X2 balljoint.

Product Benefits
  • Restores front end roll center geometry
  • Improved front end grip and steering response
  • Reduced understeer at cornering limit
  • High quality construction
  Product Fitment
 This product fits the following vehicles
  • 2004 Mustang Cobra Manual
  • 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 Cobra 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 Cobra Manual
  • 2001 Mustang GT Automatic
  • 2001 Mustang GT Manual
  • 2001 Mustang V6 Automatic
  • 2001 Mustang V6 Manual
  • 2000 Mustang Cobra R Manual
  • 2000 Mustang GT Automatic
  • 2000 Mustang GT Manual
  • 2000 Mustang V6 Automatic
  • 2000 Mustang V6 Manual
  • 1999 Mustang Cobra Manual
  • 1999 Mustang GT Automatic
  • 1999 Mustang GT Manual
  • 1999 Mustang V6 Automatic
  • 1999 Mustang V6 Manual
  • 1998 Mustang Cobra Manual
  • 1998 Mustang GT Automatic
  • 1998 Mustang GT Manual
  • 1998 Mustang V6 Automatic
  • 1998 Mustang V6 Manual
  • 1997 Mustang Cobra Manual
  • 1997 Mustang GT Automatic
  • 1997 Mustang GT Manual
  • 1997 Mustang V6 Automatic
  • 1997 Mustang V6 Manual
  • 1996 Mustang Cobra Manual
  • 1996 Mustang GT Automatic
  • 1996 Mustang GT Manual
  • 1996 Mustang V6 Automatic
  • 1996 Mustang V6 Manual
  • 1995 Mustang Cobra Manual
  • 1995 Mustang GT Automatic
  • 1995 Mustang GT Manual
  • 1995 Mustang V6 Automatic
  • 1995 Mustang V6 Manual
  • 1994 Mustang Cobra Manual
  • 1994 Mustang GT Automatic
  • 1994 Mustang GT Manual
  • 1994 Mustang V6 Automatic
  • 1994 Mustang V6 Manual
  Product Reviews
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Reviewed by robb15033
10/08/2013 - 02:59:56 PM
X2 Balljoints/Lowering Springs

X2 balljoints are a must when lowering Mustang 2" or more. The X2 balljoints are extremely strong, assist in providing excellent steering and overall handling. A+++ Product.
Reviewed by Blacklxnotch
10/04/2011 - 01:03:44 PM
Improved my handling!

I did these on my 96 Cobra along with the highly recommended bump steer kit. Definitely noticed a slight improvement in body roll, meaning less of it, but what I really noticed was the improved cornering grip. My car had a noticeably higher amount of front end grip after I did these.

Although they make a nice upgrade just to replace worn ball joints (and your tie rods with the bump steer kit) The performance increase alone is well worth it. I would definitely get these again if I owned another 94-04 vehicle.
Reviewed by dlspeed
07/17/2011 - 11:44:29 PM
Excellent Product at an Amazing Price

We picked these up after lowering our 2001 Mustang by 1.75". Our geometry was so out of whack, plus having 90,xxx miles on the car had our balljoints destroyed. These went on in a snap, came with extremely detailed instructions, and installed in about 2 hours with simple hand tools and the use of a balljoint press (rented from parts store).

Would definitely recommend these to anyone lowering their car, especially if you are going greater than 1.5"
Reviewed by ericmcn
07/17/2011 - 03:00:26 PM
Installed on 2001 Mustang!

A must have when lowering any car! The quality of this ball joint is great and has the port at the bottom for adding the grease for ease if needing a refill, just all and all a great ball joint for lowered cars, good job Steeda!
Reviewed by 98S351
04/25/2012 - 10:21:42 PM
1998 Saleen Mustang

Even if you think you don't need these x-2 ball joints the difference will speak for itself in performance handling combined with the bump steer kit and Aluminum Steering Rack Bushings. Pulling out the stock ball joints you'll immediately see the wear and tear on the rubber. In combination with all the parts I mentioned above I noticed a sharper and firmer steering response, and just overall drivability was great! Strongly recommended part even if you don't think you need it :-)