
Specifications
- Brand
- SPC Performance
- Part #
- 15645
- UPC
- 082642156451

SPC Performance X Axis Sealed Flex Joint for Mustang Cobra
$48.19
Fits 1999-2004 Ford Mustang Cobra. Replaces worn rear knuckle cross axis ball joints with a sealed, maintenance-free flex joint.
Key Features
- Fits 1999-2001 and 2003-2004 Ford Mustang Cobra.
- Replaces worn rear knuckle cross axis ball joints on the IRS.
- Features a highly polished electroless nickel plated ball for durability.
- Corrosion and wear resistant moly impregnated nylon races ensure smooth operation.
- Sealed dust boot keeps contaminants out and retains internal grease.
- Designed to be maintenance-free after installation.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
If you're working on the independent rear suspension (IRS) on your 1999-2004 Ford Mustang Cobra, and you've found worn rear knuckle cross axis ball joints, SPC Performance has a solid replacement. These xAxis joints are built to keep contaminants out and retain their internal grease, making them maintenance-free for long life.
The ball itself has a highly polished electroless nickel plating, which helps with durability. Inside, you'll find corrosion and wear-resistant nylon races that are impregnated with Moly for smooth operation. The sealed design means you don't have to worry about greasing them after installation, and they're designed to keep dirt and moisture out.
This kit includes one xAxis joint. Keep in mind that your vehicle will need four of these joints for a complete replacement. SPC recommends using their press adapters, part numbers 29606 and 29610, for an easier installation, or their #40940 press tool if you don't have a shop press.
Specifications
- Brand
- SPC Performance
- Manufacturer Part #
- 15645
- UPC
- 082642156451
Frequently Asked Questions
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SPC Performance X Axis Sealed Flex Joint for Mustang Cobra

