The ICON Ford Super Duty Track Bar Ball Joint Kit ensures a rigid joint for improved handling and elimination of wobble and their greaseable design provides a long service life. Installs into either OE axles or ICON track bars.Metal on metal internalsHeat-treated componentsGreaseable design ensures long service lifeSealed dust boot prevents contaminationImproved strength and rigidity over OEM ball jointDirect press in replacement for OE axle or ICON track barsIncludes grease fitting and retaining ring for easy installation