White line Roll Cente kits are designed to correct roll-center geometry using specially engineered ball-joints. The {insert part #} kit has 3 adjustment settings to provide precision geometry tuning to the varying heights of lowered Mustangs. Raising the front roll-center results in a substantial increase to front roll resistance and a significant reduction in suspension compression of the outside front wheel during cornering. The result is more even weight distribution and improved tyre contact ultimately improving front end grip and cornering speeds.