Chassis bracing maintains alignment angles and spring rates by greatly reducing body or chassis flex. In fact, it helps every component in the suspension system do its job properly. Race cars have elaborate roll cages not just to protect the occupant, a good proportion of its job is to stiffen the chassis. Critical for serious performance and essential for any car with up rated springs, shocks or swaybars. This piece installs underneath the car near the front of the vehicle.