All STaSIS braking systems are engineered for your specific Audi model to create supreme stopping power. Piston sizing and rotor leverage are chosen to match the brake bias characteristics of the original vehicle. This provides a system compatible with the factory ABS calibration and the proper balance of front and rear brake force. Upgraded calipers and rotors provide unparalleled brake feel and heat dissipation. You will experience the most consistent and confident braking performance available.