The Brembo GTS front big brake kit for 2018+ Audi S4 and 2018+ S5 couples six-piston calipers with cast two-piece 380x34 mm rotors for an upgraded front braking system. This variant specifies slotted Type 3 two-piece rotors in a black HA finish and is listed as a direct-fit front kit for those S4/S5 models. The kit includes matched rotors and six-piston calipers for the front axle.
Brembo 18+ S4/18+ S5 Front GTS BBK 6 Piston Cast 380x34 2pc Rotor Slotted Type3-Black HA