The Brembo big brake kit for 2009–2015 CTS-V outfits the front with GT calipers in a 6-piston cast configuration and 405 x 34 mm two-piece slotted rotors in Type1 black. The product listing specifies front application, piston count, rotor diameter and slotted face type so buyers can verify fitment for CTS-V front braking systems.
Brembo 09-15 CTS-V Front GT BBK 6 Piston Cast 405x34 2pc Rotor Slotted Type-1-Black