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The Brembo rear big brake kit for 2009–2015 CTS-V applications pairs a four-piston billet caliper with a 380x28 two-piece slotted Type-3 nickel-plated rotor. Supplied as a GTR BBK rear set, it serves as a direct-fit upgrade into the rear hubs and uses a Type-3 slotted rotor and two-piece design to support cooler, more consistent braking under repeated use without altering mounting points.
Brembo 09-15 CTS-V Rear GTR BBK 4 Piston Billet380x28 2pc Rotor Slotted Type-3- Nickel Plated
