The Brembo rear GT big brake kit for 2011–2018 Porsche Cayenne and Cayenne S/GTS rear applications features 4‑piston cast calipers and 380×28 mm two‑piece slotted Type‑1 rotors in yellow. The product description specifies rear GT hardware with cast 4‑piston calipers matched to two‑piece slotted rotors and notes the yellow finish for those Cayenne model years.
Brembo 11-18 Cayenne/S/GTS Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Slotted Type1-Yellow