The Brembo GT rear big brake kit for 2011–2016 528i outfits the rear with cast four-piston calipers and two-piece 345×28 mm drilled rotors in silver for those years. The opening sentence states the product and supported vehicle application. The kit pairs cast 4-piston calipers with drilled 345×28 mm two-piece rotors in a silver finish; verify hub compatibility and wheel clearance prior to ordering.
Brembo 11-16 528i Rear GT BBK 4 Piston Cast 345x28 2pc Rotor Drilled-Silver