The Brembo Rear GT big brake kit for 2019+ 330i applications includes a four‑piston rear caliper and a two‑piece 380×28 mm cast rotor with slotted Type‑1 face in red. Identified as a rear GT BBK, the listing specifies rotor dimensions, two‑piece construction and the slotted pattern to provide the rear brake configuration detailed for the 330i model years shown.
Brembo 19+ 330i Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Slotted Type1-Red