The Brembo GT big brake kit for 2020+ BMW X3M and X4M front applications pairs eight-piston cast calipers with 412x38 two-piece slotted rotors finished in fluorescent yellow. Supplied as a front-fit replacement, the kit replaces factory front components with larger, serviceable rotors and calipers to match the stated fitment and simplify rotor maintenance without altering mounting locations.
Brembo 20+ X3M 20+ X4M Front GT BBK 8 Piston Cast 412x38 2pc Rotor Slotted Type1 - Fluo. Yellow