The Brembo rear GT big brake kit for 2007–2013 BMW X5 is a rear axle upgrade with four-piston cast calipers and 380×28 mm two-piece rotors. This version uses slotted Type 1 rotors in yellow and supplies the rotor and caliper assemblies sized for the rear axle, matching the X5 application called out in the source description.
Brembo 07-13 X5 Rear GT BBK 4 Piston Cast 380x28 2pc Rotor Slotted Type1-Yellow