The GiroDisc rear dust boot is a brake dust cover made to protect caliper seals and pads from dirt and moisture, helping to extend component life. It fits Porsche 911 Carrera S, 4S, and GTS models in the 991.1 series, matching the rear brake mounting pattern and rotor clearance to provide a direct replacement during service.
GiroDisc Porsche 911 Carrera S/4S/GTS (991.1) Rear Dust Boot