The R1 Concepts drilled brake rotor for 2004–2010 BMW 525i (front left) is a vehicle-specific replacement finished in black and fitted with a drilled braking surface for service or upgrade use. Intended for the front-left position on compatible 525i models, it replaces worn or damaged rotors during brake maintenance and restores a matched braking face across the listed model years.
R1 04-10 BMW 525i Front Left Drilled Black Brake Rotor