The R1 Concepts drilled brake rotor for 2004–2009 Audi S4 (rear left) is a black-finished replacement rotor intended for the rear-left wheel. This drilled rotor is specified for the listed application and offers a like-for-like service replacement to restore proper rotor fitment and ensure compatibility with the vehicle’s braking hardware across the applicable S4 model years.
R1 04-09 Audi S4 Rear Left Drilled Black Brake Rotor