R1 04-09 Audi S4 Rear Left Drilled Black Brake Rotor

This rear left brake rotor from R1 Concepts features a drilled surface, a design choice that helps manage heat buildup during braking. For your 2004-2009 Audi S4, this rotor is specifically made to replace the original part on the rear left side of the vehicle.

The drilled holes in the rotor's surface serve a practical purpose: they allow gases and heat generated by friction to escape more easily. This can lead to more consistent braking performance, especially during repeated stops or when driving in demanding conditions. The black finish on the rotor is primarily for corrosion resistance, helping to keep the rotor looking good and protected from rust, particularly in areas exposed to moisture.

When you're replacing a brake rotor, it's a good idea to inspect the brake pads and hardware for wear. If you're rebuilding your braking system, ensuring all components are in good condition will help you get the most out of your new rotors.