The PowerStop Autospecialty front rotor for 2004–2009 Audi S4 is a direct-fit replacement manufactured to strict tolerances for DTV and runout. Cross-hatched friction surface aids pad break-in, weight and vane count match OE design, and the rotor is dynamically mill balanced for quiet, smooth braking. Sold individually for straightforward, bolt-on installation without modifications.
Power Stop 04-09 Audi S4 Front Autospecialty Brake Rotor