The PowerStop Evolution drilled & slotted rotor pair for 2010-2011 Audi S4 front applications is a direct OE-fit upgrade to improve cooling and maintain friction performance. Precision cross-drilling and rounded slots clear gases and moisture, chamfered drill holes reduce stress cracking, zinc plating helps resist corrosion, and strict tolerances plus dynamic mill balancing ensure smooth, bolt-on replacement with no special modifications.
Power Stop 10-11 Audi S4 Front Evolution Drilled & Slotted Rotors - Pair