The Power Stop Evolution drilled and slotted rotor pair for 2004–2009 Audi S4 front applications is a direct-fit upgrade to help dissipate heat and sustain braking performance. Precision cross-drilled holes improve cooling and rounded slots evacuate gases, dust and moisture to keep the pad interface clean. Silver zinc dichromate plating protects against corrosion, and rotors are dynamically balanced and matched to OE specifications.
Power Stop 04-09 Audi S4 Front Evolution Drilled & Slotted Rotors - Pair