The PowerStop Evolution drilled and slotted rear rotor pair for 2009–2019 Audi A4 is a direct-fit bolt-on replacement engineered for improved cooling and cleaner pad contact. Cross-drilled holes increase airflow for cooling while rounded slots clear gasses, dust and water to preserve the friction patch. Zinc dichromate plating helps prevent rust, and strict manufacturing tolerances with dynamic balancing promote smooth, quiet braking.
Power Stop 09-19 Audi A4 Rear Evolution Drilled & Slotted Rotors - Pair