Mercedes-AMG C63 Sedan W205 - Evolution Line
If the Akrapovič Evolution Line system replaces the Mercedes-AMG performance exhaust system, the Valve Actuator Kit (P-HF950) is not needed. The valves on the exhaust can be controlled from the car cabin. The Akrapovič Sound Kit (P-HF949) can be purchased as an optional part.
If the car is not equipped with a performance exhaust but with the basic Mercedes-AMG exhaust system, then the Valve Actuator Kit (P-HF950) is mandatory. The Akrapovič Sound Kit (P-HF949) is also highly recommended for complete control over exhaust sound regulation.
If the car is already equipped with exhaust valve button inside the cabin, sound kit is not needed.