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<http://schema.org/description>
"The iconic CAPRISTO Valved Exhaust System offers the best of both worlds through its capability to produce an aggressive exhaust note under acceleration, and a more subdued sound for city driving. This feature is possible using vacuum-actuated valve flaps that open and close depending on driving conditions and input from the driver. At lower engine speeds and during cruise operation the valves are"
<https://www.atariusshop.com/Mercedes-AMG-GT63-S-%E2%80%93-Valved-Exhaust-with-Mid-Pipes-CES3-p236773399>