High-performance, valved exhaust system made from T304 stainless steel. Designed as a direct bolt-on for Audi B9 RS4 and RS5. Uses Valvetronic technology to control airflow and sound: when the valves are closed, the exhaust is quieter and refined; when open, it delivers an aggressive, sporty tone. Expect a 5–10% gain in horsepower when paired with a full catless setup. Compatible with the OEM electrical valve (no remote included), or you can add the FI Exhaust remote or app for control.

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