Audi S4/S5 B9 3.0T Valved Cat-Back Exhaust System

Intended vehicle: Audi S4/S5, B9 chassis with the 3.0T engine.

Fitment confirmation is required before production. Please provide your model year, exact model, chassis code, engine, and VIN when available so Echo Exhaust can confirm compatibility and final configuration.

Browse more Audi exhaust systems.

Material choices: 304 stainless steel or titanium.

This product is listed as a valved system. The exact valve-control setup is not specified in the current catalog and must be confirmed before production.

The exhaust-tip finish is not specified in the current catalog. Confirm your preferred finish and final configuration with Echo Exhaust before production.

Professional installation is strongly recommended for this valved catback system.

Before installation, the installer should inspect the vehicle's connection points and available clearances and confirm that the supplied configuration matches the vehicle.

Package configuration depends on the selected material and confirmed product configuration. Final package contents will be confirmed before fulfillment.

This product is offered through a preorder workflow. Estimated processing time is 5–15 business days, followed by an estimated 5–10 business days in transit.

Review our Shipping Policy and Return & Refund Policy before ordering.

Will this fit my exact car? Fitment must be confirmed using your model year, exact model, chassis code, engine, and VIN when available.

Which materials are available? Choose 304 stainless steel or titanium.

How are the valves controlled? This is a valved system, but the exact control method must be confirmed before production.

Is professional installation recommended? Yes. Professional installation is strongly recommended.

Related fitment: Audi A4 B9 2.0T valved catback system.