This AWE lineup represents the finest in 3.0T exhaust technology. From the rowdy Track Edition to the sophisticated Touring Edition to resonated or non-resonated downpipes, there’s a performance option for every type of Audi S4 3.0T driver.

Borla performance exhaust systems for the Audi S4 Exhausts have more HP, aggressive sound, & a million-mile warranty. Great Aftermarket Muffler & parts.

Our new valved setup for the B8 / B8.5 platform delivers incredible sound throughout all rev ranges and allows for the ultimate flexibility. Constructed of T304 Stainless Steel, this system runs 2.5 inches all the way back to the tips.

Change the tone of your B8 S4/S5 3.0T exhaust with an easy-to-install downpipes with integrated X-pipe to your factory cat back exhaust. Brand: ES#: 4376068 Mfg#: 012616LA01KT

MagnaFlow offers premium performance exhaust systems for your Audi S4. Determine the power and sound you demand for your S4 and shop all available exhaust systems online. Select your Audi S4 year, sub-model and engine details to buy the best exhaust system that fits your needs.

S4 Catback, Turboback Systems and Downpipes, Decats and Sports Cats from Milltek - Stainless Exhausts with finance available. Milltek performance exhausts are made in the UK.

This Cat Back exhaust system is the premier upgrade for all S4 owners looking to maximize the performance from their 3.0L 24V TFSI V6 engine. Our cat back exhaust system will enhance the sound that Audi created from the factory by making it smoother, deeper, and louder.

Audi S4 Exhausts from Scorpion Red Power. Increase the power of your S4 with our stainless steel performance exhausts

This Cat Back exhaust system is the premier upgrade for all S4 owners looking to maximize the performance from their 4.2L FSI V8 engine. Our exhaust system will enhance the sound that Audi created from the factory by making it smoother, deeper, and louder.

This Cat Back exhaust system is the premier upgrade for all S4 owners looking to maximize the performance from their 2.7L V6 Bi-Turbo engine. Our exhaust system will enhance the sound that Audi created from the factory by making it smoother, deeper, and louder.