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.

What better way to appreciate your Audi S4 Quattro than by installing a Borla T-304 austenitic stainless steel exhaust system and letting your engine reach new heights. Proven performance gains highlight each aspect of your vehicle’s acceleration and power.

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.

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.

From the masters of S4 performance, AWE proudly presents the B9 S4 exhaust solution. Signature AWE tone, performance, and options for every taste and budget. Max gains of 16 hp and 17 ft-lbs of torque at the crank (exhaust)

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.

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

Our cat back exhaust system will enhance the sound that Audi created from the factory by making it smoother, deeper, and louder. Built as a direct OEM replacement, our exhaust system is easy to install with simple hand tools; no cutting or welding required.

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.

APR's B6/B7 S4 Exhaust is offered as both a full or as a catback system. The catback system is a complete stainless steel, mandrel bent, cat-back exhaust. The exhaust is a dual 2.5" system that begins at the factory downpipes and continues to an innovative center muffler.