Milltek Dual Catback Exhaust Audi S4 Sedan/Avant B6 04-05

The first and original catback exhaust for the new S4 V8 4.2, Milltek Sport. We all know that the stock exhaust is far too quiet and restrictive. Tuners in Europe have reported gains of 15hp (at the wheels) with this catback exhaust and that has been verified in the USA on a 4-Wheel Dynapack dyno along with a 20 lb-ft gain in torque (at the wheels). Awesome Milltek quality and fit, Dual 100mm tips. Get that deeper sound with the power to match. New non-resonated system available. Eliminates the two center mufflers for a louder sportier sound. Power equal to the resonated version but with a more aggressive attitude (not pictured). Milltek gives YOU the choice for your V8 S4. Please select below.

For Sound Clip (Manifold-Back Resonated) CLICK HERE

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