Milltek Sport catback exhausts for the B8 Audi S4 are stainless steel, mandrel bent, sport precision tuned systems that are hand crafted at the Milltek factory in the UK. Piping Diameter is 2.37" (60.30mm). For the 3.0T, back-pressure will be reduced by at least 30% from the stock Exhaust. Systems are available in bout Resonated or Non-Resonated.
Resonated Version This system comes with downpipes that start after your factory cats. It is entirely 60mm. This section includes a flex joint like stock. It may look like the factory catalytic converters are removed, but they are not. The stock exhaust has small mufflers by the downpipes that look like cats. This system reduces the stock drone (yes the stock system drones) and actually has pleasant sound while reducing back pressure. Comes with front muffler, center muffler and a left and right rear section each with mufflers. Tips are 80mm round quads, similar stock. The lower priced system (Non-Resonated, below) offers a bit more sound for a great price.
Non-Resonated Version There is some growl, not too intrusive, that gives the S4 the aggressive sound it deserves. This version comes with large oval tips or quad polished tips. The difference between this system and the resonated system is the elimination of the left and right rear mufflers. This lower priced system offers the ultimate race sound.
Part # SSXAU261 - S4 (B8) Catback Resonated Polished Quad Tips - LH Front Pipe - RH Front Pipe - Front Silencer Assembly - Center Silencer Assembly - LH Rear Section (no Tip) - RH Rear Section (no Tip) - LH Tip Assembly - Brace Bar - RH Tip Assembly Pipe Diameter: 2.37" (60.30mm) Tailpipe Style: Twin 80mm GT-80
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