Milltek Sport

Milltek SSXAU048 Non-Resonated Cat-back Exhaust Audi B7 S4

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More than 34 years of continuous exhaust development and technical expertise are drawn upon to develop the ultimate Milltek Sport range of performance products. The Milltek SSXAU048 Exhaust is a fully polished T-304 stainless steel, CNC mandrel bent, cat-back system. The Milltek exhaust begins after the downpipes with dual 2.25" piping, and continues back to the mufflers and quad polished stainless steel double walled rolled exhaust tips with the Milltek logo. The Milltek exhaust improves power and response and gives a deeper more aggressive sound.

Milltek SSXAU048 Exhaust Vehicle Fitment:


  • 2007 Audi S4
  • 2008 Audi S4
  • 2005.5 Audi S4
  • 2006 Audi S4

SSXAU048 Specs:

  • Tubing Diameter: 2.25"
  • Tips: Quad 3.0" (76mm) bevel-cut, round

Milltek SSXAU048 Cat Back Manufacturing:
Milltek exhausts are fully fabricated in the UK from T-304 stainless steel to prevent corrosion and ensure a long life. CNC mandrel bends are used to maximize flow and performance. TIG welding and CNC'ed hangers ensure a perfect fit. Finally the exhausts are fully polished for show car looks.

Milltek SSXAU048 Catback Install:
Installation of Milltek catback exhausts typically takes 1-2 hours. Basic hand tools are necessary for installation, no cutting or welding is required. Please observe all safety precautions and follow proper installation guidelines while working on your vehicle.

Milltek SSXAU048 Cat-back Warranty:
Milltek cat-back exhaust systems are covered by an anti-corrosion and manufacturing defect warranty. This warranty does not cover labor, misuse, faulty installation, failure of related parts or parts purchased other than from Milltek. This warranty extends to the original purchaser for as long as they own the vehicle and the exhaust.

This product ships directly from Milltek Sport in the United Kingdom
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all exhaust
cat-back system

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