Cat Back Non-Resonated (Louder) with Quad Cerakote Black Oval Trims S4 B9 - Saloon/Sedan & Avant (Non Sport Diff Models) - LHD Cars - 2016 - SSXAU656

Cat Replacement Pipe Cat Bypass fits with OE and Milltek Sport Cat back Systems S4 B9 - Saloon/Sedan & Avant (Non Sport Diff Models) - LHD Cars - 2016 - SSXAU674

Hi-Flow Sports Cat and Downpipe 200 Cell HJS High Flow Sport Cat fits with OE and Milltek Sport Cat back Systems S4 B9 - Saloon/Sedan & Avant (Non Sport Diff Models) - LHD Cars - 2016 - SSXAU673

Active Valve Control Uses ESP button and drive select S4 B9 - Saloon/Sedan & Avant (Non Sport Diff Models) - LHD Cars - 2016 - SSXAU677

Milltek

Cat-back - Resonated (quieter) with Jet-100 Cerakote Black Trims - S4 - 4.2 V8 quattro B6 Saloon/Sedan/Avant/Cab - 2003 - SSXAU874

Milltek

Cat-back - Resonated (quieter) with GT-100 Cerakote Black Trims - S4 - 4.2 V8 quattro B6 Saloon/Sedan/Avant/Cab - 2003 - SSXAU875

Milltek

Cat-back - Non-resonated (louder) with Jet-100 Cerakote Black Trims - S4 - 4.2 V8 quattro B6 Saloon/Sedan/Avant/Cab - 2003 - SSXAU872

Milltek

Cat-back - Non-resonated (louder) with GT-100 Cerakote Black Trims - S4 - 4.2 V8 quattro B6 Saloon/Sedan/Avant/Cab - 2003 - SSXAU873

Milltek

Active Sound Control V2 with 8 Selectable Sound Files - S4 - 3.0 Bi-TDI B9 Saloon/Avant (Diesel) - 2019 - 2024 - SSXAU668

Milltek

Cat Replacement Pipes - Manual Only. Must be fitted with the Milltek Sport cat-back system - S4 - 4.2 V8 quattro B7 Saloon/Sedan? Avant? & Cabriolet - 2004-2009 - SSXAU289_1

Milltek

Cat-back - Non-Resonated / Quad 76.2mm Tailpipes - S4 - 4.2 V8 quattro B7 Saloon/Sedan? Avant? & Cabriolet - 2004-2009 - SSXAU048

Milltek

Cat-back - Resonated / Quad 76.2mm Tailpipes - S4 - 4.2 V8 quattro B7 Saloon/Sedan? Avant? & Cabriolet - 2004-2009 - SSXAU046

Milltek

Cat-back - Resonated (quieter) - S4 - 4.2 V8 quattro B6 Saloon/Sedan? Avant? & Cabriolet - 2003-2005 - SSXAU296_1

Milltek

Cat-back - Non-resonated (louder) - S4 - 4.2 V8 quattro B6 Saloon/Sedan? Avant? & Cabriolet - 2003-2005 - SSXAU295

Milltek

Cat Replacement Pipes - Manual Only. Must be fitted with the Milltek Sport cat-back system - S4 - 4.2 V8 quattro B6 Saloon/Sedan? Avant? & Cabriolet - 2003-2005 - SSXAU289

Milltek

Cat-back - Resonated (quieter) - S4 - 4.2 V8 quattro B6 Saloon/Sedan? Avant? & Cabriolet - 2003-2005 - SSXAU100_a

Milltek

Cat-back - Non-resonated (louder) - S4 - 4.2 V8 quattro B6 Saloon/Sedan? Avant? & Cabriolet - 2003-2005 - SSXAU038

Milltek

Cat-back - ValveSonic Electronic Valved System. Titanium Tips - S4 - 3.0 Supercharged V6 B8.5 - 2012-2016 - SSXAU408_13

Milltek

Cat-back - ValveSonic Electronic Valved System. Polished Tips - S4 - 3.0 Supercharged V6 B8.5 - 2012-2016 - SSXAU407_10

Milltek

Cat-back - ValveSonic Electronic Valved System. Black Velvet Tips - S4 - 3.0 Supercharged V6 B8.5 - 2012-2016 - SSXAU406_7