Audi B9 S4 Milltek Sport Cat-Back Exhaust System
Milltek's Audi B9 offerings exude the engineering rigor and attention to detail that comes from experience developing prototype exhaust designs in highly demanding circumstances for race teams throughout the world.
Every single Milltek product offering is designed and manufactured in-house in the UK. Milltek tests each system on their own Dynamometer through many miles of subjective analysis and fine-tuning each component of each system for its specific application.
Quality
Fits:
Audi B9 S4 (2017+)
Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad GT-100 polished tips
Fits models without factory rear sports differential
Brand:
ES#:
3240933
Mfg#:
SSXAU650
No longer available
Cat-Back Exhaust System - Resonated With Exhaust Valves
2.50" stainless steel with quad GT100 polished tips
Fits models without factory rear sports differential
Brand:
ES#:
3240919
Mfg#:
SSXAU640
No longer available
2.5" High-Flow Downpipe
Featuring Milltek Sport Hi-Flow sports cat, fits with OE and Milltek cat-back systems.
Brand:
ES#:
3420821
Mfg#:
SSXAU673
Cat-Back Exhaust System - Resonated With Exhaust Valves
2.50" stainless steel with quad GT90 burnt titanium tips
Fits models without factory rear sports differential
Brand:
ES#:
3240921
Mfg#:
SSXAU647
No longer available
Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad GT-90 polished tips
Fits models without factory rear sports differential
Brand:
ES#:
3240937
Mfg#:
SSXAU655
No longer available
Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad GT90 burnt titanium tips
Fits models without factory rear sports differential
Brand:
ES#:
3240935
Mfg#:
SSXAU654
No longer available
Cat-Back Exhaust System - Resonated With Exhaust Valves
2.50" stainless steel with quad GT-90 titanium tips
Fits models without factory rear sports differential
Brand:
ES#:
3240925
Mfg#:
SSXAU646
No longer available
Cat-Back Exhaust System - Resonated With Exhaust Valves
2.50" stainless steel with quad Cerakote black velvet oval tips
Fits models without factory rear sports differential
Brand:
ES#:
3236155
Mfg#:
SSXAU649
Cat-Back Exhaust System - Resonated With Exhaust Valves
2.50" stainless steel with quad GT-90 polished tips
Fits models without factory rear sports differential
Brand:
ES#:
3240924
Mfg#:
SSXAU644
No longer available
Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad GT-90 cerakote black tips
Fits models without factory rear sports differential
Brand:
ES#:
3240936
Mfg#:
SSXAU658
No longer available
Cat-Back Exhaust System - Resonated With Exhaust Valves
2.50" stainless steel with quad polished oval tips
Fits models without factory rear sports differential
Brand:
ES#:
3240928
Mfg#:
SSXAU648
No longer available
Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad Cerakote black velvet oval tips
Fits models without factory rear sports differential
Brand:
ES#:
3240929
Mfg#:
SSXAU656
No longer available
Cat-Back Exhaust System - Resonated With Exhaust Valves
2.50" stainless steel with quad GT100 titanium tips
Fits models without factory rear sports differential
Brand:
ES#:
3240920
Mfg#:
SSXAU642
No longer available
Cat-Back Exhaust System - Resonated With Exhaust Valves
2.50" stainless steel with quad GT90 cerakote black tips
Fits models without factory rear sports differential
Brand:
ES#:
3240923
Mfg#:
SSXAU645
No longer available
Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad GT-90 titanium tips
Fits models without factory rear sports differential
Brand:
ES#:
3240938
Mfg#:
SSXAU657
Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad GT-100 burnt titanium tips
Fits models without factory rear sports differential
Brand:
ES#:
3240930
Mfg#:
SSXAU653
No longer available
Cat-Back Exhaust System - Resonated With Exhaust Valves
2.50" stainless steel with quad GT-100 burnt titanium tips
Fits models without factory rear sports differential
Brand:
ES#:
3236278
Mfg#:
SSXAU643
No longer available
Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad GT-100 carakote black tips
Fits models without factory rear sports differential
Brand:
ES#:
3240932
Mfg#:
SSXAU651
No longer available
Cat-Back Exhaust System - Non-Resonated (Louder)
2.50" stainless steel with quad polished oval tips
Fits models without factory rear sports differential
Brand:
ES#:
3240940
Mfg#:
SSXAU659
No longer available