Description
Milltek SSXAU645 Cat-Back Exhaust for the Audi S4 and S5 B9 (Non-Sport Diff)
The Milltek SSXAU645 is a cat-back exhaust with quad 90mm GT90 tips and an ECA (electronic control adaptor) option, engineered for non-sport-differential Audi S4 B9 Saloon and Avant, plus S5 B9 Sportback (2016 on, left-hand drive). It gives the 3.0 turbo V6 a deeper, adjustable soundtrack while bolting directly to the OEM mounting points. It ships to Dubai, across India and worldwide.
Key Specifications
| Part Number |
SSXAU645 |
| Manufacturer |
Milltek Sport |
| Fitment |
Audi S4 B9 Saloon/Avant and S5 B9 Sportback, Non-Sport Diff (2016 on, LHD) |
| System Type |
Cat-Back Exhaust (Quad 90mm GT90, ECA) |
| Material |
304L aircraft-grade stainless steel |
| Tips |
Quad 90mm GT90 |
Features and Benefits
- ECA option for adjustable valve control and sound
- Mandrel-bent 304L stainless steel for maximum flow and durability
- Quad 90mm GT90 tips for a purposeful rear-end look
- Direct bolt-on fit to the factory cat-back mounting points
Frequently Asked Questions
Does this fit my S4 or S5? Yes, it fits non-sport-diff B9 Audi S4 Saloon/Avant and S5 Sportback, left-hand drive.
What is ECA? An electronic control adaptor option for valve and sound control.
Is it a bolt-on installation? Yes, it replaces the factory cat-back with no cutting required.
Need help confirming fitment or specification? Message our exhaust specialists on WhatsApp at +971 50 308 5760 and our team will guide you before you order.