
Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Burnt Titanium TipsMilltek

Cat-Back Exhaust
Brand: Milltek
Part #: SSXAU558
SKU: MK-SSXAU558
The Milltek Resonated Cat-Back Exhaust System for the Audi B8 S5 3.0 TFSI Coupe and Cabriolet is a direct factory replacement engineered to enhance performance and refine your engine's acoustic character. This system uses mandrel-bent T304L stainless steel construction with OEM+ fitment and requires no modification for installation. Hand-finished quad Cerakote Black outlets deliver a premium appearance, while the 2.37" (60.30mm) bore diameter optimizes exhaust flow. The resonated design eliminates unwanted drone while preserving a sophisticated, controlled tone across the rev range-engineered for both spirited driving and daily composure. Fitment & Installation • Direct fitment: Audi B8 S5 3.0 TFSI Coupe (2009-2011) • Direct fitment: Audi B8 S5 Cabriolet (2009-2011) • Uses OEM hangers and mounting points • No vehicle modification required • Cat-back system (connects to factory catalytic converter) Construction & Materials T304L stainless steel throughout, hand-welded and finished to Milltek standards. Quad outlet tips feature Cerakote Black ceramic coating for durability and corrosion resistance. Mandrel-bent primary and secondary pipes ensure consistent bore diameter and minimize flow restrictions. Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Burnt Titanium TipsMilltek

Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Brushed Titanium TipsMilltek

Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Cerakote Black TipsMilltek

Cat-Back Exhaust
Milltek Resonated Cat-Back Exhaust | Lexus GX 550 3.4 Turbo V6 - Polished TipsMilltek