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

Cat-Back Exhaust
Brand: Milltek
Part #: SSXAU1117
SKU: MK-SSXAU1117
Milltek Non-Resonated Cat-Back exhaust system for Audi B9 S5 Sportback with Sports Diff and factory brace bars. Direct bolt-on replacement using OEM hangers and mounting points-no modification required. Our loudest system in the B9 S5 lineup, engineered to deliver maximum sound character and measurable performance gains on the dyno. Hand-finished T304L stainless steel construction with mandrel-bent piping throughout. 2.5" diameter main pipe flows to 4" GT-100 round tips, or upgrade to quad oval tips in polished stainless or Cerakote Black finish. Non-resonated design eliminates the mid-range resonance point for full-throttle presence; track-focused tuning suitable for closed-course use. • Fitment: Audi B9 S5 Sportback (2017-present) with Sports Differential and Factory Brace Bars • Material: T304L stainless steel, hand-finished • Pipe diameter: 2.5" mandrel-bent • Tip options: 4" GT-100 round or quad oval (polished or Cerakote Black) • Installation: Direct OEM fitment, no welding or modification • Sound character: Full-throttle note with minimal drone elimination Engineered in-house and dyno-proven. 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