Cat-Back Exhaust

Milltek Non-Resonated Cat-Back Exhaust | Audi B8.5 S5 - Polished Tips

Brand: Milltek

Part #: SSXAU409

$2,945.71+2945 pts

In Stock

SKU: MK-SSXAU409

Ships direct from the warehouse Guaranteed fitment 30-day returns

Description

Milltek Non-Resonated Cat-Back Exhaust System for the Audi B8.5 S5 Coupe and Cabriolet (3.0 TFSI). Direct factory fitment using OEM hangers; no modification required. Replaces the complete cat-back section from the secondary catalytic converter rearward. Constructed from T304L stainless steel with 2.37" (60.30mm) mandrel-bent piping. Hand-finished polished quad outlet trims. The non-resonated design eliminates the OEM resonance chamber, delivering an engineered tone that emphasizes full-throttle character without drone at cruise. Uses the factory valve location for OEM valve compatibility where equipped. • 2.37" mandrel-bent T304L stainless steel construction • Direct cat-back fitment (secondary cats to tailpipe) • Hand-finished polished quad outlet trims • OEM+ installation using factory hangers • Non-resonated for road and track use • Dyno-proven flow improvement over OEM Engineered to Exhilarate. Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.