MILLTEK SSXAU589 Catback Exhaust System for AUDI RS3 V8 2015+Description MILLTEK SSXAU589 Catback Exhaust System for AUDI RS3 V8 2015+ The Cat Back systems are designed as direct replacements for the original exhaust, offering improved sound and aesthetics. Multiple configurations are available, allowing the owner to select the desired increase in exhaust volume and achieve a more aggressive tone if preferred. All products are manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh