All-in-one Milltek Audi S4 3.0 Turbo V6 B9 - Saloon/sedan & Avant (sport Diff Models Only & Without Brace Bars) 2016-2023 Cat-back Exhaust Great Gift Idea [m9Lc3Via]

All Milltek performance exhaust systems are manufactured from T304L stainless-steel; giving you the satisfaction of knowing that our products are meant to last within some of the toughest environments. T304L is a highly durable form of stainless-steel that is far less susceptible to degradation and discolouration than many others of its kind, while it will last almost indefinitely.