Milltek CAT+ {Dual Quad Outlet with Active Valves Resonated with GT-100 Brushed Titanium Trims - Requires OE GT 5.0 Rear Diffuser} (2024 and Later Mustang 2.3 EcoBoost (S650 Fastback)) - SSXFD436

‌All of our 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 discoloration than many others of its kind, while it will last almost indefinitely