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.Additional Info: 94mm / 3.7inch ID Turbo Outlet to 80mm / 3.15inch Downpipe with 200CPSI Race Cat – Fits with OE OPF/GPF Back System Only
