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.

Addiditional Info: G82 M4 & M4 Competition S58 3.0 Turbo (North American / ROW Non-OPF/GPF Cars Only)