Milltek BMW 4 Series F82/83 M4 Coupe/Convertible (Non-OPF equipped models only) 2014-2018 Active Valve Control Exhaust F36 428ix Larger internal diameter

Larger internal diameter

An Volt 4 Analog 0-5V input

Skoda Octavia RS 2

Tested with over 1000 HP on 1

Milltek BMW 4 Series F82/83 M4 Coupe/Convertible (Non-OPF equipped models only) 2014-2018 Active Valve Control Exhaust F36 428ix Larger internal diameterAll 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.