Z4

ECE R103 Approved Downpipe with High Flow Sports Cat (Fits to OE & Milltek Systems)

4.5inch Downpipe with 90mm Flex & 200CSPI Euro 6 Cat

4.5inch Downpipe with 90mm Flex & 100CSPI Race Race

Fits both OE and Milltek Sport Downpipe & OPF/GPF Back Systems - Required Stage 2 ECU Remap or OPF/GPF Bypass Module

Requires Stage 2 ECU Remap - Fits to Milltek Sport and OE Cat Back Systems

Plug & Play OPF/GPF Bypass Module - Does not require ECU Software