Milltek OPF/GPF Bypass Non-Resonated (Louder) For OEM Downpipes (With Flange) & System - BMW F90 M5 LCI (2020 Onwards) A4 (B8/8K) By replacing the OEM airbox

By replacing the OEM airbox with our Patent Pending Venturi housing we have ensured that the airlfow remains as laminar as possible

Exhaust system also fits to M3/M4 CS (Sport Club) and GTS version

our KW height adjustable spring kits delivery content always includes the vehicle-specific bump stops with dust protection system to protect your standard suspension against tear & wear caused by spray and salt

We have also managed to increase the inlet tube cross-sectional area by over 30% compared to the stock intake as it feeds through the openings in the strut braces

Milltek OPF/GPF Bypass Non-Resonated (Louder) For OEM Downpipes (With Flange) & System - BMW F90 M5 LCI (2020 Onwards) A4 (B8/8K) By replacing the OEM airboxFits to the OE Downpipes and OE OPF GPF Back System. For Vehicles with Flange Connection to OE Downpipes (Approx July 2020 Onwards) Requires OPF Bypass Module or Stage 2 ECU Tune Our range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their