Milltek Sport BMW X3M/X3M Competition LCI S58 OPF/GPF Back Exhaust System (F97)Milltek Sport BMW X3M and X3M Competition LCI S58 Particulate Filter Back Exhaust System completely transforms the facelift 2022+ X3M's driving experience with enhanced sound and a noticeable performance gain, whilst retaining the factory petrol particulate filters. The system increases airflow of exhaust gases to reduce back pressure without compromising on emissions. Choose between a wide range of tip styles. Designed and manufactured in the UK!