Scorpion Exhausts Non-resonated GPF Delete - BMW F98 X4M (PRE LCI)This product removes a factory emissions control device and does not meet current emission laws. Fitment Years: 2019 2021 Model: X3 M X4 M including Competition Fits To: OEM Scorpion Pipe Diameter: 70mm 2. 75" BMW really came to be recognised as producers of performance saloons after the formation of their famous M Division in the 1970s and a real game changer for them was the launch of the E30 M3 in 1986 which went on to gain numerous championship