Scorpion BMW M240i OPF Back Exhaust System (G42)Scorpion Exhausts developed this awesome, great value stainless steel exhaust system for the G42 M240i. The BMW M240i system runs from the particulate filters all the way back to the tips. The Scorpion system adds a much louder and fruitier exhaust note and offers up to 3. 1kg weight saving (depending on variation) and a power boost over the factory rear silencer. The Scorpion rear silencer is smaller than OEM to increase airflow whilst still reducing