KYOSTAR Valved Sport Catback Exhaust System for 2022+ BMW G42 M240i B58 3.0T The KYOSTAR Valved Sport Catback Exhaust System is designed for the 2022+ BMW G42 M240i equipped with the B58 3.0T Twin Turbo engine. This complete exhaust upgrade improves exhaust flow efficiency, reduces exhaust restriction, and enhances turbocharged exhaust performance while providing adjustable sound control through an integrated valve system. Built from high-quality stainless steel with