Exhaust system L/R: 088017 1500 + tailpipe set! The original exhaust must be cut! Only suitable for models with M sport option and in combination with the original rear diffuser of the BMW G30 550i (original BMW part no. 51 12 8 067 763)! L/R sports exhaust system (without tailpipes) with integrated valve, incl. CE approval Original tube Ø 85 mm, REMUS tubes 2x Ø 60 mm in 1x Ø 84 mm Only suitable for models with M sport option and in combination with the original rear diffuser of the BMW G30 550i (original BMW part no. 51 12 8 067 763) ! The valve activation is done with the original actuator via the vehicle's on-board electronics.