Akrapovic 2020+ BMW M135i / 2020 X2 M35i / Mini Clubman All4 Slip-On Line (Titanium) w/Carbon TipsS BM T 15H Giving a much improved auditory experience, this lightweight exhaust is beautifully crafted from high grade titanium and finished with eye catching carbon fiber tailpipes. With a built in exhaust valve, cast in Akrapovi's in house foundry, the sound from the exhaust is of a richer and higher frequency than stock. A specially engineered Y split enables the reduction of streaming caused by the OPF without any compromise to the pressure pulse