Akrapovic Slip On Line (Titanium) - BMW 1 Series F40 M135i | 2 Series F39 X2 M35iGiving much improved sensory experience, this lightweight exhaust is beautifully crafted from high grade titanium and finished with an eye catching carbon fibre tailpipes. With exhaust valve with its housing being casted in the in house foundry the sound from the exhaust is of a richer and higher frequency than stock, especially when shifting through the gears, all allied to a deep sound that enhances the cars engine tones and gives no discomfort or