Constructed from lightweight high-grade titanium with complex parts made in Akrapovics in-house foundry the Evolution Line provides a weight saving over the stock system, and increases power and torque throughout the rev range. The Evolution Line (Titanium) has been designed to meet ECE type approval as a plug-and-play system and fits directly onto the BMW X5 Ms stock downpipes. It is tuned to provide a perfect sound accompaniment to the cars sporty feel, and is perfectly finished with hand-crafted carbon-fiber tailpipes to offer a beautiful visual appeal. The distinctive round design tailpipes have titanium inner parts to make them stand out from the crowd even more. The tailpipes have been impeccably crafted and designed to fit seamlessly with the optional carbon-fiber diffuser. It is also available with the optional Akrapovic Sound Kit.