Akrapovic Tail pipe set (Titanium) for BMW X5 M (E70) and X6M (E71)Akrapovic Tail pipe set (Titanium) for BMW X5 M (E70) and X6M (E71) The tailpipes are the most visible part of the exhaust system, and thats why we dedicate particular attention to them at Akrapovi. In order to satisfy the most discriminating tastes, weve created special titanium alloy tailpipes. To make our tailpipes stand out from the rest even more, in addition to selecting the finest materials, we also made them larger.