Akrapovic Evolution Line (Titanium) for OPF Porsche Cayenne (536)EV EvolutionThis exhaust is constructed from high grade lightweight titanium and features a central muffler that expands to produce two sets of tailpipes, with a choice of either a titanium or carbon fibre finish designed to complement the lines of the car. Two valves on either side of the muffler control the airflow and are contained in valve housings cast in the Akrapovi in house foundry. Fully ECE type approved, the Evolution Line (Titanium) will