Akrapovi World Championship Winning Exhaust System Technology Akrapovi Evolution Titanium Exhaust System 2017 2019 Alfa Romeo Quadrifoglio Adaptive Automotive Akrapovi Evolution Line (Titanium) Akrapovi World Championship Winning Exhaust System Technology. Featuring a muffler and collector with a resonator made from lightweight titanium and link pipes made of high grade stainless steel, the Evolution Line (Titanium) exhaust system fits directly onto the Giulia Quadrifoglios stock downpipes. The system includes parts cast in the companys in house foundry, such as the valve housing and X part in the muffler, which is perfectly formed to allow exhaust gases to mix at a precisely defined mixing ratio. Developed to deliver both power and torque gains throughout the range and significantly reduce back pressure, it is finished with handcrafted carbon fiber and titanium tailpipes to enhance the visual enjoyment of the exhaust. In depth engineering has produced a deep and sporty sound with no unwanted drone, perfectly suitable for everyday use. It is distinctly different from the stock system, especially during partial load, when shifting, and at higher RPM's, where it delivers a pure racing sound. Application: 2017 2019 Alfa Romeo Giulia Quadrifoglio