The Evolution Line (Titanium) takes these cars to heightened levels of auditory excitement, enhanced performance, and stunning good looks, all with a perfectly sculpted exhaust made from ultra-lightweight titanium alloys that reduce the weight from the stock exhaust by over 46%. Finished with hand-crafted carbon-fibre tailpipes, this exhaust has a stunning soundtrack and that unique Akrapovič signature. The sound is controlled by a complex X-connection, cast in the in-house titanium foundry, with a precisely machined valve flap to alter the tones, which can be controlled with a console button inside the cabin or by the Sound Remote Controller of the optional Akrapovič Sound Kit. When the X-connection valve is open, the exhaust system delivers a more continuous, smooth, and harmonic sound for a more comfortable ride, and in closed mode the acoustics have been maximised to give the cars a pure sporty and intense muscle-car V8 roar. Power and torque levels are increased throughout the entire rev range. It is ECE approved, so no re-map or other parts are needed and it is a simple plug-and-play installation.Fitting information for GT/GT Roadster models: the Evolution system only fits cars equipped with the AMG Performance exhaust.Fittment notice:This system does not fit on vehicles equipped with Otto particulate filter (OPF).