This product is constructed with high-grade titanium tubes and a muffler, which are attached to the car's stock downpipes with a high-quality stainless-steel link pipe and finished with handcrafted carbon-fibre tailpipes and a titanium inner sleeve. Weighing in at 36.2% lighter than the standard setup, this system provides power gains of 7.5 kW (10.2 hp) at 5,450 rpm and torque increases of 8.8 Nm at 3,900 rpm (when tested on The Akrapovic dyno against an Audi RS 3 with a standard stock exhaust). The in-house foundry casts the housings for the two exhaust valves, one for each side of the muffler to tailor the sound. The distinctive tones of the five-cylinder engine serve up a relaxed and pleasing purr in comfort mode, with a tasteful reminder of the car's potential when cruising in dynamic mode, and then the full sound experience is delivered while accelerating and reaching for the limit. A high-gloss handmade rear carbon-fibre diffuser is available as an optional extra, as is the optional Akrapovic Sound Kit to offer full control over the exhaust tones. If The Akrapovic Sound Kit is fitted, the Evolution Line (Titanium) ECE type-approval certificate is not valid. The exhaust system is ECE type approved for cars equipped with an Otto/gasoline particulate filter.. Akrapovic 22-25 Audi RS 3 Sportback (8Y) Evolution Line Cat Back (Titanium). Akrapovic 22-25 Audi RS 3 Sportback (8Y) Evolution Line Cat Back (Titanium). Akrapovic Evolution Line Titanium Exhaust System. 22-25 Audi RS 3 Sportback (8Y). Exhaust System Kit. Evolution Line

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