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Our exhausts have earned praise from owners and the press alike, due to their unique "Jekyll and Hyde" personality. We spend considerable time and effort during development to achieve remarkable civility when idling and cruising at part throttle, while also producing a war-cry wail when full throttle is applied. Sophisticated, refined, and powerful, all at once. We spent considerable time examining how to maximize the performance and options of this exhaust system. The exhaust features thick .065" wall T304L stainless steel tubing, double-walled exhaust tips to reduce heat discoloration, and perfect fitment, right to the OE downpipe (or any downpipe made to mate to the factory exhaust). The Cat Back system is topped off with our signature 3.15" beveled exhaust tips, in Chrome Silver. The tips sport stamped AWE logos and are double-walled to ensure a mirror polish even under hard usage. The system has multiple slip joints with high-quality stainless band clamps, to allow optimal adjustment.Why did we choose 2.5 inch and not 3.0 inch diameter for our MK5 exhaust? Our first prototypes of this system were indeed 3.0 inch, but we found that the effort it took to move the large mass of air in the 3.0 inch system at lower rpms resulted in a loss of torque with very little offsetting gain up top. Take a look at our 3.0 inch prototype dyno sheets here and see why a 3.0 inch system is not appropriate for this car.When upgrading your MK5, go with the team that started it all.