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 at part throttle cruising, while also producing a war-cry wail when full throttle is applied. Our exhausts are like bespoke suits: each is hand made utilizing only the finest casing and packing materials, and they command respect without calling unwanted attention to themselves. Sophisticated, refined, and powerful, all at once. Whether you??re looking for full blown roar with our Track Edition Exhaust System or a more subtle lower decibel with the Touring Exhaust System, our two A4 Exhaust options provide a solution for every discerning owner. Each cat back system features an H-pipe crossover tube at the front to maximize exhaust scavenging for maximum power, as well as to take a harsh edge off the exhaust sounds. Tubing diameter for the entire system is 2.25". A4 3.2L Touring Exhaust System The more civilized of the family is the A4 3.2L Touring Exhaust. This system features front, central and rear resonators to keep overall volume to an acceptable level. Our resonators are a straight through design to aid in sound tuning without providing any restriction. The Resonated Touring Exhaust is the perfect Performance complement for the daily driven A4 3.2L. A4 3.2L Track Edition Exhaust System The business end of this exhaust is not for the faint of heart. Dig into the throttle and you??ll realize why we call this the ??track edition.?? This is a loud exhaust, with potential for drone due to the strategic elimination of certain resonators. Family drivers and client entertainers, we suggest the Touring exhaust. Tips and valences Both Touring and Track Editions of our A4 3.2L Exhaust System are available with: Dual 90mm (3.5 inch) tips designed to work with the stock rear bumper valance Quad 80mm (3.15 inch) slash cut tips designed to work with the 2005.5 ?? 08 S4 rear valance No matter the tip option you go with, they come engraved with AWE Tuning logos and are double walled to ensure a mirror polish, even under hard usage. Tips are in Polished Silver or our noted Diamond Black plating. Also, each tip is individually adjustable so you can set stagger and depth into bumper to suit your personal taste.