Have we mentioned we love your RS 4? Like, we really love it. It's a highly engineered performance machine and deserves an exhaust system designed with the same attention to detail. Sophisticated CAD modeling software allowed us to create a system that performs and sounds worthy of this autobahn stormer. You're looking at the Track Edition - the sibling that gets in trouble. If you love the sound of a muscular V8, but need something more manageable for transporting clients, go with the Touring Edition - not this one! But if you're ready to dial this thing to 11, the Track Edition is as aggressive as it gets. And sound isn't the end of the story. Every RS 4 exhaust from AWE sports 3.15" (80mm) slash-cut double walled tips, with AWE logos - available in with your choice of Chrome Silver or Diamond Black finishes. Dial up that RS 4!