MagnaFlow 07 Audi Q7 V8 4.2L Dual Split Rear Exit Stainless Cat-Back Perf ExhaustThe MagnaFlow Audi Q7 Street Series 15085 brings out the personality of your 3. 0L, 4. 2L 2007 2015 Audi Q7 with our signature resonant, powerful engine tone and dyno proven performance. Thanks to its fast flowing, mandrel bent 2. 5in. main piping and 2 Straight Through mufflers ending in a Dual Split Rear exit with 4in. Polished Welded Double Wall Angle Cut Folded Edge tips, this Audi Q7 exhaust kit has the performance chops to match its sporty sound