The MagnaFlow Audi S4 Sport Series 16586 enhances your 4.2L 2004-2006 Audi S4 with an aggressive character that is sure to help you stand out from the other Audi S4 you encounter on the street. With its 2.5in. diameter fast-flowing mandrel bent main piping that passes through 4 Straight-Through mufflers before ending in a Dual Split Rear exit with 4in. Polished Welded-Double Wall-Angle Cut-Rolled Edge-Resonated tips, this dyno-proven Audi S4 exhaust system refuses to be ignored. As such, 16586 is tuned to produce our powerful, resonant signature exhaust note at Agressive exterior and Moderate interior sound levels, so please check to ensure compliance with local noise regulations. The system's cat-back design replaces all your import's stock exhaust components from the catalytic converter on back. Extensive 3D scanning and CNC precision robotic manufacturing techniques are used to ensure that your exhaust system fits perfectly with just a simple do-it-yourself installation process. The durable, corrosion resistant stainless steel construction of 16586 is backed by MagnaFlow's limited lifetime warranty.

Touring Series Performance Cat-Back Exhaust System; 2.5in.; Incl. Tru-X Pipe Assy/Dual MidMufflers/Dual 4x4x14in. Mufflers/Dual 4in. Round Tips; Dual Split Rear Exit; Stainless;

The Touring Series Stainless Performance Exhaust system delivers dyno proven power with a comfortable interior sound and performance exterior sound.

What's Included:

• Magnaflow SYS C/B 04-05 Audi A4/S4 4.2L DSR

Vehicle Fitment:

• 2004-2006 Audi S4 Base
• 2004-2006 Audi S4 Cabriolet
• 2004-2006 Audi S4 Avant