The MagnaFlow Audi S5 Sport Series Cat-Back Performance Exhaust System enhances your 4.2L Audi S5 with an aggressive character that is sure to help you stand out from the other Audi S5 you encounter on the street. With its 2.5in. diameter fast-flowing mandrel bent main piping that passes through 3 Straight-Through mufflers before ending in a Quad Split Rear exit with 3.5in. Polished Welded-On Double Wall Angle Cut Folded Edge tips, this dyno-proven Audi S5 exhaust system refuses to be ignored. As such, 16598 is tuned to produce our powerful, resonant signature exhaust note at Aggressive 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 16598 is backed by MagnaFlow's limited lifetime warranty.

Additional Information

Magnaflow Sport Series Stainless Cat-Back System

Part Type

Exhaust System Kit

Features and Benefits

• Dyno Proven Performance
• Dyno-proven performance
• High-Performance Lightweight Design
• Racing inspired sound

Product Details

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

• Dyno Proven Performance
• Dyno-proven performance
• High-Performance Lightweight Design
• Racing inspired sound

MagnaFlow Touring Series performance exhaust systems are an ideal choice for those seeking increased performance and better economy. Their straight-through flow designs deliver the ultimate in unrestricted horsepower and torque, while maintaining exhaust efficiency. An engineered balance of interior and exterior noise levels, these kits offer the smooth, deep sound you want—and the wide-open power you need! Touring Series systems feature 409 stainless steel components, all mandrel-bent tubing, and a lifetime construction warranty; they're tested against SAE j1169 standards. MagnaFlow Touring Series performance exhausts are available in numerous configurations, including cat-back and rear axle-back; single, dual, tri, or quad mufflers; and several outlet and tip options. Order the model tailored for fitment on your specific vehicle.

Please note that this information serves as a fitment guide only. For specific fitment questions or clarifications, please contact us, as manufacturers may introduce variations and modifications during model year or regional revisions. While we strive to provide accurate data, fitment details may vary by region; therefore, compatibility outside the listed region and submodel variant cannot be guaranteed.

Detailed Compatibility

This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.