Add bold sound and performance to your Audi S5 with the M.Flow Sport Series Cat-Back Performance Exhaust System, designed for the 2008–2012 4.2L models. Engineered to turn heads and elevate your driving experience, this system delivers a dyno-proven boost in both performance and attitude.
 
Crafted from durable, corrosion-resistant stainless steel, this cat-back system features 2.5" mandrel-bent piping for optimal exhaust flow. Exhaust gases pass through three straight-through mufflers, exiting in a sleek quad-split rear setup. The system is finished with 3.5" polished, double-wall, angle-cut tips with folded edges—offering both premium aesthetics and aggressive sound.
 
Tuned to produce M.Flow’s signature exhaust note, this setup delivers an aggressive exterior tone with a moderate in-cabin sound, striking the perfect balance for daily driving and spirited weekend runs. Be sure to check local noise regulations before installation.
 
Designed to replace all factory exhaust components from the catalytic converter back, this system installs easily thanks to precision CNC robotic manufacturing and 3D scanning technology—ensuring a direct, hassle-free fit.
 
Key Features:
Fits 2008–2012 Audi S5 (4.2L)
Sport Series: Aggressive exterior, moderate interior tone
2.5" mandrel-bent stainless steel piping
Triple straight-through mufflers for maximum flow
Quad rear exit with 3.5" polished double-wall tips
Direct-fit, bolt-on installation
Corrosion-resistant construction
Backed by M.Flow’s Limited Lifetime Warranty
 
Unlock the true potential of your Audi S5—sound, power, and precision in one performance-driven package.