Audi B9 S5 / S4 V6 3.0T Downpipe | High-Flow Performance Upgrade

This high-performance downpipe is engineered for the Audi B9 S5 and S4 3.0T V6 engine, delivering significant improvements in exhaust flow, turbo spool, and overall throttle response. Its mandrel-bent, high-flow structure provides reduced backpressure and smoother exhaust velocity, making it the ideal b9 s4 downpipe solution for both stock and tuned vehicles.

Constructed from premium T304 stainless steel with TIG-welded precision, this component ensures durability and temperature resistance. Its optimized design supports stronger mid-range torque, improved turbo efficiency, and a deeper, more refined exhaust tone—perfect for owners searching for a reliable audi s5 downpipe option.

This system installs seamlessly with OEM and aftermarket setups and serves as a key upgrade path for tuning projects. It integrates smoothly into existing platforms and is especially effective as part of a full audi s4 downpipe performance package.

For enthusiasts pursuing more power potential, this product also functions perfectly as a b9 s5 downpipe, offering balanced performance gains and greater exhaust responsiveness. Combined with a properly tuned audi s5 exhaust, it delivers noticeable improvements in acceleration and driving dynamics.

✅ Features:

• High-Flow Design for Maximum Performance

• Direct Bolt-On Installation

• Durable Stainless Steel Construction

• Optimized for Audi S4 S5 Exhaust Upgrade

• Precision TIG Welding

• Improved Turbo Spool & Exhaust Tone

⚙️ Fitment:        

   Compatible with :

• Audi S5 (B9 / B9.5) – 3.0T V6

• Audi S4 (B9 / B9.5) – 3.0T V6