Unlock the full performance and sound potential of your Audi RS4 B9 with the RENNVOX Downpipes With 200 Cell Catalytic Converter. Engineered specifically for Audi's 2.9L twin-turbocharged V6 (EA839), these premium high-flow downpipes deliver improved exhaust flow, faster turbo response and a more aggressive exhaust note while maintaining the benefits of high-quality 200 cell sports catalytic converters.

The factory downpipes are one of the most restrictive sections of the exhaust system. By replacing them with larger diameter mandrel-bent stainless steel tubing and premium metallic 200 cell catalytic converters, the RENNVOX system significantly reduces back pressure, allowing the twin turbochargers to spool more efficiently and helping the engine produce stronger power and torque throughout the rev range.

Developed and tested by EMS Carparts, the RENNVOX Audi RS4 B9 downpipes are manufactured from premium T304 stainless steel with precision TIG welding, CNC-machined flanges and integrated heat shielding to ensure excellent durability, fitment and long-term reliability in demanding performance applications.

Whether paired with a factory exhaust or a complete RENNVOX valved exhaust system, these downpipes provide noticeable improvements in throttle response, engine character and exhaust sound while supporting Stage 2 ECU tuning and other performance upgrades.

Benefits

• Improves exhaust gas flow from the turbochargers.
• Faster turbo spool and improved engine responsiveness.
• Reduces exhaust back pressure.
• Supports higher power levels for Stage 2 performance builds.
• Enhances the driving experience with a richer V6 soundtrack.
• Premium quality construction designed for long service life.

Vehicle Compatibility

• Audi RS4 Avant (B9) 2.9 TFSI Twin Turbo V6

Why Choose RENNVOX?

RENNVOX performance exhaust products are developed for enthusiasts who demand exceptional quality, performance and fitment. Every system is engineered using premium materials and precision manufacturing techniques to deliver reliable performance, improved driving dynamics and an unmistakable exhaust note.