Audi RS4 / RS5 B9 2.9T SS304 Downpipe
Unlock the Full Potential of Your B9 2.9T
Your Audi RS4/RS5 B9’s 2.9T twin-turbo V6 is a high-performance powerhouse—hampered by restrictive factory catalytic converters. Our TIG Industry SS304 Downpipe is the ultimate bolt-on upgrade to eliminate exhaust bottlenecks, unlock raw power, and deliver the aggressive sound your RS deserves.
Precision-engineered for 2017+ Audi RS4/RS5 B9 2.9T models, this downpipe is built to replace the restrictive stock system with a free-flow design that transforms your driving experience.
Key Features
- Premium SS304 Stainless Steel Construction: Mirror-polished T304 stainless steel offers exceptional corrosion resistance, heat tolerance, and long-term durability, even under extreme track or high-boost conditions.
- Precision TIG Welded Seams: Professional-grade TIG welds ensure leak-free, reliable performance at high exhaust temperatures and boost pressures, with a clean, factory-style finish.
- High-Flow, Direct-Fit Design: Mandrel-bent tubing eliminates flow restrictions, while factory-style flanges and mounting points ensure a perfect, hassle-free bolt-on fit with no cutting or modification required.
- Integrated O2 Sensor Bung: Features dedicated bungs for OEM oxygen sensors (for off-road/track use only; always check local emissions regulations before installation).
- Pair Design for V6 Twin-Turbo Layout: Sold as a complete set (left + right downpipes) to match the 2.9T V6’s dual exhaust banks, ensuring balanced airflow and performance gains across both cylinders.
Performance Benefits
- Instant Horsepower & Torque Gains: Unlocks up to +20-35 HP and +30-45 ft-lbs of torque, with even more dramatic improvements when paired with a custom ECU tune.
- Eliminates Turbo Lag: Reduces backpressure drastically, allowing the twin turbos to spool faster for sharper throttle response and instant power delivery.
- Aggressive, Race-Ready Sound: Free-flow design delivers a deep, throaty exhaust note at idle and a smooth, powerful roar under wide-open throttle, without harsh cabin drone.
- Reduced Exhaust Temperatures: Improved airflow lowers heat buildup in the exhaust manifold, preventing heat soak and protecting critical engine components during aggressive driving.
Fitment & Notes
- Compatible Vehicles: 2017+ Audi RS4 (B9) / RS5 (B9) 2.9T V6 Twin-Turbo
- Installation: Direct bolt-on replacement for factory catalytic converters; no permanent modifications needed.
- Important Disclaimer: This downpipe is intended for off-road and track use only. It is not street-legal in regions with emissions regulations. Always verify local laws before purchase and installation.
Built for Enthusiasts, by Enthusiasts
At TIG Industry, we engineer every exhaust component with track-proven performance and uncompromising quality. Our B9 2.9T downpipe is rigorously tested to handle the high boost and heat of the RS engine, so you can push your car to its limits with confidence.
Ready to free your RS4/RS5 from factory restrictions? Upgrade to our SS304 Downpipe today and experience the true sound and power of the 2.9T twin-turbo.
