Manufacturer SKU: AUD.C8.RS6.FF.400C.BR Audi C8 RS6 / RS7 – EPA-Compliant 400 Cell Catted Downpipes Engineered for the 4.0T Twin-Turbo V8 • High-Flow • Compliant • Introducing Our NEW 400 Cell EPA-Compliant Downpipes for C8 RS6 / RS7 The Audi C8 RS6 and RS7 combine executive refinement with supercar-level performance, powered by the formidable 4.0T twin-turbo V8. While factory catalysts restrict exhaust flow and mute the engine’s full character, our NEW EPA-compliant 400 cell high-flow catted downpipes are engineered to reduce backpressure, enhance turbo efficiency, and unlock a deeper, more commanding exhaust tone — all while maintaining emissions compliance standards. This upgrade forms the foundation of serious 4.0T performance. Why Upgrade to 400 Cell? - EPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust efficiency while maintaining compliance standards. - Improved Turbo Spool & Mid-Range Response: Reduced restriction sharpens throttle input and power delivery. - Enhanced Exhaust Character: Deeper tone with stronger turbo acoustics and more pronounced high-RPM presence. - Street & Performance Balanced: Noticeable gains without compromising daily refinement. Performance & Engineering - Optimized Flow Architecture: Minimizes backpressure while preserving catalyst efficiency. - Mandrel-Bent Tubing: Smooth internal transitions for maximum exhaust velocity. - Precision TIG Welding: Built to endure sustained high exhaust temperatures and boost levels. - Direct OEM Bolt-On Installation: Utilizes factory mounting locations for straightforward installation. - Engineered to Pair Seamlessly with Valvetronic Exhaust Systems Sound Transformation - Stock Exhaust + Downpipes: Noticeable increase in depth and turbo presence with enhanced exhaust clarity. - Valvetronic Exhaust + Downpipes: Maximum transformation — stronger presence, sharper transitions, and a true Audi Sport-inspired signature. Construction & Durability - Premium high-grade stainless steel construction - High-temperature resistant 400 cell catalyst cores - OEM-style sensor placement for proper operation - Engineered for long-term reliability under high-performance conditions Unleash the full potential of your C8 RS6 or RS7 — starting at the source. 📩 Questions or ordering assistance? customerservice@valvetronic.com