{"product_id":"audi-c8-rs6-rs7-400-cell-catted-downpipes","title":"Audi C8 RS6 \/ RS7 400 Cell Catted Downpipes","description":"\u003ch1\u003e\u003cstrong\u003eAudi C8 RS6 \/ RS7 – EPA-Compliant 400 Cell Catted Downpipes\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch3\u003eEngineered for the 4.0T Twin-Turbo V8 • High-Flow • Compliant •\u003c\/h3\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eIntroducing Our NEW 400 Cell EPA-Compliant Downpipes for C8 RS6 \/ RS7\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe 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 \u003cstrong\u003eNEW EPA-compliant 400 cell high-flow catted downpipes\u003c\/strong\u003e are engineered to reduce backpressure, enhance turbo efficiency, and unlock a deeper, more commanding exhaust tone — all while maintaining emissions compliance standards.\u003c\/p\u003e\n\u003cp\u003eThis upgrade forms the foundation of serious 4.0T performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eWhy Upgrade to 400 Cell?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEPA-Compliant 400 Cell High-Flow Catalysts:\u003c\/strong\u003e Increased exhaust efficiency while maintaining compliance standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Turbo Spool \u0026amp; Mid-Range Response:\u003c\/strong\u003e Reduced restriction sharpens throttle input and power delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Exhaust Character:\u003c\/strong\u003e Deeper tone with stronger turbo acoustics and more pronounced high-RPM presence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStreet \u0026amp; Performance Balanced:\u003c\/strong\u003e Noticeable gains without compromising daily refinement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003ePerformance \u0026amp; Engineering\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Flow Architecture:\u003c\/strong\u003e Minimizes backpressure while preserving catalyst efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMandrel-Bent Tubing:\u003c\/strong\u003e Smooth internal transitions for maximum exhaust velocity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision TIG Welding:\u003c\/strong\u003e Built to endure sustained high exhaust temperatures and boost levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect OEM Bolt-On Installation:\u003c\/strong\u003e Utilizes factory mounting locations for straightforward installation.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEngineered to Pair Seamlessly with Valvetronic Exhaust Systems\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eSound Transformation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStock Exhaust + Downpipes:\u003c\/strong\u003e Noticeable increase in depth and turbo presence with enhanced exhaust clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValvetronic Exhaust + Downpipes:\u003c\/strong\u003e Maximum transformation — stronger presence, sharper transitions, and a true Audi Sport-inspired signature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cstrong\u003eConstruction \u0026amp; Durability\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePremium high-grade stainless steel construction\u003c\/li\u003e\n\u003cli\u003eHigh-temperature resistant 400 cell catalyst cores\u003c\/li\u003e\n\u003cli\u003eOEM-style sensor placement for proper operation\u003c\/li\u003e\n\u003cli\u003eEngineered for long-term reliability under high-performance conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eUnleash the full potential of your C8 RS6 or RS7 — starting at the source.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e📩 Questions or ordering assistance? customerservice@valvetronic.com\u003c\/p\u003e","brand":"Valvetronic Designs","offers":[{"title":"Default Title","offer_id":52584407367967,"sku":"AUD.C8.RS6.FF.400C.BR","price":3999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/5701\/0207\/files\/DSC07927_Shopify_Custom_Size.jpg?v=1780089210","url":"https:\/\/redlinecarco.com\/products\/audi-c8-rs6-rs7-400-cell-catted-downpipes","provider":"Redline Car Co.","version":"1.0","type":"link"}