{"product_id":"bmw-f80-f82-f83-f87c-m2c-m3-m4-400-cell-catted-downpipes","title":"Valvetronic Designs BMW F80\/F82\/F83\/F87C M2C \/ M3 \/ M4 400 Cell Catted Downpipes","description":"\u003cp style=\"margin:1em 0\"\u003eThe BMW F8X M2, M3 and M4 are icons of modern performance, powered by the high-revving S55 twin-turbo inline-6. While the factory catalysts prioritize restriction and sound suppression, our \u003cstrong\u003eNEW EPA-compliant 400 cell high-flow catted downpipes\u003c\/strong\u003e are engineered to unlock improved exhaust flow, sharper throttle response, and a more aggressive turbo character — all while maintaining emissions compliance standards.\u003c\/p\u003e\u003cp style=\"margin:1em 0\"\u003eThis is where the S55 truly comes alive.\u003c\/p\u003e\n\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003eStock Exhaust + Downpipes: Noticeable increase in volume with stronger turbo presence and improved clarity.\u003c\/li\u003e\n\u003cli\u003eValvetronic Exhaust + Downpipes: Maximum transformation — sharper crackles, enhanced turbo whistle, and a more aggressive high-RPM character.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003eEPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust efficiency while maintaining compliance standards.\u003c\/li\u003e\n\u003cli\u003eFaster Turbo Spool: Reduced backpressure enhances responsiveness and mid-range torque delivery.\u003c\/li\u003e\n\u003cli\u003eSharper Exhaust Tone: Cleaner, more pronounced turbo acoustics with a deeper overall note.\u003c\/li\u003e\n\u003cli\u003eStreet \u0026amp; Track Balanced: Noticeable performance gains without sacrificing daily drivability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"margin:1em 0\"\u003e\n\u003cli\u003eOptimized Flow Design: Minimizes restriction while preserving catalyst efficiency.\u003c\/li\u003e\n\u003cli\u003eMandrel-Bent Tubing: Ensures smooth internal transitions and consistent exhaust velocity.\u003c\/li\u003e\n\u003cli\u003ePrecision TIG Welding: Built to endure high exhaust temperatures and sustained boost pressure.\u003c\/li\u003e\n\u003cli\u003eDirect OEM Bolt-On Installation: Utilizes factory mounting points for straightforward installation.\u003c\/li\u003e\n\u003cli\u003eEngineered to Pair Seamlessly with Valvetronic Exhaust Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul style=\"margin:1em 0\"\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 boost\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Valvetronic Designs","offers":[{"title":"Default Title","offer_id":59183086207116,"sku":"BMW.F8X.M2C.M3.M4.FF.400C.BR","price":2249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0789\/3300\/0332\/files\/DSC08011_ShopifyCustomSize.jpg?v=1789532581","url":"https:\/\/vpmotorworks.com\/products\/bmw-f80-f82-f83-f87c-m2c-m3-m4-400-cell-catted-downpipes","provider":"VP Motorworks","version":"1.0","type":"link"}