{"product_id":"bmw-m3-m4-f80-f82-f83-non-valved-straight-through-catback-exhaust","title":"BMW M3\/M4 F80\/F82\/F83 3.0T Non-Valved Straight-Through Catback Exhaust System","description":"\u003ch2\u003eUnrestricted Performance \u0026amp; Raw Motorsport Sound — CEES BMW M3\/M4 F80\/F82\/F83 Non-Valved Straight-Through Catback Exhaust System\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/7539\/7747\/files\/bc62bd0477e76689233b886adda2ce5e.jpg?v=1775321388\" alt=\"BMW F80 F82 F83 Non-Valved Straight-Through Catback Exhaust System\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/7539\/7747\/files\/TIPS.webp?v=1762582937\" alt=\"CEES Exhaust Tips for BMW F80 F82 F83\"\u003e\u003c\/p\u003e\n\u003cp\u003eEngineered specifically for the \u003cb\u003e2015–2019 BMW M3 F80 Sedan and BMW M4 F82 Coupe \/ F83 Convertible 3.0T S55 platform\u003c\/b\u003e, the CEES Non-Valved Straight-Through Catback Exhaust System is built for track enthusiasts and drivers seeking an uncompromising, raw exhaust experience. By eliminating internal valve restrictions and muffling chambers, this straight-through catback delivers maximum exhaust gas velocity, substantial weight savings, and an aggressive, pure inline-six twin-turbo acoustic profile.\u003c\/p\u003e\n\u003ch3\u003e🚀 Engineering Highlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eNon-Valved Straight-Through Architecture:\u003c\/b\u003e Completely eliminates exhaust valves and restriction points for unobstructed airflow and minimal backpressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePure Motorsport Sound:\u003c\/b\u003e Delivers a deep, aggressive, high-decibel exhaust note with crisp overrun burbles and pure S55 engine acoustics under full throttle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLightweight Construction:\u003c\/b\u003e Optimized structure sheds significant weight compared to the bulky factory catback system, improving vehicle balance and response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrecision TIG Welding:\u003c\/b\u003e Handcrafted with smooth, precision TIG welds and mandrel-bent piping to endure extreme track and high-heat conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDirect Bolt-On Fitment:\u003c\/b\u003e 3D-scanned and engineered to align directly with factory chassis mounting points and compatible midpipe connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e📊 Technical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eFitment\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e2015–2019 BMW M3 F80 Sedan \/ BMW M4 F82 Coupe \u0026amp; F83 Convertible (3.0T Twin-Turbo S55)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eSystem Type\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-Valved Straight-Through Catback Exhaust System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eValve Configuration\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-Valved (Straight-Through unrestricted design)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eMaterial\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eT304 stainless steel\/GRADE 5 TITANIUM\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eInstallation\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect bolt-on fitment; professional installation recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003ePlace of Origin\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eGuangdong, China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eWarranty\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e1-Year Limited Warranty against material and craftsmanship defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003cp\u003e\u003ca style=\"display: inline-block; background-color: #25d366; color: #ffffff; padding: 12px 24px; border-radius: 6px; text-decoration: none; font-weight: bold; font-size: 16px;\" rel=\"noopener noreferrer\" href=\"https:\/\/wa.me\/8615626172519\" target=\"_blank\"\u003e✨ Customize Your M Build — Chat with Our Specialists on WhatsApp\u003c\/a\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eWhatsApp:\u003c\/b\u003e +86 15626172519\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEmail:\u003c\/b\u003e cees-exhaust@qq.com\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e📦 Shipping \u0026amp; Lead Times\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e🛠️ Production Time:\u003c\/b\u003e Built to order in \u003cb\u003e2–4 weeks\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e🚚 Shipping:\u003c\/b\u003e Express air freight via DHL \/ FedEx \/ UPS — estimated \u003cb\u003e7–15 business days\u003c\/b\u003e door-to-door\u003c\/li\u003e\n\u003cli\u003e📦 \u003cstrong\u003eFree shipping\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eFAQ\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003e1. Which BMW models does this straight-through catback fit?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis system is designed specifically for the 2015–2019 BMW M3 F80 Sedan and BMW M4 F82 Coupe \/ F83 Convertible equipped with the 3.0T S55 twin-turbo inline-six engine. Please confirm your exact model year, body style, and existing midpipe setup prior to ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e2. How does a non-valved exhaust differ from a valved system?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA non-valved exhaust does not feature electronic or vacuum valves to quiet down the exhaust tone. It provides an uninterrupted, straight-through flow path at all times, making it noticeably louder, lighter, and more aggressive than a valved catback.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e3. Will installing this catback trigger a Check Engine Light (CEL)?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eBecause a catback exhaust is installed behind the vehicle's primary catalytic converters and O2 sensors, it typically does not trigger a CEL by itself. However, overall emissions behavior and sound levels will depend on whether aftermarket downpipes are installed.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e4. Are you a direct manufacturer?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eYes. CEES Exhaust is a direct performance exhaust manufacturer. Each exhaust system is custom fabricated to stringent tolerances, ensuring seamless fitment and premium finish directly from our factory.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0582\/7539\/7747\/files\/e8d359b7ce873530e19a12cff70af115.jpg?v=1783407649\" alt=\"CEES Exhaust Direct Manufacturer Guangdong\"\u003e\u003c\/p\u003e","brand":"ceesexhaust","offers":[{"title":"SS304 Catback","offer_id":48376733073523,"sku":"CEES-BMW-F8X-CB-SS","price":1250.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Catback","offer_id":48376733106291,"sku":"CEES-BMW-F8X-CB-TI","price":1750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0582\/7539\/7747\/files\/bmw_F80_exhaust_pipe_bbfe226d-1eb3-4bfa-9e27-29d0a374daf5.jpg?v=1789807268","url":"https:\/\/cees-exhaust.com\/gl\/products\/bmw-m3-m4-f80-f82-f83-non-valved-straight-through-catback-exhaust","provider":"ceesexhaust","version":"1.0","type":"link"}