{"product_id":"cobra-sport-de-cat-downpipe-performance-exhaust-bmw-340i-f30-lci-f31-lci-2017-19","title":"F30 F31 340i B58 catless downpipe 3.5in - stage 2, track day, fast road (Cobra Sport CS-DP-B58-35)","description":"\u003cp\u003eDirect-fit catless downpipe for F30 and F31 340i with B58 engine - no spacers, no flange mods, no compromises. Built for stage 2 tuning, track day use or fast-road aggression where flow and response matter more than emissions compliance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact fit\u003c\/strong\u003e: Designed for B58-powered F30\/F31 340i (2017-2019 LCI), not N55 or G20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5in (88.9mm) mandrel-bent stainless\u003c\/strong\u003e: Larger than stock to reduce backpressure, improve spool and support higher boost\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatless design\u003c\/strong\u003e: Removes the restrictive factory catalytic converter - required for decat mapping, not for MOT or daily driver use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes gaskets and hardware\u003c\/strong\u003e: OEM-style V-band clamp, turbo outlet gasket, and flange gasket - no sourcing extras\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSearch terms this matches\u003c\/strong\u003e: B58 decat downpipe, F30 340i stage 2 exhaust, F31 340i catless downpipe, B58 fast road downpipe, F30 track day exhaust, Cobra Sport CS-DP-B58-35\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cobra","offers":[{"title":"Default Title","offer_id":54384943399255,"sku":"BM51","price":518.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1038\/4575\/7271\/files\/cobra-sport-de-cat-downpipe-performance-exhaust-bmw-340i-f30-lcif31-lci-2017-19-335002.jpg?v=1787158466","url":"https:\/\/cuzracecars.com\/products\/cobra-sport-de-cat-downpipe-performance-exhaust-bmw-340i-f30-lci-f31-lci-2017-19","provider":"Cuz Race Cars","version":"1.0","type":"link"}