{"product_id":"vrsf-bmw-n54-135i-335i-rwd-catless-downpipes","title":"VRSF BMW N54 135i\/335i RWD Catless Downpipes","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThese 3in downpipes are the best bang-for-buck modification available for the N54, with genuine gains of 25-30hp and 30tq when tuned. By eliminating the restrictive catalytic converters in the factory downpipes entirely, backpressure is significantly reduced, resulting in faster turbo spool, a genuine increase in power, and a more aggressive exhaust note.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eRather than necking down closer to the turbos the way most competitor downpipes do, these feature a full 3in design right up to the 2.5in flange, allowing a genuine increase in flow. A CAD\/CAM-designed cast bell mouth provides a seamless flange-to-pipe transition, hand-made from mandrel-bent, TIG-welded 3in 304-grade stainless steel with smooth radius bends to decrease turbulence. Each kit includes heavy-duty Grade 12 bolts, nuts, and washers, along with two mid-pipe gaskets.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eWorks with:\u003c\/strong\u003e Both RHD and LHD models, no modification necessary. Optional turbo-to-downpipe clamp and gasket available separately, not required for installation but highly recommended if your original accessories have more than 50-60k miles.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e removal of emissions equipment means this part is intended for closed-course\/competition use, not for road use where emissions compliance is required.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eWhy Choose This Downpipe\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eGenuine 25-30hp\/30tq gain when tuned\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull 3in design up to the 2.5in flange, doesn't neck down near the turbos like many competitors\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFits both RHD and LHD models with no modification necessary\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCAD\/CAM-designed cast bell mouth for a seamless flange-to-pipe transition\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHand-made, mandrel-bent, TIG-welded 3in 304-grade stainless steel construction\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eGrade 12 mounting hardware and mid-pipe gaskets included\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOptional ceramic coating available, rated to 1800°F (1-year warranty on the coating specifically)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLifetime warranty plus \"No Hassle\" satisfaction guarantee on fitment and defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW E90\/E91\/E92\/E93 335i (N54, 2007-2010)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW E92 335is (N54, 2011-2013)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW E82\/E88 135i (N54, 2008-2010)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW E82\/E88 1M (N54, 2011-2012)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eFits both RHD and LHD.\u003c\/strong\u003e \u003c\/p\u003e","brand":"VRSF","offers":[{"title":"Default Title","offer_id":54462610800973,"sku":"VRS-DPS-N54-001","price":375.1,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/VRSF_BMW_N54_135i_335i_RWD_Catless_Downpipes.jpg?v=1786001659","url":"https:\/\/i6tuning.com\/products\/vrsf-bmw-n54-135i-335i-rwd-catless-downpipes","provider":"i6 Tuning","version":"1.0","type":"link"}