{"product_id":"ultimate-racing-bmw-n54-e82-e88-e90-e92-metal-substrate-high-flow-catted-downpipes-rhd-135i-335i","title":"Ultimate Racing BMW N54 RHD High-Flow Catted Downpipes - 200 Cell Metal Substrate Sports Cats, 304 Stainless, Bolt-On - E82 E88 E90 E91 E92 E93 135i\/335i - TIG Welded - Part 600031R","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \n  \u003ch2\u003eUltimate Racing RHD N54 Sport Cat Front Pipes for E Chassis 135i and 335i - Part 600031R\u003c\/h2\u003e\n  \n  \u003cp\u003eGive your twin turbo straight six the flow it deserves. These right hand drive sport catalytic turbo outlet pipes deliver a serious performance uplift on BMW E-series 135i and 335i models with the N54 engine. Built from full 304 stainless with precise hand TIG welding and OEM sensor provisions, they are a true plug-and-play upgrade that sharpens response, improves spool and releases extra power without compromise. Part number 600031R.\u003c\/p\u003e\n  \n  \u003ch3\u003eWhy enthusiasts choose this upgrade\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eReal gains you can feel - independent testing on a stock car showed over 20 whp increase with the 200 CPSI metal substrate cats\u003c\/li\u003e\n    \u003cli\u003eSports catalytic converters for high flow and strong midrange while keeping sensors in the correct locations\u003c\/li\u003e\n    \u003cli\u003eDirect fitment to factory V-band connections - no cutting or fabrication required\u003c\/li\u003e\n    \u003cli\u003eDurable 304 stainless construction with smooth, precision welds for long service life\u003c\/li\u003e\n    \u003cli\u003ePlug-and-play with OEM oxygen sensors - designed for a clean, trouble-free install\u003c\/li\u003e\n    \u003cli\u003eNo map change required\u003c\/li\u003e\n    \u003cli\u003eDesigned and manufactured in North America\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eProven performance\u003c\/h3\u003e\n  \u003cp\u003eBack-to-back dyno figures on an Ultimate Racing 335i N54, untuned:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eCompletely stock - 273.30 whp \/ 272.95 ft.lbs\u003c\/li\u003e\n    \u003cli\u003eWith Ultimate Racing 200 CPSI sport cat front pipes - 295.47 whp \/ 294.49 ft.lbs\u003c\/li\u003e\n    \u003cli\u003eFor reference, Ultimate Racing catless version - 301.18 whp \/ 297.98 ft.lbs\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eKey details\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eMaterial - full 304 stainless steel\u003c\/li\u003e\n    \u003cli\u003eCatalysts - 200 cell metal substrate high-flow sports cats\u003c\/li\u003e\n    \u003cli\u003eFitment - 100 percent bolt on, V-band turbo side\u003c\/li\u003e\n    \u003cli\u003eO2 bungs - factory positions retained\u003c\/li\u003e\n    \u003cli\u003eWelding - high quality TIG\u003c\/li\u003e\n    \u003cli\u003eTuning - not required\u003c\/li\u003e\n    \u003cli\u003eTypical gain - 20 plus wheel horsepower on a stock vehicle\u003c\/li\u003e\n    \u003cli\u003ePart number - 600031R\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eVehicle compatibility - right hand drive N54\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW 1 Series E82 and E88 135i N54 - 2006 to 2011 - RHD\u003c\/li\u003e\n    \u003cli\u003eBMW 3 Series E90 E91 E92 E93 335i N54 - 2005 to 2013 - RHD\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Suits rear wheel drive models only. Not suitable for XI or xDrive all wheel drive variants.\u003c\/p\u003e\n  \n  \u003ch3\u003eFitting components required\u003c\/h3\u003e\n  \u003cp\u003eTo complete installation you will need the following factory parts:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e2x Genuine BMW N54 N55 N63 S63 V-band exhaust clamp - includes 1M, M2, 335i and Z4 35is\u003c\/li\u003e\n    \u003cli\u003e2x Genuine BMW N13 N54 N55 S55 turbo outlet gasket - turbo side - includes 1M, M2 Competition, M3, M4, M135i, 135i, 335i and Hybrid 3\u003c\/li\u003e\n    \u003cli\u003e1x Genuine BMW N54 N55 E60 E88 E90 downpipe gasket kit - includes 1M, 135i, 335i and 535xi\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eProfessional fitting\u003c\/h3\u003e\n  \u003cp\u003eNeed it installed properly first time We can help. MJ Modifications offers expert fitting at our Warwickshire workshop. Request a quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\u003c\/p\u003e\n  \n  \u003ch3\u003ePre-dispatch compatibility check\u003c\/h3\u003e\n  \u003cp\u003eFor peace of mind, we confirm fitment before shipping. Add your UK registration or the last 7 of your VIN at checkout and we will verify compatibility.\u003c\/p\u003e\n  \n  \u003ch3\u003eManufacturer\u003c\/h3\u003e\n  \u003cp\u003eUltimate Racing\u003c\/p\u003e\n  \n  \u003ch3\u003eFeedback from our customers\u003c\/h3\u003e\n  \u003cp\u003eWe have fitted these Ultimate Racing sport cat turbo outlet pipes to multiple customer 135i and 335i vehicles, and the response has been consistently positive regarding build quality, fitment and the noticeable performance bump. A trusted RHD solution for E82, E88, E90, E91, E92 and E93 N54 owners seeking a premium 200 CPSI sports cat upgrade.\u003c\/p\u003e\n  \n  \u003cp style=\"font-size: 0.95em; color: #444;\"\u003e\n    Popular searches: BMW 135i sport cat, BMW 335i high flow cats, N54 turbo outlet pipes RHD, E82 E88 E90 E91 E92 E93 exhaust upgrade, BMW N54 200 CPSI cats, stainless turbo front pipes, plug and play BMW N54 front section, right hand drive BMW performance exhaust UK, E chassis 135i 335i sport catalytic converters, RHD BMW N54 flow upgrade.\n  \u003c\/p\u003e\n  \n\u003c\/div\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":56008702886274,"sku":null,"price":1380.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/335xi-Catted-DP_A.webp?v=1764090995","url":"https:\/\/mjmodifications.co.uk\/products\/ultimate-racing-bmw-n54-e82-e88-e90-e92-metal-substrate-high-flow-catted-downpipes-rhd-135i-335i","provider":"MJ Modifications","version":"1.0","type":"link"}