{"title":"Performance Downpipes","description":"\u003cp\u003ePerformance and track-use downpipes for supported turbocharged applications. Verify local laws and intended use before ordering.\u003c\/p\u003e","products":[{"product_id":"bmw-f10-f11-n55-3-5-race-downpipe-535i-535ix","title":"BMW F10\/F11 535i N55 3.5\" Race Downpipe","description":"\u003cp\u003eUpgrade the N55 F10\/F11 5 Series with a 3.5\" stainless race downpipe built for better exhaust flow, faster turbo response, and a more aggressive tone when paired with proper calibration. This is a clean hardware option for customers building a tuned N55 street\/track setup without paying premium-brand pricing.\u003c\/p\u003e\n\n\u003ch3\u003eFits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2010-2014 BMW 535i F10 N55 3.0L single turbo\u003c\/li\u003e\n  \u003cli\u003e2010-2014 BMW 535xi \/ 535i xDrive F10 N55 3.0L single turbo\u003c\/li\u003e\n  \u003cli\u003eBMW 535i \/ 535ix F11 N55 applications where factory downpipe flange and routing match\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment Note:\u003c\/strong\u003e Supplier listing references F10 and F11 535i \/ 535ix N55 fitment. Verify chassis, production date, wastegate style, flange connection, oxygen sensor locations, and exhaust connection before fulfillment or installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e3.5\" stainless steel N55 race downpipe\u003c\/li\u003e\n  \u003cli\u003eIntegrated flex section\u003c\/li\u003e\n  \u003cli\u003eOxygen sensor bungs\u003c\/li\u003e\n  \u003cli\u003eMounting bracket as shown\/supplied\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Upgrade\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces restriction compared to factory downpipe hardware\u003c\/li\u003e\n  \u003cli\u003eSupports Stage 2 ECU calibration setups\u003c\/li\u003e\n  \u003cli\u003eImproves turbo response and exhaust flow\u003c\/li\u003e\n  \u003cli\u003eRecommended for tuned N55 builds looking for more power headroom\u003c\/li\u003e\n  \u003cli\u003eBudget-friendly alternative to premium branded race downpipes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRecommended Supporting Mods\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eStage 2 ECU calibration\u003c\/li\u003e\n  \u003cli\u003eFresh spark plugs properly gapped for tuned boost levels\u003c\/li\u003e\n  \u003cli\u003eHigh-quality fuel matching the tune\u003c\/li\u003e\n  \u003cli\u003eCharge pipe upgrade if the factory plastic pipe is still installed\u003c\/li\u003e\n  \u003cli\u003eInspection of turbo, boost control, PCV, and exhaust hardware before install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstall Notes\u003c\/h3\u003e\n\u003cp\u003eProfessional installation is recommended. Additional clamps, gaskets, hardware, oxygen sensor extensions, or exhaust adjustment may be required depending on the exact vehicle and previous modifications. Always check for exhaust leaks and verify sensor operation after installation.\u003c\/p\u003e\n\n\u003ch3\u003eLegal \/ Off-Road Use\u003c\/h3\u003e\n\u003cp\u003eThis product may alter or remove emissions-related components depending on final configuration. It is intended for off-road, closed-course, or motorsport use only where applicable. It is the customer’s responsibility to confirm local laws and vehicle compliance before purchase or installation.\u003c\/p\u003e","brand":"Undisputed","offers":[{"title":"Silver","offer_id":53756527509803,"sku":"UD-N55-F10-DP-35-SLV","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/8574\/4427\/files\/image_2026-06-13_124514213.png?v=1781369116"},{"product_id":"bmw-e70-x5-m57n2-35d-stainless-downpipe-only","title":"BMW E70 X5 35d M57N2 Stainless Steel Downpipe — Downpipe Only","description":"\u003ch2\u003eBMW E70 X5 35d M57N2 Stainless Steel Downpipe — Downpipe Only\u003c\/h2\u003e\n\u003cp\u003eA stainless steel performance downpipe for BMW E70 X5 diesel builds using the M57N2 engine. This listing is for the \u003cstrong\u003edownpipe only\u003c\/strong\u003e; it does not include a mid-pipe section.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2007-2013 BMW X5 E70 with M57N2 diesel engine\u003c\/li\u003e\n\u003cli\u003eBMW X5 3.0sd \/ 35d \/ 286 hp\u003c\/li\u003e\n\u003cli\u003eFor M57N2 only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Please verify your vehicle, engine, turbo connection, and existing exhaust layout before ordering. This listing is intended for M57N2-equipped E70 X5 diesel models only.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Pairing:\u003c\/strong\u003e\u003cbr\u003eFor best results, this downpipe should be paired with a proper diesel ECU calibration. After installation, the engine software must be adjusted to account for the increased exhaust flow and off-road hardware configuration.\u003cstrong\u003e \u003cspan style=\"color: rgb(230, 230, 230);\"\u003ePairing this downpipe with an Undisputed diesel tune helps optimize boost control, fueling, torque delivery, and drivability while reducing the chance of warning lights or limp-mode issues.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eT201 \/ SS201 stainless steel construction\u003c\/li\u003e\n\u003cli\u003e1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003eMandrel-bent tubing for smoother exhaust flow\u003c\/li\u003e\n\u003cli\u003eTIG-welded for strength and durability\u003c\/li\u003e\n\u003cli\u003eBuilt-in flex section to reduce exhaust strain\u003c\/li\u003e\n\u003cli\u003e3\" downpipe design to support improved exhaust flow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConnection Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTurbo side: 3.5\" I.D. \/ 4.3\" O.D. V-band flange connection\u003c\/li\u003e\n\u003cli\u003eOutlet side: 2.6\" I.D. \/ 2.7\" O.D. pipe\u003c\/li\u003e\n\u003cli\u003eIncludes 3 O2 sensor bungs\u003c\/li\u003e\n\u003cli\u003eOEM turbo clamp is required for installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDownpipe only:\u003c\/strong\u003e this is not a full downpipe + mid-pipe kit\u003c\/li\u003e\n\u003cli\u003eEngine software must be adjusted accordingly after installation\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended\u003c\/li\u003e\n\u003cli\u003eHardware, gaskets, clamps, and sensors should be inspected during installation and replaced if needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOff-Road \/ Motorsport Use Only\u003c\/h3\u003e\n\u003cp\u003eThis product is intended for off-road, track, and motorsport use only. It may not be legal for use on public roads or emissions-controlled vehicles. Customer is responsible for confirming legality, compatibility, and required calibration before purchase or installation.\u003c\/p\u003e","brand":"Undisputed","offers":[{"title":"E70 M57N2 Downpipe Only","offer_id":53775980364075,"sku":"UD-BMW-E70-M57N2-35D-DP-ONLY","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0998\/8574\/4427\/files\/S3168d09c9b07439e92d5907e1dfd1a0fW_jpg_960x960q75_jpg.avif?v=1781719842"}],"url":"https:\/\/undisputedracing.com\/collections\/performance-downpipes.oembed","provider":"Undisputed Racing","version":"1.0","type":"link"}