{"product_id":"2011-2012-single-turbo-downpipe-exhaust-for-11-12-bmw-135i-e82-e88-e90-e92-n55-b30","title":"Single Turbo Downpipe Exhaust For 2011-2012 BMW 135i E82 E88 E90 E92 N55 B30","description":"\u003cdiv class=\"xkv-product-description\"\u003e\n\n  \u003cp\u003e\n    This single turbo downpipe exhaust is designed for page-listed 2011–2012 BMW N55 3.0L applications, including BMW 135i E82 \/ E88 and BMW 335i E90 \/ E91 \/ E92 \/ E93 models shown in the fitment table below. It is intended as a racing \/ de-catalyzed downpipe component for compatible BMW N55 single-turbo exhaust layouts.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Built from T304 stainless steel with mandrel-bent tubing, CNC-machined flanges, TIG\/MIG welded construction, and a de-catalyzed downpipe layout as listed, this downpipe is designed to support a freer exhaust path where compatible. Final fitment, sound, exhaust sealing, turbo response, drivability, and performance results may vary depending on vehicle condition, chassis, turbo setup, O2 sensor configuration, installation quality, tuning or calibration, emissions setup, and supporting exhaust components.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eProduct Overview\u003c\/h3\u003e\n  \u003cp\u003e\n    This product is a single turbo racing downpipe for compatible BMW N55 3.0L applications. It is not a header set, catback exhaust system, full turbo-back exhaust, catalytic converter, twin-turbo N54 downpipe set, or universal pipe kit. Please verify your exact model year, chassis, N55 engine, turbo setup, O2 sensor layout, flange connection, downstream exhaust connection, and emissions requirements before purchase.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Details\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Page-listed 2011–2012 BMW 135i and 335i N55 applications\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e BMW N55 B30 3.0L single-turbo engine as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Single Turbo Racing Downpipe Exhaust\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e De-catalyzed \/ racing downpipe design as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e T304 stainless steel as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e CNC-machined flanges with TIG\/MIG welded construction as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePipe Design:\u003c\/strong\u003e Mandrel-bent tubing as listed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Designed for compatible BMW N55 turbo outlet and downstream exhaust connection where fitment matches\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Professional installation highly recommended\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstruction:\u003c\/strong\u003e No installation instructions included unless otherwise stated on the product page\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUse Case:\u003c\/strong\u003e Off-road, racing, or closed-course use where emissions laws apply\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFitment\u003c\/h3\u003e\n  \u003cp\u003e\n    Please use the table below to quickly confirm the main vehicle applications currently listed for this BMW N55 downpipe. Before ordering, verify your exact chassis, engine, turbo setup, O2 sensor layout, flange connection, downstream exhaust layout, and emissions setup.\n  \u003c\/p\u003e\n\n  \u003cdiv class=\"xkv-fitment-table-wrap\"\u003e\n    \u003ctable class=\"xkv-fitment-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eVehicle Name\u003c\/th\u003e\n          \u003cth\u003eYear\u003c\/th\u003e\n          \u003cth\u003eEngine\u003c\/th\u003e\n          \u003cth\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eBMW 135i E82 \/ E88\u003c\/td\u003e\n          \u003ctd\u003e2011–2012\u003c\/td\u003e\n          \u003ctd\u003eN55 3.0L Single Turbo\u003c\/td\u003e\n          \u003ctd\u003eVerify chassis, turbo outlet connection, O2 sensor layout, and downstream exhaust connection\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eBMW 335i E90 \/ E91 \/ E92 \/ E93\u003c\/td\u003e\n          \u003ctd\u003e2011–2012\u003c\/td\u003e\n          \u003ctd\u003eN55 3.0L Single Turbo\u003c\/td\u003e\n          \u003ctd\u003eVerify exact chassis, N55 engine, flange connection, O2 sensor layout, and exhaust setup\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"xkv-fitment-note\"\u003e\n    \u003cstrong\u003eFitment Note:\u003c\/strong\u003e This table is based on the fitment information currently listed for this product. This downpipe is intended for page-listed BMW N55 single-turbo applications only. It is not listed as an N54 twin-turbo downpipe set. Please verify your exact model year, chassis, N55 engine, turbo setup, O2 sensor layout, flange connection, downstream exhaust layout, and emissions setup before purchase.\n  \u003c\/div\u003e\n\n  \u003ch3\u003ePackage Includes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eSingle turbo downpipe component as shown\u003c\/li\u003e\n    \u003cli\u003eFlange \/ welded connection sections as shown or listed\u003c\/li\u003e\n    \u003cli\u003eGaskets, clamps, hardware, bolts, or additional accessories included only if shown or listed\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    Please review the product photos and listing details before installation. Confirm all included downpipe components, flanges, gaskets, clamps, fasteners, and O2 sensor provisions against the received package before beginning installation.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eProfessional installation is highly recommended.\u003c\/li\u003e\n    \u003cli\u003eNo installation instructions are included unless otherwise stated on the product page.\u003c\/li\u003e\n    \u003cli\u003eTest fit the downpipe before final tightening.\u003c\/li\u003e\n    \u003cli\u003eVerify turbo outlet connection, flange alignment, O2 sensor position, and downstream exhaust connection before installation.\u003c\/li\u003e\n    \u003cli\u003eCheck clearance around the turbocharger area, firewall, transmission area, heat shields, underbody, wiring, O2 sensor harnesses, and surrounding exhaust components.\u003c\/li\u003e\n    \u003cli\u003eOld, rusted, or seized factory hardware may increase installation difficulty.\u003c\/li\u003e\n    \u003cli\u003eCatless \/ de-catalyzed downpipe installation may require compatible tuning, calibration, or sensor-related solutions depending on vehicle setup.\u003c\/li\u003e\n    \u003cli\u003eInspect all exhaust connections for leaks after installation and recheck clamps \/ fasteners after initial heat cycles where appropriate.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eBefore You Buy\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eThis product is intended for page-listed 2011–2012 BMW 135i and 335i N55 single-turbo applications only.\u003c\/li\u003e\n    \u003cli\u003eThis is a single turbo racing downpipe, not a header set, catback exhaust system, full turbo-back exhaust, catalytic converter, N54 twin-turbo downpipe set, or universal pipe kit.\u003c\/li\u003e\n    \u003cli\u003ePlease verify your exact model year, chassis, N55 engine, turbo setup, O2 sensor layout, flange connection, downstream exhaust connection, and emissions setup before purchase.\u003c\/li\u003e\n    \u003cli\u003eThis product uses a de-catalyzed \/ racing downpipe design as listed and may alter or remove emissions-related exhaust components depending on the vehicle setup.\u003c\/li\u003e\n    \u003cli\u003eCompatible tuning, calibration, or sensor-related solutions may be required depending on O2 sensor configuration and ECU setup.\u003c\/li\u003e\n    \u003cli\u003eThis product is intended for off-road, racing, or closed-course use where emissions laws apply.\u003c\/li\u003e\n    \u003cli\u003eThis product is not represented as street legal, emissions-compliant, CARB-compliant, or legal for public road use unless explicitly stated.\u003c\/li\u003e\n    \u003cli\u003ePerformance gains, sound changes, exhaust flow changes, turbo response, fitment, and drivability results are not guaranteed and may vary by setup.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n  .xkv-product-description {\n    font-family: 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