{"product_id":"kyostar-racing-downpipe-exhaust-for-2019-bmw-f90-m5-f92-m8-fatboy-downpipe","title":"KYOSTAR 304 Stainless Steel Racing Downpipe for BMW F90 M5 F91 F92 F93 M8 S63 4.4T V8","description":"\u003ch5\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eKYOSTAR 304 Stainless Steel Racing Downpipe for BMW F90 M5 F91 F92 F93 M8 S63 4.4T V8\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003eUpgrade your BMW M performance platform with the KYOSTAR 304 Stainless Steel Racing Downpipe, designed specifically for BMW F90 M5 and F91\/F92\/F93 M8 models equipped with the S63 4.4T twin-turbo V8 engine. This high-flow downpipe improves exhaust gas flow by reducing factory exhaust restriction while delivering a more aggressive exhaust tone and supporting improved turbocharger efficiency.\u003c\/p\u003e\n\u003cp\u003eConstructed from durable 304 stainless steel, the KYOSTAR racing downpipe provides excellent heat resistance, corrosion protection, and long-term durability for high-performance applications. The optimized tubing design helps improve exhaust flow characteristics, making it an ideal upgrade for S63-powered BMW builds seeking enhanced sound, improved exhaust response, and increased performance potential.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-flow racing downpipe design helps reduce factory exhaust restriction and improve exhaust gas flow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e304 stainless steel construction provides excellent durability, corrosion resistance, and heat tolerance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOptimized exhaust routing supports improved turbocharger breathing and exhaust response.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned specifically for BMW S63 4.4T twin-turbo V8 M models.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProvides a more aggressive exhaust tone for performance-focused BMW enthusiasts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eBMW F90 M5 S63 4.4T Twin-Turbo V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBMW F91 M8 Convertible S63 4.4T Twin-Turbo V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBMW F92 M8 Coupe S63 4.4T Twin-Turbo V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBMW F93 M8 Gran Coupe S63 4.4T Twin-Turbo V8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBMW M5 Competition \/ M8 Competition models equipped with S63 engine\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003eCompatible engine: BMW S63 4.4T Twin-Turbo V8 engine applications only.\u003cbr\u003eIncompatible engine: Not compatible with N63, B58, B48, diesel engines, or non-M models.\u003cbr\u003eVerify chassis: Confirm BMW chassis code, engine code, and factory exhaust configuration before purchase.\u003cbr\u003eVerify connection: Check turbo outlet connections, exhaust routing, and existing modifications before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment Note:\u003c\/strong\u003e\u003cbr\u003eVehicle exhaust configurations may vary depending on production year, market specification, Competition package, and previous modifications. Please compare your factory downpipes, connection points, and exhaust layout with the product photos before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProfessional installation is recommended.\u003c\/strong\u003e Ensure all clamps, gaskets, exhaust connections, and mounting hardware are properly secured after installation.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e304 Stainless Steel Racing Downpipes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExhaust Clamps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMounting Hardware\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGaskets (if included)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eKYOSTAR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eKD5S009WG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel Racing Downpipe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eBMW F90 M5 \/ F91 F92 F93 M8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine\u003c\/td\u003e\n\u003ctd\u003eS63 4.4T Twin-Turbo V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eBMW S63 Turbo Exhaust Performance Upgrade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBenefits\u003c\/td\u003e\n\u003ctd\u003eImproved Exhaust Flow, Reduced Exhaust Restriction, Enhanced Exhaust Tone, Better Turbo Response\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003ePolished Stainless Steel Finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExhaust Type\u003c\/td\u003e\n\u003ctd\u003eHigh Flow Racing Downpipe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Type\u003c\/td\u003e\n\u003ctd\u003eDirect Bolt-On Exhaust Upgrade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Includes\u003c\/td\u003e\n\u003ctd\u003eDownpipes, Exhaust Clamps, Mounting Hardware, and Gaskets if Included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eBrand New\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What BMW models does this downpipe fit?\u003c\/strong\u003e\u003cbr\u003eA: This racing downpipe is designed for BMW F90 M5 and F91\/F92\/F93 M8 models equipped with the S63 4.4T twin-turbo V8 engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this compatible with BMW N63 engines?\u003c\/strong\u003e\u003cbr\u003eA: No. This downpipe is specifically designed for S63-powered BMW M models and is not compatible with N63 or other engine platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this improve exhaust sound?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The high-flow design reduces exhaust restriction and provides a more aggressive performance exhaust tone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does installation require ECU tuning?\u003c\/strong\u003e\u003cbr\u003eA: ECU tuning is not required for installation. However, tuning may help optimize performance when combined with additional engine modifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is professional installation recommended?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Professional installation is recommended to ensure proper alignment, sealing, and safe exhaust operation.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Ships from U.S. Warehouse","offer_id":53813806792977,"sku":"KD5S009WG-1","price":499.0,"currency_code":"USD","in_stock":false},{"title":"Factory Direct Shipping","offer_id":53813806825745,"sku":"KD5S009WG-2","price":489.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0919\/7361\/5889\/files\/KD5S009WG_1.jpg?v=1739003435","url":"https:\/\/www.kyostars.com\/de\/products\/kyostar-racing-downpipe-exhaust-for-2019-bmw-f90-m5-f92-m8-fatboy-downpipe","provider":"KYOSTAR PERFORMANCE","version":"1.0","type":"link"}