{"product_id":"kyostar-valved-sport-catback-exhaust-system-for-2018-2023-bmw-f90-m5-s63-4-4t-v8","title":"KYOSTAR Valved Sport Catback Exhaust System for 2018-2023 BMW F90 M5 S63 4.4T V8","description":"\u003ch5\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\n\u003cstrong\u003e\nKYOSTAR Valved Sport Catback Exhaust System for BMW F90 M5 S63 4.4T Twin-Turbo V8 Engine\n\u003c\/strong\u003e\n\u003c\/span\u003e\n\u003c\/h5\u003e\n\n\u003cp\u003e\nThe KYOSTAR Valved Sport Catback Exhaust System is designed for 2018-2023 BMW F90 M5 models equipped with the S63 4.4T twin-turbo V8 engine. Developed as a performance exhaust upgrade, this system improves exhaust flow efficiency, reduces factory exhaust restriction, and enhances the aggressive V8 exhaust character with adjustable sound control through an integrated valve system.\n\u003c\/p\u003e\n\n\u003cp\u003e\nManufactured from durable stainless steel with precision fabrication, the KYOSTAR valved catback exhaust system delivers improved exhaust performance, enhanced rear styling, and reliable operation under high-performance conditions. The 4-tip design complements the BMW M appearance while the valve-controlled system allows drivers to switch between a refined daily driving tone and a louder sport exhaust sound.\n\u003c\/p\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\nFeatures\n\u003c\/span\u003e\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\u003cp\u003e\nValved exhaust technology provides adjustable sound control for comfortable cruising and aggressive performance driving.\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\nStainless steel construction offers excellent heat resistance, corrosion protection, and long-term durability.\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\nOptimized catback exhaust design improves exhaust flow and reduces factory exhaust restrictions.\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\n4-tip performance exhaust styling enhances the rear appearance with a BMW M-inspired upgrade.\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\nDesigned specifically for BMW F90 M5 models equipped with the S63 4.4T twin-turbo V8 engine.\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\nFitment\n\u003c\/span\u003e\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\u003cp\u003e\n2018-2023 BMW F90 M5\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\nNotes\n\u003c\/span\u003e\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eCompatible Vehicle:\u003c\/strong\u003e Designed for BMW F90 M5 models equipped with the S63 4.4T twin-turbo V8 engine.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eIncompatible Vehicle:\u003c\/strong\u003e Not compatible with BMW G90\/G99 M5 S68 engine platforms or other non-F90 exhaust configurations.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eVerify Vehicle:\u003c\/strong\u003e Please confirm your vehicle Year, Chassis, Engine configuration, and factory exhaust system before ordering.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Professional installation is recommended to ensure correct exhaust alignment, valve operation, and proper sealing.\n\u003c\/p\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\nProduct Details\n\u003c\/span\u003e\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse;\" cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eKYOSTAR\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eNA-CB-5062-SS-WG_9\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eValved Sport Catback Exhaust System\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eVehicle Fitment\u003c\/td\u003e\n\u003ctd\u003e2018-2023 BMW F90 M5\u003c\/td\u003e\n\u003c\/tr\u003e\n\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\n\u003ctr\u003e\n\u003ctd\u003eChassis\u003c\/td\u003e\n\u003ctd\u003eF90\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eBMW M Performance Exhaust Upgrade\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eBenefits\u003c\/td\u003e\n\u003ctd\u003eImproved Exhaust Flow, Adjustable Exhaust Tone, Enhanced V8 Sound, Reduced Exhaust Restriction\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eNatural Stainless Steel Finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003ePipe Material\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eValve Type\u003c\/td\u003e\n\u003ctd\u003eValved Exhaust System\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eExhaust Type\u003c\/td\u003e\n\u003ctd\u003eCatback Exhaust System\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eTip Style\u003c\/td\u003e\n\u003ctd\u003e4-Tip Performance Design\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eBolt-On Installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003ePackage Includes\u003c\/td\u003e\n\u003ctd\u003eComplete Catback Exhaust System, Valve Components, Installation Hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eBrand New\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\n\u003c\/table\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\nFAQ\n\u003c\/span\u003e\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\nQ1: Will this fit my vehicle?\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003cp\u003e\nThe KYOSTAR Valved Sport Catback Exhaust System is designed for 2018-2023 BMW F90 M5 models equipped with the S63 4.4T twin-turbo V8 engine. Please confirm your vehicle Year, Chassis, and Engine before purchase.\n\u003c\/p\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\nQ2: Does installation require modification?\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003cp\u003e\nThis catback exhaust system is designed for direct installation using factory-style mounting locations. Professional installation is recommended to ensure proper fitment and valve operation.\n\u003c\/p\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\nQ3: Does this require ECU tuning?\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003cp\u003e\nNo ECU tuning is required for this catback exhaust upgrade. Since the system is installed after the catalytic converter, it typically does not affect engine calibration or require additional tuning.\n\u003c\/p\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\nQ4: What performance benefits does this provide?\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003cp\u003e\nThe KYOSTAR valved catback exhaust improves exhaust flow, enhances S63 V8 sound, provides adjustable exhaust volume control, and delivers a more engaging performance driving experience for BMW M5 applications.\n\u003c\/p\u003e\n\n\u003cp\u003e\nProfessional installation is recommended.\n\u003c\/p\u003e\n\n\u003cp\u003e\nKYOSTAR products are quality inspected before shipment. Please contact our support team for installation assistance or after-sales support.\n\u003c\/p\u003e","brand":"KYOSTAR","offers":[{"title":"Ships from U.S. Warehouse","offer_id":53804300239121,"sku":"NA-CB-5062-SS-WG_9","price":1499.0,"currency_code":"USD","in_stock":false},{"title":"Factory Direct Shipping","offer_id":53804300271889,"sku":"NA-CB-5062-SS-WG_9","price":1479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0919\/7361\/5889\/files\/NA-CB-5062-SS-WG_9.jpg?v=1784794877","url":"https:\/\/www.kyostars.com\/de\/products\/kyostar-valved-sport-catback-exhaust-system-for-2018-2023-bmw-f90-m5-s63-4-4t-v8","provider":"KYOSTAR PERFORMANCE","version":"1.0","type":"link"}