{"product_id":"kyostar-valved-sport-catback-exhaust-system-for-2019-2025-bmw-g20-g21-m340i-g22-g23-m440i-b58-3-0t","title":"KYOSTAR Valved Sport Catback Exhaust System for 2019-2025 BMW G20 G21 M340i G22 G23 M440i B58 3.0T","description":"\u003ch5\u003e\n\u003cstrong\u003e\nKYOSTAR Valved Sport Catback Exhaust System for 2019-2025 BMW G20 G21 M340i G22 G23 M440i B58 3.0T\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003cp\u003e\nThe KYOSTAR Valved Sport Catback Exhaust System is designed for BMW G20\/G21 M340i and G22\/G23 M440i models equipped with the B58 3.0T Twin Turbo engine. This complete catback exhaust upgrade improves exhaust flow efficiency, reduces exhaust restriction, and enhances the turbocharged exhaust character while maintaining adjustable sound control through an integrated valve system.\n\u003c\/p\u003e\n\n\u003cp\u003e\nConstructed from high-quality stainless steel with precision fabrication, this valved catback system delivers excellent durability, improved exhaust pulse flow, and a more aggressive exhaust tone. The electronically controlled valve design allows drivers to switch between a refined daily driving sound and a louder sport exhaust experience, making it suitable for both street and performance applications.\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\nPerformance Benefit: Improves exhaust flow and reduces backpressure, helping the B58 turbocharged engine achieve improved response and exhaust efficiency.\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\nMaterial Advantage: Manufactured from durable stainless steel for excellent corrosion resistance, heat protection, and long-term reliability under performance driving conditions.\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\nInstallation Advantage: Designed as a direct-fit catback system using factory mounting locations for easier installation and proper alignment.\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\nDesign Advantage: Valved exhaust technology provides adjustable exhaust tone control, allowing quiet cruising and aggressive performance sound when desired.\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\nCompatibility Advantage: Specifically engineered for BMW G20\/G21 M340i and G22\/G23 M440i models equipped with the B58 3.0T 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\n2019-2025 BMW G20 M340i B58 3.0T\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\n2021-2025 BMW G21 M340i Touring B58 3.0T\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\n2021-2025 BMW G22 M440i Coupe B58 3.0T\n\u003c\/p\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cp\u003e\n2021-2025 BMW G23 M440i Convertible B58 3.0T\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 specifically for BMW G20\/G21 M340i and G22\/G23 M440i models equipped with the B58 Gen2 3.0T Twin Turbo engine.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eIncompatible Vehicle:\u003c\/strong\u003e Not compatible with BMW models using different chassis platforms, engine configurations, or exhaust layouts.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eVerify Vehicle:\u003c\/strong\u003e Please confirm your vehicle Year, Chassis Code, 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 of all connections.\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\u003eKD5S028PD\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\u003eBMW G20 G21 M340i \/ G22 G23 M440i\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eEngine\u003c\/td\u003e\n\u003ctd\u003eGen2 B58TU 3.0T Twin Turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eChassis\u003c\/td\u003e\n\u003ctd\u003eG20 \/ G21 \/ G22 \/ G23\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eBMW M Performance Vehicles 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, Reduced Restriction\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003ePipe Diameter\u003c\/td\u003e\n\u003ctd\u003ePerformance Diameter Design\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\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 fits BMW G20\/G21 M340i and G22\/G23 M440i models equipped with the Gen2 B58TU 3.0T 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 exhaust system is designed for direct installation using factory mounting points. Professional installation is recommended for proper fitment, valve operation, and exhaust alignment.\n\u003c\/p\u003e\n\n\u003ch5\u003e\n\u003cstrong\u003e\nQ3: Will this require ECU tuning?\n\u003c\/strong\u003e\n\u003c\/h5\u003e\n\n\u003cp\u003e\nA catback exhaust system is installed after the catalytic converter and typically does not affect engine warning lights or ECU calibration. Exhaust sound and performance characteristics may vary depending on other vehicle modifications.\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 turbocharged engine sound, provides adjustable exhaust volume control, and delivers a more engaging driving experience for BMW B58 performance 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":53803820843281,"sku":"KD5S028PD-1","price":1319.99,"currency_code":"USD","in_stock":false},{"title":"Factory Direct Shipping","offer_id":53803820876049,"sku":"KD5S028PD-2","price":1299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0919\/7361\/5889\/files\/KD5S028PD_10.jpg?v=1784789547","url":"https:\/\/www.kyostars.com\/de\/products\/kyostar-valved-sport-catback-exhaust-system-for-2019-2025-bmw-g20-g21-m340i-g22-g23-m440i-b58-3-0t","provider":"KYOSTAR PERFORMANCE","version":"1.0","type":"link"}