{"product_id":"aston-martin-dbx-4-0t-catback-sus304-valved-sport-exhaust-system","title":"Aston Martin DBX 4.0T catback sus304 Valved Sport Exhaust System","description":"\u003carticle class=\"4ever-article\"\u003e\n\u003carticle class=\"4ever-article\"\u003e\n\u003ch3\u003e\u003cspan\u003eProduct Overview\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eBrand: HMD\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cspan\u003eFitment: \u003c\/span\u003e\u003cspan\u003eAston Martin DBX 4.0T\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eProduct Type: Variable-Valve Exhaust System (Catback)\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eProduct Name: Racing-Grade Catback Performance Exhaust\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eVehicle Fitment: After placing your order, please send your vehicle details to customer service.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eModel Years: Please confirm the exact model year before ordering.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eMaterial: 304 Stainless Steel\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eSurface Finish: Polished \/ Brushed \/ Sandblasted Stainless Steel (depending on version)\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eValve Control: This system comes standard with a precision bracket designed to accommodate your vehicle's original OEM valve motor. No aftermarket remote control is needed — the valve operates directly through your car's factory ECU logic, automatically opening and closing based on RPM, throttle position, and drive mode.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eWelding Method: TIG Hand-Welded\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eInstallation Type: Direct OEM replacement — plug-and-play, no cutting, no welding required.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003ePerformance Improvement: Optimized exhaust flow with reduced backpressure\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eModification Results: Enhanced turbo response and improved exhaust efficiency\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eInstallation Note: Professional installation is strongly recommended.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eLogo Customization: Free laser logo engraving available\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eWarranty: 2 Years\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003ePlace of Origin: Made in China\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eContact (WeChat \/ WhatsApp \/ Kakao Talk): +86 18924479531\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eStainless Steel Valved Exhaust System — The Smart Choice for Performance \u0026amp; Sound\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eI. Product Overview\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003eWhat is an OEM-Integrated Valved Exhaust System?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eIn simple terms, this is a high-performance exhaust system equipped with a valve mechanism that is directly driven by your vehicle's factory original motor. Instead of relying on an external remote control or aftermarket vacuum lines, the system uses a precision-engineered bracket to mount your OEM valve motor, allowing the exhaust valve to follow your car's original ECU programming seamlessly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt Solves the Dilemma of Traditional Exhausts:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eChambered \/ Closed-Loop Design — Good low-end torque, but restricted airflow at high RPM limits peak power.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eStraight-Through Design — Strong top-end horsepower, but noticeable low-end torque loss with excessive noise.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOur Valved System Combines the Best of Both Worlds:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhen the valve is closed, exhaust gases travel through a smaller-diameter or single pipe, maintaining adequate backpressure to preserve low-end torque for city driving. When the valve opens (automatically triggered by the factory ECU based on engine load and RPM), gases flow through a larger-diameter or dual-path design, dramatically reducing backpressure to unlock full high-RPM horsepower.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eII. Key Product Advantages\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan\u003ePremium Stainless Steel Construction\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eCrafted from high-grade 304 stainless steel, our exhaust systems offer outstanding heat resistance (withstanding up to 1050°C) and superior corrosion protection, ensuring long-term durability under extreme exhaust temperatures. Precise wall-thickness control also contributes to effective weight reduction.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSeamless OEM-Level Control\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003ePlug-and-Play with Factory Motor — No remote controls, no extra wiring. The system uses your car's original valve motor mounted on our custom bracket, making installation clean and completely reversible.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eECU-Driven Logic — The valve operates automatically according to your vehicle's factory engine management system, responding in real time to throttle position, RPM, and selected drive mode (e.g., Comfort vs. Sport). No manual intervention is needed — the system simply works as the manufacturer intended.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eFull Retention of Factory Functions — All original electronic features remain intact. The exhaust behaves like a factory performance option, giving you intelligent, adaptive sound and power delivery.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eDual Enhancement – Performance \u0026amp; Sound\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eValve Closed (Daily \/ Comfort Mode) — A deep, mellow tone (~80–85 dB), near-stock sound levels, making it perfect for daily commuting, residential areas, and highway cruising with zero drone.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eValve Open (Sport \/ Performance Mode) — Unleashes an aggressive, high-pitched roar accompanied by sharper throttle response and noticeably smoother high-RPM power delivery — giving you the full performance experience whenever the engine demands it.\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBolt-On \/ Direct-Fit Installation\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eDesigned for a true direct-fit replacement of your factory catback section. No cutting, no welding, and 100% reversible. Installation is straightforward and hassle-free with basic hand tools.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIII. Application Scenarios\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eDaily Commute \u0026amp; Highway Cruising\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eValve State: Closed (automatically controlled by OEM ECU)\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eQuiet and comfortable with near-stock exhaust volume — perfect for stop-and-go traffic and long-distance drives without driver fatigue.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWeekend Canyon Runs \u0026amp; Track Days\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eValve State: Open (automatically engaged by OEM ECU under load)\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eUnleash your engine's full potential with aggressive high-RPM response and a roaring exhaust note — making every spirited drive truly exhilarating.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLate-Night Returns\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eValve State: Closed (via factory comfort mode)\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eOne-touch (drive-mode select) quiet operation — no more worrying about disturbing neighbors when coming home late.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCar Shows \u0026amp; Enthusiast Meetups\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eValve State: Open (triggered by sport-mode activation)\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTurn heads with a commanding exhaust presence that showcases your unique taste in high-performance modification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIV. Product List\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eCompatible Models: \u003c\/span\u003e\u003cspan\u003eAston Martin DBX 4.0T\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e(If you are unsure whether this product fits your vehicle, please contact customer service for confirmation.)\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eHigh-performance catback exhaust system (with OEM motor mounting bracket) — 1 set\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eMounting hardware and screw kit\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\u003cspan\u003eInstallation manual\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eV. Why Choose Us?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e● In-house factory production — direct quality control and competitive pricing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e● Broad vehicle coverage with customization options available\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e● Premium 304 stainless steel — durable, rust-proof, and built to last\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e● Comprehensive after-sales technical support\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e● OEM \/ ODM orders are welcome\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eVI. Contact Us\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eInterested in learning more or requesting a custom quote? Reach out to us:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEmail: \u003c\/span\u003e\u003ca rel=\"noopener noreferrer\" target=\"_blank\"\u003e\u003cspan\u003eOUCHIEXHAUST009@gmail.com\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhatsApp \/ Kakao Talk: +86 18924479531\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/article\u003e\n\u003c\/article\u003e","brand":"HMD Performance Exhaust","offers":[{"title":"Default Title","offer_id":49347930095875,"sku":"AM-DBX-40T-SS-V-CB","price":1194.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3084\/4675\/files\/0004__7_964e2b53-0d56-4feb-ae16-961e888950d6.jpg?v=1785393270","url":"https:\/\/hmd-exhaust.myshopify.com\/products\/aston-martin-dbx-4-0t-catback-sus304-valved-sport-exhaust-system","provider":"HMD Performance Exhaust","version":"1.0","type":"link"}