{"product_id":"dinan-free-flow-axle-back-exhaust-for-2018-2023-bmw-m5-f90-d660-0079-vnjkm6","title":"Dinan Free Flow Axle-Back Exhaust for 2018-2023 BMW M5 F90 - D660-0079","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eGive your 2018-2023 BMW F90 M5 a deeper, louder exhaust note while retaining factory-controlled valve functionality with the Dinan D660-0079 Free Flow Axle-Back Exhaust. Designed for the F90 M5, including listed Competition and CS applications, this performance exhaust is constructed from TIG-welded T304 stainless steel and features larger 83mm piping, twin secondary exhaust valves, and four massive 4-inch polished double-wall exhaust tips. The system is engineered to improve exhaust flow and reduce backpressure while maintaining a refined cabin environment during normal driving.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDinan increases the exhaust tubing diameter from 80mm stock to 83mm and incorporates a muffler using absorption and reactive technologies to deliver a deeper, sportier exhaust note while reducing unwanted low-RPM drone. Factory computer-controlled exhaust valves and actuators are retained, so valve operation remains integrated with the M Drive settings. During high-load conditions, the valves open to allow greater exhaust flow and sound, while lower-speed operation remains more subdued.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eKey Features \u0026amp; Specs:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBrand:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Dinan\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSeries:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Free Flow\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eProduct Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Axle-Back Exhaust\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePart Number:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e D660-0079\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFitment:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e BMW M5 \/ M5 Competition \/ M5 CS\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eChassis:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e F90\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaterial:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e T304 Stainless Steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBody Material:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e T304 Stainless Steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePipe Material:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e T304 Stainless Steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eConstruction:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e TIG-Welded\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSystem Finish:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Brushed\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTip Finish:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Polished\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eExhaust Tip Quantity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 4\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTip Diameter:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 4 in \/ 102mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTip Style:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Straight-Cut, Double-Walled, Clamp-On\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTip Branding:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Laser-Engraved Dinan Logo\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePipe Diameter:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 83mm vs. 80mm stock\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eExhaust Valves:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Factory computer-controlled valves retained\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSecondary Valves:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Twin 76mm valves\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eValve Restriction:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Dinan states the 76mm secondary valves are 30% less restrictive than OE valves\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFactory Valve Actuators:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Reused\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eM Drive Compatibility:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Factory exhaust valve operation remains unchanged\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSound:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Louder, deeper, sportier exhaust tone\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDrone Control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Designed to reduce low-RPM cabin resonance\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eInstallation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Easy bolt-on installation\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMounting Hardware:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Included\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eClamps Included:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHangers Included:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLabor Time:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 2.4 hours\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLength:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 50 in\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWidth:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 34 in\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 13 in\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 63 lb\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eGrade Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Performance\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDinan Point Value:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 3\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEmission Code:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 5\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eUPC:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 813725025063\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eFitment:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2018-2023 BMW M5 - F90\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2019-2023 BMW M5 Competition - F90\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2022 BMW M5 CS - F90\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":45710505541718,"sku":"DNND660-0079","price":809.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/0411\/1190\/files\/ch0tw2phnypq_65e2771a-e9f8-42ac-9172-6af4f7567d1f.jpg?v=1788772531","url":"https:\/\/truegearus.com\/products\/dinan-free-flow-axle-back-exhaust-for-2018-2023-bmw-m5-f90-d660-0079-vnjkm6","provider":"TrueGear","version":"1.0","type":"link"}