{"product_id":"dinan-free-flow-axle-back-exhaust-for-2020-2026-bmw-m340i-m440i-d660-0085-blk-x1yuxd","title":"Dinan Free Flow Axle-Back Exhaust for 2020-2026 BMW M340i\/M440i - D660-0085-BLK","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eGive your BMW M340i or M440i a deeper exhaust note, freer-flowing exhaust path, and distinctive quad-tip appearance with the Dinan D660-0085-BLK Free Flow Axle-Back Exhaust. Designed for select 2020-2026 BMW M340i and 2021-2026 M440i applications across the G20, G22, G23, and G26 chassis, this system is constructed from TIG-welded T304 stainless steel and finished with four 4-inch black ceramic coated, double-wall, straight-cut exhaust tips. Dinan uses larger 76mm piping versus the factory 70mm system and reports gains of up to 6 HP and 5 lb-ft of torque at 6,600 RPM.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUnlike the factory single-valve configuration, the Dinan system incorporates twin 76mm exhaust valves to provide balanced flow across both sides of the exhaust. The factory exhaust valve actuator is reused, while an additional valve and actuator are added to the opposite side. With the valves open, exhaust is directed through the freer-flowing outer outlets for a louder, deeper tone. With the valves closed, exhaust gases are routed through the muffler and exit the inner tips to reduce sound during lower-speed driving. Dinan's internal drone-abatement design helps maintain a more comfortable cabin while delivering a sportier exhaust character under load.\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\u003eProduct Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Free Flow 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 D660-0085-BLK\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eChassis:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e G20 \/ G22 \/ G23 \/ G26\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 Black Ceramic Coated\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-Wall, 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\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eExhaust Piping:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 76mm vs. 70mm 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 Dual 76mm computer-controlled valves\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eValve Flow:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Dinan states the 76mm valves are 30% less restrictive than the OE valves\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eValve Operation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Retains computer-controlled functionality for quieter low-speed driving and increased sound under high-load conditions\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFactory Actuator:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Reused\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAdditional Actuator:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Second valve \/ actuator added to opposing side\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum HP Gain:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e +6 HP at 6,600 RPM\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaximum Torque Gain:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e +5 lb-ft at 6,600 RPM\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWeight Reduction:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 4 lb lighter than stock\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 with drone-abatement features for improved cabin comfort\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eInstallation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Bolt-on\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 2.5 hours\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLength:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 54 in\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWidth:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 29 in\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 10 in\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 68 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 813725028774\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAlternate Finish:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Polished-tip version available as Dinan D660-0085\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\u003e2020-2026 BMW M340i\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2020-2026 BMW M340i xDrive\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2021-2026 BMW M440i\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2022-2024 BMW M440i Gran Coupe\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2021-2024 BMW M440i xDrive\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2022-2024 BMW M440i xDrive Gran Coupe\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":45710500692054,"sku":"DNND660-0085-BLK","price":719.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/0411\/1190\/files\/j8kjzsbn6oh3_b29ba206-4823-4924-82fd-ba19c5ab3707.jpg?v=1788772513","url":"https:\/\/truegearus.com\/products\/dinan-free-flow-axle-back-exhaust-for-2020-2026-bmw-m340i-m440i-d660-0085-blk-x1yuxd","provider":"TrueGear","version":"1.0","type":"link"}