{"product_id":"dinan-valved-axle-back-exhaust-for-2021-2027-bmw-m3-m4-d660-0093-blk-56aw8j","title":"Dinan Valved Axle-Back Exhaust for 2021-2027 BMW M3\/M4 - D660-0093-BLK","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBring a fuller, lower-pitched exhaust character to the G8x platform with the Dinan D660-0093-BLK Valved Axle-Back Exhaust. Engineered for 2021-2027 BMW M3 and M4 applications on the G80, G82, and G83 chassis, this dual-in\/four-out system pairs TIG-welded T304 stainless steel construction with larger 76mm piping, retained factory exhaust valves, and four oversized 4.5-inch black ceramic coated tips. Dinan reports maximum gains of 6 HP and 5 lb-ft of torque while reducing axle-back weight by approximately 6 pounds compared with stock.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eExtensive sound development went into balancing exterior volume with cabin comfort across both sedan and coupe\/convertible body styles. With the valves closed, exhaust is directed through the Dinan muffler, where absorption and reactive technologies help create a deeper but more restrained tone. Under high-load conditions, the factory-controlled valves open and allow most exhaust gases to bypass the muffler for a near straight-through path and significantly greater sound. The stock valve actuators are reused, so exhaust behavior remains integrated with the factory M Drive controls.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eVisually, the system is finished with four 114mm (4.5-inch) straight-cut, double-wall black ceramic coated tips that fill the factory diffuser openings. The polished T304 stainless system is brush finished, while the laser-engraved Dinan branding completes the performance-focused rear appearance.\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 Valved 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 D660-0093-BLK\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFitment:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e BMW M3 \/ M4\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eChassis:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e G80 \/ G82 \/ G83\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSystem Style:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Rear Axle-Back\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eExhaust Configuration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Dual In \/ Four Out\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eExit Location:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Rear\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaterial:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e T304 \/ 304 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\u003eIntermediate Pipe Diameter:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 3.0 in \/ 76mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTailpipe Diameter:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 3.0 in \/ 76mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFactory Pipe Diameter:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 70mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMuffler Included:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMuffler Quantity:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMuffler Configuration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Dual Inlet \/ Dual Outlet\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMuffler Material:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 304 Stainless Steel\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMuffler 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 4.5 in \/ 114mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTip Shape:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Round\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTip Cut:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Straight\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTip Edge Style:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Beveled, Double-Wall\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTip Material:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 304 Stainless Steel\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\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 6 lb vs. stock axle-back\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eStock Axle-Back Weight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 44 lb\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDinan Axle-Back Weight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 38 lb\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\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\u003eValves Closed:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Flow routed through muffler for a deeper, more subdued tone\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eValves Open:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Majority of flow bypasses muffler for near straight-through operation\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eSound:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Deeper, louder, fuller exhaust character\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDrone Control:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Engineered to reduce unwanted cabin resonance\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCatalytic Converters Included:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e No\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eInstallation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Factory-style bolt-on fitment\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHardware Included:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Yes\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 2.7 hours\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 090127141892\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\u003e2021-2026 BMW M3 - G80\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2021-2026 BMW M3 Competition - G80\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2022-2026 BMW M3 Competition xDrive - G80\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2021-2026 BMW M4 - G82 \/ G83\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2021-2026 BMW M4 Competition - G82 \/ G83\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2022-2026 BMW M4 Competition xDrive - G82 \/ G83\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2023 BMW M4 CSL - G82\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2027 BMW M3\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2027 BMW M4\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":45710494564438,"sku":"DNND660-0093-BLK","price":704.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/0411\/1190\/files\/raxm0uhnx6q2_1112bdec-a5de-483b-92b6-d5e21cecf1e8.jpg?v=1788772489","url":"https:\/\/truegearus.com\/products\/dinan-valved-axle-back-exhaust-for-2021-2027-bmw-m3-m4-d660-0093-blk-56aw8j","provider":"TrueGear","version":"1.0","type":"link"}