{"product_id":"dinan-valved-axle-back-exhaust-system-with-polished-tips-for-bmw-m3-m4-2021-2025","title":"Dinan Valved Axle-Back Exhaust System with Polished Tips for BMW M3 \/ M4 2021-2025","description":"\n\u003cdiv data-mce-fragment=\"1\" class=\"full_description\"\u003e\n\u003cdiv class=\"full_description\"\u003e\n\u003cdiv class=\"full_description\"\u003e\n\u003cdiv class=\"full_description\"\u003e\n\u003cdiv class=\"full_description\"\u003e\n\u003cdiv class=\"full_description\"\u003e\n\u003cdiv class=\"full_description\"\u003e\n\u003cdiv class=\"full_description\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff2a00;\" data-mce-style=\"color: #ff2a00;\"\u003eDinan Valved Axle-Back Exhaust System with Polished Tips for BMW M3 \/ M4 2021-2025\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv aria-hidden=\"false\" class=\"ui-tabs-panel ui-corner-bottom ui-widget-content\" role=\"tabpanel\" aria-labelledby=\"ui-id-1\" id=\"tabs-1\"\u003e\n\u003cdiv class=\"product-single__description rte\" id=\"pro_desc\" itemprop=\"description\"\u003e\n\u003cdiv aria-hidden=\"false\" class=\"ui-tabs-panel ui-corner-bottom ui-widget-content\" role=\"tabpanel\" aria-labelledby=\"ui-id-1\" id=\"tabs-1\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eDinan Valved Axle-Back Exhaust System\u003c\/strong\u003e for the \u003cstrong\u003eBMW G8x M3\/M4\u003c\/strong\u003e is designed to address the well-documented sound limitations of the S58 engine. While the G8x chassis offers improvements over its predecessor, the exhaust note can often fall short of the performance image the vehicle projects. Dinan’s exhaust system solves this by delivering a deeper, more refined tone while enhancing overall performance, offering flexibility between quiet operation and aggressive exhaust notes depending on driving conditions.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Gains:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAchieves \u003cstrong\u003e+6 HP\u003c\/strong\u003e and \u003cstrong\u003e+5 lb-ft\u003c\/strong\u003e of torque at maximum gains, contributing to increased power output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eImproved Sound:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003evalved design\u003c\/strong\u003e allows for \u003cstrong\u003elouder, sportier sound\u003c\/strong\u003e during aggressive driving while maintaining a more subdued note during low-speed operation.\u003c\/li\u003e\n\u003cli\u003eThe system also incorporates \u003cstrong\u003edrone abatement technologies\u003c\/strong\u003e to reduce cabin resonance, ensuring a more pleasant experience inside the car even with the enhanced exhaust note.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced Flow Dynamics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarger diameter piping\u003c\/strong\u003e (76mm vs. 70mm stock) improves exhaust flow and reduces backpressure, enabling more efficient performance throughout the system.\u003c\/li\u003e\n\u003cli\u003eWhen the factory \u003cstrong\u003evalves are closed\u003c\/strong\u003e, exhaust gases pass through the Dinan muffler, producing a deeper and quieter tone. When the \u003cstrong\u003evalves are open\u003c\/strong\u003e, gases bypass the muffler entirely, delivering a near straight-pipe design for maximum sound output during spirited driving.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnhanced Appearance:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe system features \u003cstrong\u003equad 4.5-inch (114mm) double-walled polished stainless steel clamp-on tips\u003c\/strong\u003e, which are laser-engraved with the Dinan logo. These \u003cstrong\u003emassive exhaust tips\u003c\/strong\u003e provide a commanding presence that fills the factory diffuser cut-outs perfectly, enhancing the vehicle’s rear-end aesthetics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight Reduction:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWeighing \u003cstrong\u003e6 pounds lighter\u003c\/strong\u003e than the stock axle-back exhaust (Dinan: 38 lbs vs. Stock: 44 lbs), this system offers a performance gain without adding excess weight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMade from \u003cstrong\u003e100% T304 stainless steel\u003c\/strong\u003e, the exhaust system is TIG welded for superior durability and corrosion resistance. The entire system is brush finished for a clean, immaculate appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFactory Valve Integration:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe system retains the \u003cstrong\u003efactory exhaust valve actuators\u003c\/strong\u003e, so the vehicle's \u003cstrong\u003eM-drive settings\u003c\/strong\u003e can continue to control the exhaust tone. This allows for precise customization of the exhaust note based on driving preferences, from subtle to aggressive.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-mce-fragment=\"1\" id=\"Features\" class=\"tabcontent\"\u003e\n\u003ctable cellspacing=\"0\" class=\"attributes-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eBrand\u003c\/th\u003e\n\u003ctd class=\"data\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Brand\" itemprop=\"brand\"\u003eDinan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eDinan Point Value\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eEmission Code\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eLabor Time (Hours)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eMax HP Gain\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6 @ 6600 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eMax Torque (lb-ft) Gain\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 @ 6600 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eProduct Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eAxle-Back Exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTip Finish\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ePolished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eUPC\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e090127141885\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003ePart Number\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eD660-0093\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 style=\"text-align: start;\" data-mce-style=\"text-align: start;\"\u003eFitment Chart:\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\" data-mce-style=\"text-align: start;\"\u003e\n\u003ctable style=\"width: 105.205%; height: 27px;\" data-mce-style=\"width: 105.205%; height: 27px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"color: #ffffff; background-color: #03589c; height: 10px;\" data-mce-style=\"color: #ffffff; background-color: #03589c; height: 10px;\"\u003e\n\u003ctd style=\"text-align: center; width: 8.29604%; height: 10px;\" data-mce-style=\"text-align: center; width: 8.29604%; height: 10px;\"\u003e\u003cstrong\u003eMake\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 18.8897%; height: 10px;\" data-mce-style=\"text-align: center; width: 18.8897%; height: 10px;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 10.8143%; height: 10px;\" data-mce-style=\"text-align: center; width: 10.8143%; height: 10px;\"\u003e\u003cstrong\u003eYear\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #e8f4f8; height: 17px;\" data-mce-style=\"background-color: #e8f4f8; height: 17px;\"\u003e\n\u003ctd style=\"text-align: center; width: 8.29604%; height: 17px;\" data-mce-style=\"text-align: center; width: 8.29604%; height: 17px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eBMW\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 18.8897%; height: 17px;\" data-mce-style=\"text-align: center; width: 18.8897%; height: 17px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eM3\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 10.8143%; height: 17px;\" data-mce-style=\"text-align: center; width: 10.8143%; height: 17px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e2021-2025\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"text-align: center; width: 8.29604%; height: 19.5938px;\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eBMW\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 18.8897%; height: 19.5938px;\"\u003eM4\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 10.8143%; height: 19.5938px;\"\u003e2021-2025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":51934116970788,"sku":"D660-0093","price":2254.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/6801\/0532\/files\/Screenshot2024-10-08at12.26.42AM.png?v=1768636765","url":"https:\/\/autohousesupply.com\/products\/dinan-valved-axle-back-exhaust-system-with-polished-tips-for-bmw-m3-m4-2021-2025","provider":"AutoHouseSupply","version":"1.0","type":"link"}