{"product_id":"dinan®-20-24-bmw-m340i-m440i-304ss-3-free-flow-axle-back-exhaust-with-4-od-polished-tips","title":"Dinan® (20-24) BMW M340i\/M440i 304SS 3\" Free Flow Axle-Back Exhaust with 4\" OD Polished Tips","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003eCOMPATIBLE: (3.0L - B58B30)\u003c\/h1\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e2020 - 2024 BMW M340i \u003c\/h1\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e2020 - 2024 BMW M340i xDrive\u003c\/h1\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e2021 - 2024 BMW M440i\u003c\/h1\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e2021 - 2024 BMW M440i xDrive\u003c\/h1\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e2022 - 2024 BMW M440i Gran Coupe\u003c\/h1\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e2022 - 2024 BMW M440i xDrive Gran Coupe\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003ch3 class=\"full_description\"\u003eQuad exhaust tips have been a signature feature of the most powerful letter in the automotive sphere for quite some time. It is a hallmark of the brand that Dinan has long embraced, limiting its own quad tip usage to those M cars that already sported like tip quantity from the factory. That is… until now with the release of the Dinan axle back exhaust system for the G20 M340i and G2x M440i. While some may scoff at the feature being implemented into a \"pseudo-M,\" the M340i\/M440i, and the B58 engine platform, are extremely potent and worthy of such a distinction. The factory valance also accommodates the four massive 102mm tips perfectly, further cementing our opinion that the quad tips were destined to be on this performance model. Being numerous and big are not the only selling points to the tips however. Dinan has retained its signature straight cut tip design, safeguarding its unique and elegant styling position amongst a crowded marketplace full of angle cuts. With systems available with either black ceramic coated or polished clamp-on, and laser engraved exhaust tips, there is a version that is sure to meet your individual aesthetic needs. The use of quad tips also presented some additional challenges and fostered some innovation to the already visually impressive system constructed entirely of TIG welded and brushed T304 stainless steel. Confined to dual tips, the factory system utilizes only one exhaust valve and functions by eliminating the passenger side tip when the valve is closed, siphoning all gases through the muffler and out the driver's side tip for quieter operation. With the introduction of more pipes\/tips, this methodology was not practical, or desired. In true Dinan M exhaust fashion, our talented engineering team decided that integrating a second valve to the system would garner the most favorable results in both symmetry and overall sound. The result is a system that incorporates larger 76mm tubing (vs 70mm stock) and allows freer flow through the entirety of the system but specifically to both outer pipes when the enlarged valves are open. The resulting flow and sound mimics an awe-inspiring straight pipe solution with a deeper and meatier tone, a defining element of all Dinan exhausts. In contradiction to the aggressiveness resulting from open valves, when the valves are closed, all gasses are forced into the muffler for sound deadening and exit the two inner tips. Regardless of valve position, the intimate nature of the interior is retained so conversation can continue without an excessively loud drone courtesy of numerous drone abatement technologies in the can. With the Dinan exhaust equipped on the M340i\/M440i you get the best of both worlds; aggressive tone\/sound and civility. A combination that is a paramount to any M exhaust, and now by virtue of tip count, the M340i and M440i. Welcome to the illustrious family.\u003c\/h3\u003e\n\u003cul class=\"productpage_list\"\u003e\n\u003cli\u003e\n\u003ch3\u003eMore Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eEnjoyably louder, sportier sound\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eQuad 4\" diameter clamp-on, double-walled, polished and laser engraved exhaust tips\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e100% 304 stainless steel construction\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eLarger diameter piping for increased flow (76mm vs 70mm)\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e4 lbs lighter than the stock system\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eStock exhaust valve actuator reused and another valve\/actuator added to the opposing side promoting even flow regardless of valve position\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eComputer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eTwin exhaust valves are a whopping 76mm diameter, making them 30% less restrictive than the OE valves\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003eEasy bolt-on installation with included mounting hardware\u003cbr\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable cellspacing=\"0\" class=\"attributes-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eBrand\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Brand\" itemprop=\"brand\"\u003e\n\u003ch3\u003eDinan\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eDinan Point Value\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e3\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eEmission Code\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e5\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eHeight\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e10\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eLabor Time (Hours)\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e2.5\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eLength\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e54\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eMax HP Gain\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e6 @ 6600 RPM\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eMax Torque (lb-ft) Gain\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e5 @ 6600 RPM\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eProduct Type\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eAxle-Back Exhaust\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eWeight\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e68\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eWidth\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e29\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003eUPC\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003e813725028767\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003e\n\u003ch3\u003ePart Number\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003ch3\u003eD660-0085\u003c\/h3\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eABOUT DINAN CARS\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cdiv class=\"about\" data-mce-fragment=\"1\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eFounded in 1979, Dinan is well established as North America's premiere BMW tuner. In recent years Dinan has further expanded its portfolio to include other European marques such as MINI and Mercedes Benz. For all makes, Dinan develops, manufactures and markets a comprehensive line of high performance products and systems, distributed through a worldwide network of Authorized Dinan Performance Centers that include New Car Dealerships as well as Independent Service\/High Performance facilities. The expansive dealer network coupled with Dinan's industry leading warranty program, quality products and solid engineering have helped make Dinan a household word among driving enthusiasts that desire \"performance without sacrifice.\"\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eInstall Guide:\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/documents.dinancars.com\/d660-0085_r5.pdf\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Wrench_small.jpg?v=1528997396\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Wrench_small.jpg?v=1528997396\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/images.holley.com\/prop65_warning.png\" data-mce-fragment=\"1\" data-mce-selected=\"1\" data-mce-src=\"https:\/\/images.holley.com\/prop65_warning.png\"\u003e\u003c\/p\u003e\n\u003ch1 data-mce-fragment=\"1\"\u003eWARRANTY:\u003c\/h1\u003e\n\u003cp data-mce-fragment=\"1\"\u003e \u003ca href=\"https:\/\/10secondracing.com\/pages\/dinan%C2%AE-product-warranty\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/10secondracing.com\/pages\/dinan%C2%AE-product-warranty\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Screenshot2024-02-04at10.48.51AM_2048x2048.png?v=1707061750\" alt=\"\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Screenshot2024-02-04at10.48.51AM_2048x2048.png?v=1707061750\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Dinan®","offers":[{"title":"Default Title","offer_id":40389427101790,"sku":"D660-0085","price":1666.56,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Screenshot2024-02-20at11.05.54AM.png?v=1708445346","url":"https:\/\/10secondracing.com\/en-gb\/products\/dinan%c2%ae-20-24-bmw-m340i-m440i-304ss-3-free-flow-axle-back-exhaust-with-4-od-polished-tips","provider":"10 Second Racing","version":"1.0","type":"link"}