{"product_id":"stone-exhaust-bmw-b58-g11-g12-cat-back-exhaust-system-740i-740li","title":"Stone Exhaust BMW B58 G11 G12 OEM Integrated Valved Catback Exhaust System (740i \u0026 740Li)","description":"\u003ch4\u003e\u003cspan\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eThis Exhaust System is often purchased with the \u003cspan style=\"text-decoration: underline; color: #2b00ff;\" data-mce-style=\"text-decoration: underline; color: #2b00ff;\"\u003e\u003ca href=\"\/products\/stone-exhaust-bmw-b58-catless-performance-downpipe-inc-m140i-m240i-440i-540i-x5-m40i\" title=\"Stone Exhaust BMW B58 Catless Performance Downpipe (Inc. M140i, M240i, 440i, 540i \u0026amp; X5 M40i) - ML Performance US\" style=\"color: #2b00ff; text-decoration: underline;\" data-mce-style=\"color: #2b00ff; text-decoration: underline;\"\u003eStone Exhaust BMW B58 Catless Performance Downpipe (Inc. M140i, M240i, 440i, 540i, 740i \u0026amp; X5 M40i)\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"color: #2b00ff;\" data-mce-style=\"color: #2b00ff;\"\u003e \u003c\/span\u003eor the \u003ca href=\"\/products\/stone-exhaust-bmw-b58-eddy-catalytic-performance-downpipe-inc-m140i-m240i-440i-540i-x5-m40i\" title=\"Stone Exhaust BMW B58 Eddy Catalytic Performance Downpipe (Inc. M140i, M240i, 440i, 540i \u0026amp; X5 M40i) - ML Performance US\"\u003e\u003cspan style=\"text-decoration: underline; color: #2b00ff;\" data-mce-style=\"text-decoration: underline; color: #2b00ff;\"\u003eStone Exhaust BMW B58 Eddy Catalytic Performance Downpipe (Inc. M140i, M240i, 440i, 540i, 740i \u0026amp; X5 M40i\u003c\/span\u003e\u003c\/a\u003e) \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eYou may wish to add the \u003cspan style=\"color: #2b00ff;\"\u003e\u003ca href=\"https:\/\/stoneexhausts.com\/products\/stone-cat-back-valvetronic-system-package\" style=\"color: #2b00ff;\" data-mce-href=\"https:\/\/stoneexhausts.com\/products\/stone-cat-back-valvetronic-system-package\" target=\"_blank\"\u003eStone Valvetronic System\u003c\/a\u003e\u003c\/span\u003e (Singe Valve) which enables you to control the valves remotely via the stone remote controller.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eStone Exhaust Cat-Back Exhaust System \u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e(740i \u0026amp; 740Li)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003eWe are proud to introduce you to the state of the art\u003cspan\u003e \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eOEM Integrated Valve Catback Exhaust\u003c\/span\u003e, to enhance the performance and sound of your BMW G11 Sedan 740i \u0026amp; G12 \u003cspan\u003eSedan 740i\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003ewith the B58 engine.\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003eStone Exhaust has been developing world's best exhaust system since 1998, starting with 3D scanning and reverse engineering the OEM system, this allows the Stone engineers to design a 100% OEM fitment exhaust with precision. With our in-house dyno, your BMW exhaust system is proven to produce more power with the enhanced Stone signature exhaust sound.\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cspan\u003eThe OEM Integred Valve option allows your exhuast system to operate as standard, where the onboard computer (ECU) will control the opening and closing of the valves automatically.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOEM Integration \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable to add-on Stone Valvetronic System\u003c\/li\u003e\n\u003cli\u003ePlug and Play OBDII controller\u003c\/li\u003e\n\u003cli\u003eOne Piece Design\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMechanical Welding with Precision\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eIn House Research and Development\u003c\/li\u003e\n\u003cli\u003e3D Scanning \u0026amp; Reverse Engineering\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDyno Developed In House\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEliminates drone found on the standard exhaust system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOPF Delete\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003eStone offers an OPF delete, which can be included free of charge, this allows you to install the Stone Cat-Back exhaust system on OPF equipped cars without throwing an error code, thus coding out the OPF error code on the ECU is not required.\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cspan\u003e\u003cstrong\u003eR\u0026amp;D and 3D Scanning\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cspan\u003eStone Exhaust engineers use reverse engineering by 3D scanning OEM parts to understand their functionality and identify weaknesses. Data has been collected continuously in order to analyze factors such as pipe diameter, route and degrees of the bending angles of the Exhaust System found on the BMW B58 G11 G12 740i \u0026amp; 740Li. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cspan\u003eDuring R\u0026amp;D, Stone Exhaust utilizes the 3D simulation software to stimulate the exhaust gas flow movement, thermal and pressure rise zone. Progressive improvements were continually made until the optimal performance was achieved.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"Stone Exhaust System 3D Scanning Reverse Engineering - ML Performance US\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/1_9336c8b0-c9ea-4822-891c-83490f630707.jpg?v=1572705528\" data-mce-style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7 Axis CNC Bending Machine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStone Exhaust System are constructed utilizing a 7 axis CNC Bending Machine which is the ultimate machine for high levels of precision delivery, necessary for industries such as the aerospace and defense industries.\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\u003c\/ol\u003e\n\u003cp\u003eWith the state-of-the-art bending machine, Stone Exhaust has achieved the industry’s standard to an impressive 98% roundness, whilst maintaining the wear of the outer bore at only 25% at 180\u003cstrong\u003e°\u003c\/strong\u003e. Airflow obstruction and welding fracture problems are prevented by utilizing this technology. With the combination of the CNC Bending machine, Reverse Engineering and 3D Design Scanning, Stone exhaust has created an integrally molded exhaust pipe with an accuracy error under 0.025mm.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"Stone Exhaust System Bending - ML Performance US\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/bending.jpg?v=1572739395\" data-mce-style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCrisscross and Overlapping Welding Technique\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe flange between the turbo and the downpipes reaches extreme temperatures (800? to 1100?) which creates stress on the connection point. By utilizing both welding techniques to increases the width and penetration of welds. This increases the endurance and tolerance of these connection points, leading to quality products with reliable performance.\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\" data-mce-style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_1_1024x1024.jpg?v=1572828150\" alt=\"Stone Exhaust Art of Welding - ML Performance US\" width=\"1024x1024\" height=\"1024x1024\" style=\"float: none;\" data-mce-style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Spot Welding\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur highly skilled engineers perform direct spot welding to increase product strength. This is undertaken by mechanical welding arms, proven to achieve greater precision and penetration in their welds compared to manual welding, resulting in an end product that is a work of art.\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\" data-mce-style=\"text-align: start;\"\u003e\u003cimg style=\"float: none;\" alt=\"Stone Exhaust Art of Welding - ML Performance US\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_2_1024x1024.jpg?v=1572828178\" data-mce-style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eB58 Engine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBMW 7 Series\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eG11 740i (2014-2019)\u003c\/li\u003e\n\u003cli\u003eG12 \u003cspan\u003e740Li \u003c\/span\u003e(2014-2019)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp class=\"unreset\"\u003eAP538A (G11 740i)\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003eAP538B (G12 740Li)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eMore Information\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eManufactured by\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStone Exhaust\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStone Exhaust 2 Year Warranty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Stone Exhaust","offers":[{"title":"G11 740i","offer_id":48679172964577,"sku":"AP538A","price":3627.3,"currency_code":"USD","in_stock":true},{"title":"G12 740Li","offer_id":48679172997345,"sku":"AP538B","price":3627.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/7608\/4961\/files\/StoneExhaustBMWB58G11G12OEMIntegratedValvedCatbackExhaustSystem_740i_740Li_1.jpg?v=1784822195","url":"https:\/\/mlperformanceusa.com\/products\/stone-exhaust-bmw-b58-g11-g12-cat-back-exhaust-system-740i-740li","provider":"ML Performance USA","version":"1.0","type":"link"}