{"product_id":"stone-exhaust-bmw-b58-g12-740li-valvetronic-catback-exhaust-system","title":"Stone Exhaust BMW B58 G12 740Li Valvetronic Catback Exhaust System","description":"\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\n\u003cp class=\"unreset\"\u003eWe are proud to introduce you to the state of the art \u003cspan data-mce-fragment=\"1\"\u003eOEM Integrated Valve Catback Exhaust\u003c\/span\u003e, to enhance the performance and sound of your G12 \u003cspan\u003eSedan 740Li\u003c\/span\u003e with 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 class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\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\u003cul\u003e\u003c\/ul\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eBMW B58 G11 740i with Stone Exhaust OEM DP + Valvetronic Cat-Back Exhaust System Sound\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/JusvaVXRnW0\" height=\"315\" width=\"560\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eFitted Photo(s)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled_b0d3e494-13af-44f2-a784-81cf50235704_600x600.png?v=1588753704\" alt=\"Stone Exhaust BMW B58 G11 G12 740i Cat-Back Valvetronic Exhaust | Stone Exhaust USA\"\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled1_870415ca-9884-40e2-8f89-f18f7a8422c4_600x600.png?v=1588754582\" alt=\"Stone Exhaust BMW B58 G11 G12 740i Cat-Back Valvetronic Exhaust | Stone Exhaust USA\"\u003e\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled2_5a76b081-734b-4036-96e8-b4ddb1172e2c_600x600.png?v=1588754591\" alt=\"Stone Exhaust BMW B58 G11 G12 740i Cat-Back Valvetronic Exhaust | Stone Exhaust USA\"\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled3_0e4a4f76-7190-4c2c-aeb0-2eca8bbf6cd5_600x600.png?v=1588754600\" alt=\"Stone Exhaust BMW B58 G11 G12 740i Cat-Back Valvetronic Exhaust | Stone Exhaust USA\"\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled4_8a0ab1da-89f5-4b9c-b654-b95fc22a0d4c_600x600.png?v=1588754627\" alt=\"Stone Exhaust BMW B58 G11 G12 740i Cat-Back Valvetronic Exhaust | Stone Exhaust USA\"\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled5_5f62c7da-dfd5-4e70-893f-9bee2dd2099b_600x600.png?v=1588754646\" alt=\"Stone Exhaust BMW B58 G11 G12 740i Cat-Back Valvetronic Exhaust | Stone Exhaust USA\"\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled6_c058ea31-9996-4f5d-b57f-9e13f8cba054_600x600.png?v=1588754658\" alt=\"Stone Exhaust BMW B58 G11 G12 740i Cat-Back Valvetronic Exhaust | Stone Exhaust USA\"\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\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.\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\u003cp class=\"unreset\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/1_9336c8b0-c9ea-4822-891c-83490f630707.jpg?v=1572705528\" alt=\"Stone Exhaust System 3D Scanning Reverse Engineering UK\"\u003e\u003c\/p\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\u003cimg alt=\"7 Axis CNC Bending Machine | Stone Exhaust USA\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/bending_480x480.png?v=1619575566\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cbr\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: left;\"\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 - Stone Exhaust USA\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cstrong\u003eDirect Spot Welding\u003c\/strong\u003e\u003c\/div\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\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_2_1024x1024.jpg?v=1572828178\" alt=\"Stone Exhaust Art of Welding - Stone Exhaust USA\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility - B58 Engine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBMW 7 Series\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eG12 \u003cspan\u003e740Li \u003c\/span\u003e(2014-2019)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003eAP538BS (G12 740Li)\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cspan\u003eStone Exhaust 2\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eYear Warranty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimension \u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e147cm x 31cm x 58.5cm \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e20.89 kg \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEmission Notice \u003c\/strong\u003e\u003c\/p\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003cspan\u003e\u003cspan\u003eVarious U.S. states and the U.S. federal government have individual laws regulating the use of aftermarket exhaust parts and system, especially when the stock system is modified, remove, or if you are replacing original catalysts. Please consult the appropriate law department in your area before installing any aftermarket part or system on your vehicle to ensure compliance with all applicable laws. The purchasers are entirely responsible for informing themselves of the applicable laws where the products are to be used and to comply with those \u003c\/span\u003e\u003c\/span\u003elaws.\n\u003cdiv class=\"style-scope ytd-video-primary-info-renderer\"\u003e\n\u003cdiv class=\"style-scope ytd-video-primary-info-renderer\"\u003e\n\u003cdiv class=\"style-scope ytd-video-primary-info-renderer\"\u003e\n\u003cp class=\"unreset\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003cspan\u003e\u003cspan style=\"font-weight: 400;\"\u003eIf you are residing in Europe, Stone’s cat-back exhausts are OPF-compatible, which means you won’t need to code out the OPF or worry about losing your warranty.\u003c\/span\u003e\u003c\/span\u003e\u003c\/article\u003e\n\u003c\/article\u003e\n\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003c\/article\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003c\/article\u003e","brand":"Stone Exhaust","offers":[{"title":"Default Title","offer_id":48679171129569,"sku":"AP538BS","price":4518.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/mlperformanceusa.com\/products\/stone-exhaust-bmw-b58-g12-740li-valvetronic-catback-exhaust-system","provider":"ML Performance USA","version":"1.0","type":"link"}