{"product_id":"stone-exhaust-bmw-b48-g20-g30-g31-catless-downpipe-330i-520i-530i-x4-20i-xdrive-x4-30i-xdrive","title":"Stone Exhaust BMW B48 G20 G30 G31 Catless Downpipe (Inc. 330i, 530i, X4 20i xDrive \u0026 X4 30i xDrive)","description":"\u003ch4\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp class=\"unreset\"\u003e\u003cspan\u003eStone Exhaust employs state of the art 3D flow velocity measurement software and the technique of a one-piece mandrel bent pipe design. Using mechanical welding arms to accurately weld stops ash generating in the pipe wall which can cause vapor lock and poor exhaust efficiency. Stone Exhaust’s innovative manufacturing process of the catless downpipe prevents multiple welding positions and vapor lock whilst maximizing efficiency of the exhaust turbine.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures \u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eCatless downpipe for 320i, 330i, 520i, 530i, X4 20i xDrive \u0026amp; X4 30i xDrive with B48 engine.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eCrisscross welding to strengthen turbo flange\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOne Piece Design\u003c\/li\u003e\n\u003cli\u003eMachine Welding\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\u003e100% OEM Fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eR\u0026amp;D and 3D Scanning\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\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 BMW B48 G20 G30 G31 B48 330i, 520i \u0026amp; 530i. During 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\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/1_9336c8b0-c9ea-4822-891c-83490f630707_2048x2048.jpg?v=1572705528\" alt=\"Stone Exhaust BMW B48 G20 G30 G31 Catless Downpipe (Inc. 330i, 530i, X4 20i xDrive \u0026amp; X4 30i xDrive) | ML Performance US\"\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\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWith the state-of-the-art bending machine, Stone Exhaust has achieved the industry 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\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/bending_2048x2048.jpg?v=1572739395\" alt=\"Stone Exhaust BMW B48 G20 G30 G31 Catless Downpipe (Inc. 330i, 530i, X4 20i xDrive \u0026amp; X4 30i xDrive) | ML Performance US\"\u003e\u003c\/div\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\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_1_2048x2048.jpg?v=1572828150\" alt=\"Stone Exhaust BMW B48 G20 G30 G31 Catless Downpipe (Inc. 330i, 530i, X4 20i xDrive \u0026amp; X4 30i xDrive) | ML Performance US\"\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\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_2_2048x2048.jpg?v=1572828178\" alt=\"Stone Exhaust BMW B48 G20 G30 G31 Catless Downpipe (Inc. 330i, 530i, X4 20i xDrive \u0026amp; X4 30i xDrive) | ML Performance US\"\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\u003e- B48 Engine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBMW 3 Series\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eG20 320i \/ 330i (2017+)\u003c\/li\u003e\n\u003cli\u003eG21 320i \/ \u003cspan\u003e330i \/ 330i xDrive\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e(2018+)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eBMW 5 Series\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eG30 520i (2016-2019)\u003c\/li\u003e\n\u003cli\u003eG30 530i\/530i xDrive (2015-2019)\u003c\/li\u003e\n\u003cli\u003eG31 520i (2016-2019)\u003c\/li\u003e\n\u003cli\u003eG31 \u003cspan\u003e530i\/530i xDrive (2016+-2019)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eBMW 6 Series\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eG32 630i GT (2017+)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eBMW 7 Series\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eG11 730i (2014-2019)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eBMW X Series\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eG01 X3 20i xDrive (2017-2018) \/ X3 30i xDrive (2016-2018)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eG02 X4 20i xDrive (2017-2019) \/ \u003c\/span\u003eX4 30i xDrive (\u003cspan data-mce-fragment=\"1\"\u003e2017-2019\u003c\/span\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eBMW Z Series\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eG29 Z4 20i (2019+)\/Z4 30i (2017+) \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eA216P\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 Exhausts\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003eStone Exhaust 2\u003cspan\u003e \u003c\/span\u003eYear Warranty\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEmission Notice\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\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 laws.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003ePhotos \u0026amp; Videos\u003c\/strong\u003e\u003c\/h4\u003e\n\u003carticle class=\"unreset\" data-scroll-scope=\"\"\u003e\u003cstrong\u003eStock V.S Catless Downpipe\u003c\/strong\u003e\u003c\/article\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"Stone Exhaust BMW B48 G20 G30 G31 Catless Downpipe (Inc. 330i, 530i, X4 20i xDrive \u0026amp; X4 30i xDrive) | ML Performance US\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled_1e48206d-a6f0-47a7-acc1-8d3e211f815c_2048x2048.png?v=1588593940\"\u003e\u003c\/div\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\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"Stone Exhaust BMW B48 G20 G30 G31 Catless Downpipe (Inc. 330i, 530i, X4 20i xDrive \u0026amp; X4 30i xDrive) | ML Performance US\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled1_b1ca6ebd-cc36-4cb7-8129-88597e3a10a2_2048x2048.png?v=1588593952\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"Stone Exhaust BMW B48 G20 G30 G31 Catless Downpipe (Inc. 330i, 530i, X4 20i xDrive \u0026amp; X4 30i xDrive) | ML Performance US\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled2_c60353a1-b5ca-4038-9319-b45d81f4cdce_2048x2048.png?v=1588593962\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e","brand":"Stone Exhaust","offers":[{"title":"Default Title","offer_id":48679169032417,"sku":"A216P","price":917.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/7608\/4961\/files\/20190917165243541_381c3782-b3a9-4621-b4d0-444bad3206a7.png?v=1784820477","url":"https:\/\/mlperformanceusa.com\/products\/stone-exhaust-bmw-b48-g20-g30-g31-catless-downpipe-330i-520i-530i-x4-20i-xdrive-x4-30i-xdrive","provider":"ML Performance USA","version":"1.0","type":"link"}