{"title":"23\/6\/2025 Stage 1 Tuning Part 2","description":null,"products":[{"product_id":"stone-exhaust-bmw-s55-f87-m2-competition-cat-back-exhaust-system","title":"Stone Exhaust BMW S55 F87 M2 Competition OEM Integrated Valved Catback Exhaust System","description":"\u003cp class=\"unreset\"\u003e\u003cstrong\u003eThis Exhaust System is often purchased with the\u003cb\u003e \u003cspan\u003e\u003ca title=\"Stone Exhaust BMW S55 F80 F82 F87 Catless Downpipe (M2 Competition, M3 \u0026amp; M4)\" href=\"\/products\/stone-exhaust-bmw-s55-f80-f82-f87-catless-downpipe-m2-competition-m3-m4?_pos=2\u0026amp;_sid=819e6e84e\u0026amp;_ss=r\" target=\"_blank\"\u003eStone Exhaust BMW S55 F80 F82 F87 Catless Downpipe (M2 Competition, M3 \u0026amp; M4)\u003c\/a\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eYou may wish to add the \u003c\/span\u003e\u003ca href=\"\/products\/stone-cat-back-valvetronic-system-package\" target=\"_blank\"\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong style=\"color: #2b00ff;\" data-mce-fragment=\"1\"\u003eStone Valvetronic System\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\"\u003e (Dual Valves) which enables you to control the valves remotely via the stone remote controller.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003e\u003c\/strong\u003eWe are proud to introduce you to the state of the art Stone Exhaust Valvetronic Cat-Back Exhaust System with dual valve(s), to enhance the performance and sound of your BMW F87 LCI Coupe M2 Competition with the S55 engine, manufactured after 2018. Stone 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 their 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 Integrated Valves option allows your exhaust 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\u003cspan\u003eThe Cat-Back Valvetronic System comes with a separate remote controller that gives you full control of the exhaust, allowing you to open and close the valves with a click of a button. You can also set it in auto mode for the valves to open at a certain rpm automatically. The Stone Valvetronic system is a plug and play system, and connects to your OBDII port, which can be installed within a few minutes.\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\u003eSTONE Valvetronic BMW S55 F87 M2 Competition Exhaust System.\u003c\/li\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\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\u003e\u003cspan\u003eDyno Developed In House\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eReduces Drone\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eSound Video\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/mOdHownExtY\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eFitted Photos(s) - Dual Exit with Quad Tailpipes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg height=\"600x600\" width=\"600x600\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/STONE_Exhaust_BMW_S55_F87_M2_Competition_Cat-Back_Valvetronic_Exhaust_-_1_600x600.jpg?v=1583256175\" alt=\"STONE Exhaust BMW S55 F87 M2 Competition Cat-Back Valvetronic Exhaust - ML Performance US\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg height=\"600x600\" width=\"600x600\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/STONE_Exhaust_BMW_S55_F87_M2_Competition_Cat-Back_Valvetronic_Exhaust_-_2_600x600.jpg?v=1583256256\" alt=\"STONE Exhaust BMW S55 F87 M2 Competition Cat-Back Valvetronic Exhaust - ML Performance US\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/STONE_Exhaust_BMW_S55_F87_M2_Competition_Cat-Back_Valvetronic_Exhaust_-_3_600x600.jpg?v=1583256347\" alt=\"STONE Exhaust BMW S55 F87 M2 Competition Cat-Back Valvetronic Exhaust - ML Performance US\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/STONE_Exhaust_BMW_S55_F87_M2_Competition_Cat-Back_Valvetronic_Exhaust_-_4_600x600.jpg?v=1583256388\" alt=\"STONE Exhaust BMW S55 F87 M2 Competition Cat-Back Valvetronic Exhaust - ML Performance US\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/STONE_Exhaust_BMW_S55_F87_M2_Competition_Cat-Back_Valvetronic_Exhaust_-_5_600x600.jpg?v=1583256440\" alt=\"STONE Exhaust BMW S55 F87 M2 Competition Cat-Back Valvetronic Exhaust - ML Performance US\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/STONE_Exhaust_BMW_S55_F87_M2_Competition_Cat-Back_Valvetronic_Exhaust_-_6_600x600.jpg?v=1583256505\" alt=\"STONE Exhaust BMW S55 F87 M2 Competition Cat-Back Valvetronic Exhaust - ML Performance US\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/STONE_Exhaust_BMW_S55_F87_M2_Competition_Cat-Back_Valvetronic_Exhaust_-_7_600x600.jpg?v=1583256554\" alt=\"STONE Exhaust BMW S55 F87 M2 Competition Cat-Back Valvetronic Exhaust - ML Performance US\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/STONE_Exhaust_BMW_S55_F87_M2_Competition_Cat-Back_Valvetronic_Exhaust_-_8_600x600.jpg?v=1583256621\" alt=\"STONE Exhaust BMW S55 F87 M2 Competition Cat-Back Valvetronic Exhaust - ML Performance US\"\u003e\u003c\/div\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 S55 F87 M2 Competition.\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;\"\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\"\u003e\u003c\/div\u003e\n\u003cp\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 \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv 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\"\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;\"\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;\"\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;\"\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\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBMW M Series F87 Coupe M2 Competition (S55) from 2018 - Present\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003eStone Exhaust 2 Year Warranty\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\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 class=\"unreset\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003cspan\u003eAP534\u003c\/span\u003e\u003c\/p\u003e","brand":"Stone Exhaust","offers":[{"title":"Flat Cut Gloss Carbon Fiber (102mm)","offer_id":48679172571361,"sku":"AP534-1020CG","price":4667.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/7608\/4961\/files\/Stone_Exhaust_PORSCHE_718_Cayman_Boxster_SGTS_Cat-Back_Valvetronic_Exhaust_System_2.0T_2.5T_-9_b5ab0861-b45e-4fdc-b9e0-6658a643a47c.png?v=1784835287"},{"product_id":"cts-turbo-cts-exh-dp-0022-turbo-race-3-5-downpipe-bmw-n55-pneumatic-wastegate","title":"CTS TURBO CTS-EXH-DP-0022 TURBO RACE 3.5 DOWNPIPE BMW N55 (PNEUMATIC WASTEGATE)","description":"\u003ch4\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h4\u003e\u003cp\u003eThe CTS Turbo Catless Downpipe BMW N55 (Pneumatic Wastegate)is made to maximize exhaust flow for highest power gains. Do not compromise performance and sound with factory parts unleash your BMW's potential!Designed using the latest in CAD technology; this part is made to fit perfectly in place of your factory downpipe. Manufactured from T304 stainless steel, hand TIG welded and back-purged to ensure years of reliable performance.\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePrecisely designed and tested on a real car in the real world\u003c\/li\u003e\n\u003cp\u003e \t\u003c\/p\u003e\n\u003cli\u003eT304 stainless steel, TIG welded back-purged construction\u003c\/li\u003e\n\u003cp\u003e \t\u003c\/p\u003e\n\u003cli\u003eReplaces restrictive factory downpipe\u003c\/li\u003e\n\u003cp\u003e \t\u003c\/p\u003e\n\u003cli\u003eGreat power upgrade with uncompromising performance\u003c\/li\u003e\n\u003cp\u003e \t\u003c\/p\u003e\n\u003cli\u003eIncredible sporty exhaust sound, subtle when cruising\u003c\/li\u003e\n\u003cp\u003e \t\u003c\/p\u003e\n\u003cli\u003eNo drone with factory exhaust\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTo remove the CEL that will occur, proper tuning software must be used.Use of proper Bootmod3 software upgrade is strongly recommended. For OFF-ROAD use only.\u003cstrong\u003eApplication guide\u003c\/strong\u003e\u003cb\u003eF30 BMW\u003c\/b\u003e335i \u0026amp; 335xi 2012 07\/2013n\u003cb\u003eF20\/F21 BMW\u003c\/b\u003eM135i\u0026amp;M135xi 2012 07\/2013135i or 335i with a production date after 07\/2013 will need the 4 downpipe:\u003c\/p\u003e\u003cdiv\u003e\u003c\/div\u003e\u003cp\u003e\u003c\/p\u003e\u003ctable\u003e\t\t\t\u003ctbody\u003e\n\u003ctr\u003e\t\t\t\u003cth\u003eWeight\u003c\/th\u003e\t\t\t\u003ctd\u003e10 lbs\u003c\/td\u003e\t\t\u003c\/tr\u003e\t\t\t\u003ctr\u003e\t\t\t\u003cth\u003eDimensions\u003c\/th\u003e\t\t\t\u003ctd\u003e30 x 17 x 9 in\u003c\/td\u003e\t\t\u003c\/tr\u003e\t\u003c\/tbody\u003e\n\u003c\/table\u003e \u003cp\u003e \u003c\/p\u003e \u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eFeel free to contact us at info@mlperformanceusa.com should you wish to double check!\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch4\u003eCompatibility Check\u003c\/h4\u003e\u003cp\u003eTo ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your license plate or the last 7 digits of your VIN. Simply enter your car details prior to checkout.\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch4\u003ePart Number\u003c\/h4\u003e\u003cp\u003eCTS-EXH-DP-0022\u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003ch4\u003eMore Information\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eManufactured by\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCTS Turbo\u003c\/p\u003e","brand":"CTS Turbo","offers":[{"title":"Default Title","offer_id":48679674511585,"sku":"CTS-EXH-DP-0022","price":257.59,"currency_code":"USD","in_stock":true}]}],"url":"https:\/\/mlperformanceusa.com\/collections\/23-6-2025-stage-1-tuning-part-2.oembed","provider":"ML Performance USA","version":"1.0","type":"link"}