{"product_id":"stone-exhaust-bmw-n20-f20-f22-f30-f32-eddy-catalytic-downpipe-inc-120i-220i-228i-320i-328i-420i-428i","title":"Stone","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2 style=\"text-align:center; color:#ff2a00;\"\u003e\u003cstrong\u003eStone Exhaust Eddy Catalytic Sport Cat Front Pipe\u003c\/strong\u003e\u003c\/h2\u003e\n  \u003ch3 style=\"text-align:center;\"\u003eFor BMW N20 2.0 Turbo Petrol – F20 F21 F22 F23 F30 F31 F32 F33 F36 – 120i 220i 228i 320i 328i 420i 428i\u003c\/h3\u003e\n\n  \u003cp\u003eUnlock smoother boost, crisper throttle and stronger mid‑range with Stone Exhaust’s Eddy Catalytic sport catalyst front pipe for the BMW N20. This high‑flow performance catalyst delivers the flow your turbo wants while retaining emissions control, giving you rapid spool and effortless pull across the rev range without the drama of warning lights when set up correctly.\u003c\/p\u003e\n\n  \u003cp\u003eCrafted from corrosion resistant 304 grade stainless with a true 3 inch – 76.2 mm primary, the Eddy Catalytic core uses a patented vortex design to intelligently manage velocity and back pressure. At light load it behaves like a finer cell catalyst for clean tailpipe gases. At higher load it opens up like a freer flowing race cat for maximum performance. The result is a road friendly upgrade that pairs brilliantly with a stage 1 or stage 2 tune and works seamlessly with both factory and aftermarket cat‑back systems.\u003c\/p\u003e\n\n  \u003cp\u003eWe have installed this on multiple customer N20 cars across 1 Series, 2 Series, 3 Series and 4 Series platforms and the feedback is the same every time: faster turbo response, punchier acceleration and a smoother top end. Build quality is outstanding, welds are neat and fitment is spot on.\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eHighlights\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePerformance catalyst for BMW N20 2.0T – a powerful upgrade over the restrictive factory front pipe\u003c\/li\u003e\n    \u003cli\u003eEddy Catalytic vortex core for high flow with clean emissions – designed to help avoid CEL issues\u003c\/li\u003e\n    \u003cli\u003eO2 sensor placement optimised for stable readings and consistent drivability\u003c\/li\u003e\n    \u003cli\u003e3 inch 76.2 mm tubing in premium SUS304 stainless for durability and heat resistance\u003c\/li\u003e\n    \u003cli\u003eCNC mandrel bends maintain roundness for uninterrupted gas speed\u003c\/li\u003e\n    \u003cli\u003eReinforced turbo flange with dual cross welding for long term reliability\u003c\/li\u003e\n    \u003cli\u003eDirect fit to OEM turbo and exhaust – plug and play, no cutting\u003c\/li\u003e\n    \u003cli\u003eMOT friendly and Euro 6 oriented design\u003c\/li\u003e\n    \u003cli\u003eWorks with xDrive and LCI facelift models\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eEngineering that makes the difference\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003e3D development:\u003c\/strong\u003e Each pipe is reverse engineered from factory components using 3D scanning, then refined to improve diameter transitions, routing and bend angles for the N20’s turbo outlet.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003ePrecision bending:\u003c\/strong\u003e 7‑axis CNC bending delivers excellent roundness even at tight radii, reducing turbulence compared with multi‑piece or crushed bends.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWelding quality:\u003c\/strong\u003e Overlapped and criss‑cross weld techniques at high‑heat junctions add strength and help the assembly handle repeated thermal cycles.\u003c\/p\u003e\n\n  \u003cp\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 BMW N20 sport cat front pipe - 3D scanning\"\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/bending.jpg?v=1572739395\" alt=\"Stone Exhaust precision CNC bending - stainless 304\"\u003e\u003c\/p\u003e\n  \u003cp\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 welding quality - turbo outlet pipe\"\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1272\/9301\/files\/welding_1024x1024.jpg?v=1579900236\" alt=\"Stone Exhaust stainless welds - performance catalyst\"\u003e\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eFitment – BMW N20 2.0T petrol\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003e1 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eF20 F21 120i 2010–2015\u003c\/li\u003e\n    \u003cli\u003eF20 LCI 120i 2014–2018\u003c\/li\u003e\n    \u003cli\u003eF21 LCI 120i 2014–2018\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cstrong\u003e2 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eF22 220i 2012–2017, 228i 2012–2016, 228i xDrive 2013–2016\u003c\/li\u003e\n    \u003cli\u003eF23 220i 2014–2017, 228i 2014–2016, 228i xDrive 2014–2016\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cstrong\u003e3 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eF30 320i, 328i, 328i xDrive 2011–2015\u003c\/li\u003e\n    \u003cli\u003eF30 LCI 320i, 328i 2014–2018\u003c\/li\u003e\n    \u003cli\u003eF31 320i, 328i 2011–2015\u003c\/li\u003e\n    \u003cli\u003eF31 320i xDrive, 328i xDrive 2012–2015\u003c\/li\u003e\n    \u003cli\u003eF31 LCI 328i xDrive 2014–2016\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cstrong\u003e4 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eF32 420i, 420i xDrive 2013–2017, 428i, 428i xDrive 2012–2016\u003c\/li\u003e\n    \u003cli\u003eF33 420i, 428i 2013–2017, 428i xDrive 2013–2016\u003c\/li\u003e\n    \u003cli\u003eF36 420i, 420i xDrive 2013–2017, 428i, 428i xDrive 2013–2016\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDirect bolt‑on using factory mounting points and hangers\u003c\/li\u003e\n    \u003cli\u003eNo cutting or permanent modification required\u003c\/li\u003e\n    \u003cli\u003eProfessional fitting recommended\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eWant it fitted correctly first time? Book installation with MJ Modifications in Warwickshire. Request a quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eCompatibility check\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003eWe will verify fitment before dispatch. Add your UK registration or the last 7 of your VIN at checkout so we can confirm your exact model and build date.\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003ePart number\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eA205E\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003eStone Exhaust\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003eStone Exhaust 2 year warranty\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eVideo\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eBMW F36 N20 420i Full Exhaust System\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/J_4rDcujVCM\" title=\"Stone Exhaust BMW N20 F36 420i Full Exhaust System\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\n  \u003ch3\u003e\u003cstrong\u003eSearch terms customers use\u003c\/strong\u003e\u003c\/h3\u003e\n  \u003cp\u003eBMW N20 sport cat, BMW N20 front pipe, N20 turbo outlet pipe, BMW 120i sport catalyst, 220i performance catalyst, 228i high flow cat, 320i sport catalytic converter, 328i sports cat pipe, 420i high flow catalytic converter, 428i sport cat down pipe, F20 F21 F22 F23 F30 F31 F32 F33 F36 2.0T exhaust upgrade, stainless 304 3 inch 76.2 mm cat pipe, Euro 6 MOT compliant catalyst, CEL safe sports cat, direct fit bolt on N20 front section, BMW F series turbo petrol exhaust upgrade, UK BMW tuning parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Stone Exhaust","offers":[{"title":"Default Title","offer_id":56005718737282,"sku":null,"price":1401.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/Stone_Exhaust_BMW_N20_F20_F22_F30_F32_Eddy_Catalytic_Downpipe_Inc.120i_220i_228i_320i_328i_420i_428i_-1_1946x_f5eb54c0-63b7-48a6-8816-302576ab6417.png?v=1764021818","url":"https:\/\/mjmodifications.co.uk\/products\/stone-exhaust-bmw-n20-f20-f22-f30-f32-eddy-catalytic-downpipe-inc-120i-220i-228i-320i-328i-420i-428i","provider":"MJ Modifications","version":"1.0","type":"link"}