{"product_id":"stone-exhaust-bmw-n13-f20-f30-catless-downpipes-inc-116i-118i-316i","title":"Stone Exhaust BMW N13\/N13B16 Catless\/Decat Downpipe (Catalyst Delete Turbo Outlet\/Elbow) - F20 F21 116i 118i 120i, F30 F31 316i | 1 Series \u0026 3 Series High-Flow Performance Race De-Cat | A213P","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003cdiv\u003e\n    \n    \u003ch2\u003eBMW N13 Catalyst Delete Pipe for F20 F21 116i 118i 120i and F30 F31 316i | Stone Exhaust A213P\u003c\/h2\u003e\n    \n    \u003cp\u003e\n      Transform throttle response and turbo spool with this high-flow catalyst delete pipe designed for the BMW N13 petrol turbo engine. Built by Stone Exhaust for the 1 Series F20 F21 116i 118i 120i and 3 Series F30 F31 316i, this performance turbo outlet upgrade reduces back pressure, sharpens mid-range punch and adds a purposeful soundtrack. It is a direct replacement that uses factory mounting points for a clean, bolt-on install.\n    \u003c\/p\u003e\n    \n    \u003ch3\u003eKey advantages\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003eDesigned specifically for BMW N13-powered 1 Series and 3 Series models: 116i, 118i, 120i and 316i\u003c\/li\u003e\n      \u003cli\u003eIntegrated flex joint helps manage heat cycles and vibration to minimise the risk of cracking\u003c\/li\u003e\n      \u003cli\u003eReinforced turbo flange with crisscross welds for strength and long-term reliability\u003c\/li\u003e\n      \u003cli\u003eOne-piece bend path promotes uninterrupted gas velocity for quicker turbo response\u003c\/li\u003e\n      \u003cli\u003eMachine welding for consistent penetration and smooth internal finishes\u003c\/li\u003e\n      \u003cli\u003eDeveloped with 3D scanning and reverse engineering for precise routing and fit\u003c\/li\u003e\n      \u003cli\u003eRobotic spot welding for accuracy and repeatable quality\u003c\/li\u003e\n      \u003cli\u003eOEM-style fitment for straightforward installation on the N13 turbo system\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003ch3\u003eEngineered for flow and durability\u003c\/h3\u003e\n    \u003cp\u003e\n      Stone Exhaust maps the factory assembly with detailed 3D scanning, then refines diameter, path and bend angles to maximise flow while respecting clearances. Production uses a 7 axis CNC bending process that achieves approximately 98% roundness and limits outer bore wear to around 25% at 180 degrees. Coupled with reinforced flange welding and precise robotic spot welds, the result is a robust, high-flow de-cat pipe that installs neatly and performs consistently.\n    \u003c\/p\u003e\n    \n    \u003ch3\u003eProven on customer cars\u003c\/h3\u003e\n    \u003cp\u003e\n      We have run this Stone Exhaust N13 de-cat on customer vehicles and our own builds. Feedback is consistently positive on fit quality, improved response and the more assertive exhaust tone. If you want a cleanly engineered turbo down pipe solution that wakes the car up without drama, this is the one we recommend.\n    \u003c\/p\u003e\n    \n    \u003ch3\u003eCompatibility\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eEngine:\u003c\/strong\u003e BMW N13\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eBMW 1 Series\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eF20 116i \/ 118i \/ 120i (2010+)\u003c\/li\u003e\n      \u003cli\u003eF21 116i (2011+) \/ 118i \/ 120i (2012+)\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003e\u003cstrong\u003eBMW 3 Series\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003eF30 316i (2012+)\u003c\/li\u003e\n      \u003cli\u003eF30 LCI 316i (2015+)\u003c\/li\u003e\n      \u003cli\u003eF31 316i (2011+)\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003ch3\u003ePart number\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eA213P\u003c\/strong\u003e\u003c\/p\u003e\n    \n    \u003ch3\u003eManufacturer and warranty\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Stone Exhaust\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 2 Year Stone Exhaust Warranty\u003c\/p\u003e\n    \n    \u003ch3\u003eProfessional fitting\u003c\/h3\u003e\n    \u003cp\u003e\n      Want it installed properly first time? Book expert fitting with MJ Modifications in Warwickshire. Email \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e for a quotation and availability.\n    \u003c\/p\u003e\n    \n    \u003ch3\u003eImportant note\u003c\/h3\u003e\n    \u003cp\u003e\n      This catalyst removal pipe is intended for off-road or motorsport use where permitted. Please check local regulations before purchase and installation.\n    \u003c\/p\u003e\n    \n    \u003ch3\u003eSearch-friendly terms\u003c\/h3\u003e\n    \u003cp\u003e\n      BMW N13 decat pipe, BMW 116i decat, 118i turbo down pipe, 120i catalyst delete, 316i N13 turbo outlet, F20 performance exhaust pipe, F21 turbo pipe, F30 316i de-cat, F31 exhaust upgrade, BMW 1 Series turbo pipe upgrade, BMW 3 Series N13 exhaust mod, high flow turbo outlet pipe, race down pipe N13, Stone Exhaust A213P, BMW 116i 118i 120i de-cat pipe, BMW 316i down pipe upgrade, F20 F21 F30 F31 decat solution, BMW N13 turbo elbow, performance de-cat for BMW petrol turbo.\n    \u003c\/p\u003e\n    \n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Stone Exhaust","offers":[{"title":"Default Title","offer_id":55977885598082,"sku":null,"price":772.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/BMWN13F20F30_CatlessDownpipe2_720x_9d5ca162-c8ab-4f36-8b03-5abd195e50a6.webp?v=1763377167","url":"https:\/\/mjmodifications.co.uk\/products\/stone-exhaust-bmw-n13-f20-f30-catless-downpipes-inc-116i-118i-316i","provider":"MJ Modifications","version":"1.0","type":"link"}