{"product_id":"stone-exhaust-bmw-n20-f25-f26-catless-downpipe-inc-x3-20i-xdrive-x4-20i-xdrive-x3-28i-xdrive-x4-28i-xdrive","title":"Stone Exhaust BMW N20 2.0T Catless Downpipe – Decat\/De-Cat \u0026 Primary Cat Delete Front Pipe, High-Flow Turbo Outlet Straight Pipe – X1 E84, Z4 E89, X3 F25 20i\/28i xDrive, X4 F26 20i\/28i xDrive – Stage 2 Hardware – Part A206XP","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \n  \u003ch2\u003eHigh-flow de-cat front pipe for BMW N20 2.0T – X1 E84, Z4 E89, X3 F25 20i 28i xDrive, X4 F26 20i 28i xDrive – Part A206XP\u003c\/h2\u003e\n  \n  \u003cp\u003eTransform the way your N20-powered BMW breathes. This Stone Exhaust straight-through turbo down pipe deletes the primary catalyst to minimise restriction, speed up turbo spool and unlock a sharper, more responsive drive with a deeper, motorsport-inspired soundtrack. If you are building a fast-road or track-only BMW and want a proven exhaust upgrade that fits like factory and flows like a race part, this is the front section to choose.\u003c\/p\u003e\n  \n  \u003cp\u003eWe have fitted and run this Stone Exhaust de-cat on our own cars and for many customers. Feedback is consistently positive on fitment, quality and the immediate improvement in throttle response. For drivers searching phrases like BMW N20 performance down pipe, BMW 2.0 turbo decat, X3 F25 20i upgrade pipe, X4 F26 28i straight pipe, Z4 E89 28i turbo outlet, X1 E84 20i front pipe, this A206XP unit is the enthusiast favourite.\u003c\/p\u003e\n  \n  \u003ch3\u003eWhy this race down pipe stands out\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eEngineered for BMW N20 2.0 turbo petrol – X1 E84 20i 28i, Z4 E89 20i 28i, X3 F25 20i 28i including xDrive, X4 F26 20i 28i xDrive.\u003c\/li\u003e\n    \u003cli\u003eComputational flow analysis and 3D development focused on velocity, bend radius and routing for maximum gas speed and minimal back pressure.\u003c\/li\u003e\n    \u003cli\u003eOne-piece mandrel bends reduce unnecessary welds inside the tube, keeping the bore smooth for superior flow.\u003c\/li\u003e\n    \u003cli\u003eIntegrated flex section manages thermal expansion to help prevent cracking during extreme heat cycles.\u003c\/li\u003e\n    \u003cli\u003eTurbo flange reinforced with crisscross and overlapping weld techniques for strength under 800 to 1100 degrees Celsius thermal stress.\u003c\/li\u003e\n    \u003cli\u003eRobotic precision welding for consistent penetration and durability that looks as good as it performs.\u003c\/li\u003e\n    \u003cli\u003e7-axis CNC mandrel bending maintains up to 98 percent roundness, even through tight radii, for uninterrupted flow.\u003c\/li\u003e\n    \u003cli\u003eReverse engineered from the OE part with 3D scanning for a true factory-like fit using original mounting points.\u003c\/li\u003e\n    \u003cli\u003eDirect replacement front pipe – no cutting required, installs with standard hardware positions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eDesigned to deliver response and sound\u003c\/h3\u003e\n  \u003cp\u003eStone Exhaust invests heavily in R\u0026amp;D, combining 3D scanning of the OEM path with flow velocity software and thermal pressure simulation. The result is a precisely formed primary cat delete that reduces restriction, promotes quicker turbocharger response and enhances the exhaust tone without compromising fitment. Accuracy tolerances are under 0.025 mm, with exceptional roundness and a reinforced turbo connection designed to endure repeated heat cycles.\u003c\/p\u003e\n  \n  \u003ch3\u003eFitment and compatibility\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eEngine:\u003c\/strong\u003e BMW N20 2.0 turbo petrol\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eBMW X Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eE84 X1 20i, 28i\u003c\/li\u003e\n    \u003cli\u003eF25 X3 20i, 28i, including xDrive\u003c\/li\u003e\n    \u003cli\u003eF26 X4 20i xDrive, 28i xDrive\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cstrong\u003eBMW Z Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eE89 Z4 20i, 28i\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003ePart number\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eA206XP\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eManufacturer\u003c\/h3\u003e\n  \u003cp\u003eStone Exhaust\u003c\/p\u003e\n  \n  \u003ch3\u003eWarranty\u003c\/h3\u003e\n  \u003cp\u003eStone Exhaust 2-year warranty.\u003c\/p\u003e\n  \n  \u003ch3\u003eProfessional installation\u003c\/h3\u003e\n  \u003cp\u003eWant a seamless fit and finish first time. Book fitting 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\u003eSEO-friendly search phrases customers use\u003c\/h3\u003e\n  \u003cp\u003eBMW N20 de-cat front pipe, BMW 2.0T turbo down pipe upgrade, BMW X1 E84 20i 28i exhaust mod, BMW Z4 E89 20i 28i race down pipe, BMW X3 F25 20i 28i xDrive turbo outlet, BMW X4 F26 20i 28i xDrive de-cat pipe, straight-through down pipe, primary cat delete, high flow front section, track-only exhaust, stage 2 hardware N20, UK BMW tuning parts, performance exhaust front pipe, A206XP Stone Exhaust.\u003c\/p\u003e\n  \n  \u003ch3\u003eImportant notice\u003c\/h3\u003e\n  \u003cp\u003eThis de-cat product is intended for off-road, closed-course, track or motorsport use only where permitted. Please check local laws and regulations before purchase and installation.\u003c\/p\u003e\n  \n  \u003ch3\u003eR\u0026amp;D images\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003e3D scanning and reverse engineering\u003c\/strong\u003e\u003c\/p\u003e\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 3D scanning and reverse engineering for BMW N20 down pipe\"\u003e\u003c\/p\u003e\n  \n  \u003cp\u003e\u003cstrong\u003e7-axis CNC bending\u003c\/strong\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 CNC mandrel bending process\"\u003e\u003c\/p\u003e\n  \n  \u003cp\u003e\u003cstrong\u003ePrecision welding\u003c\/strong\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=\"Reinforced turbo flange welding by Stone Exhaust\"\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_-_2_1024x1024.jpg?v=1572828178\" alt=\"Robotic spot welding for consistent quality\"\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eVideo\u003c\/h3\u003e\n  \u003cdiv class=\"video-wrapper\"\u003e\n    \u003ciframe width=\"1195\" height=\"672\" src=\"https:\/\/www.youtube.com\/embed\/VGY4fmbXfHI\" title=\"BMW N20 F26 X4 28i xDrive with Stone Exhaust de-cat turbo down pipe and valved cat-back sound\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\n  \u003c\/div\u003e\n  \n\u003c\/div\u003e","brand":"Stone Exhaust","offers":[{"title":"Default Title","offer_id":56005661688194,"sku":null,"price":772.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/Logo1.5_1946x_437d18d8-6ac5-4719-81bf-ca5a997f66e9.jpg?v=1764021275","url":"https:\/\/mjmodifications.co.uk\/products\/stone-exhaust-bmw-n20-f25-f26-catless-downpipe-inc-x3-20i-xdrive-x4-20i-xdrive-x3-28i-xdrive-x4-28i-xdrive","provider":"MJ Modifications","version":"1.0","type":"link"}