{"product_id":"stone-exhaust-bmw-b48d-g20-g21-eddy-catalytic-downpipe-inc-320-330i-opf-model","title":"Stone Exhaust BMW B48D Catless\/Decat Downpipe (G20 G21 G22 G23 G26 G29 Z4) for OPF\/GPF – 320i 330i 420i 430i 20i 30i – SUS304 Stainless – A218E","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2\u003eBMW B48D 2.0T de-cat front pipe for OPF and GPF cars - Stone Exhaust - A218E\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Unlock sharper response and a stronger soundtrack from your G series BMW with Stone Exhaust’s high flow turbo outlet pipe. This straight through de-cat front section is designed for OPF and GPF equipped petrol models running the B48 four cylinder, delivering reduced back pressure, quicker spool and a deeper, motorsport inspired tone. Built from SUS304 stainless for long term durability and precise fit, it is a direct bolt-on upgrade that transforms drivability and pairs perfectly with performance software.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhy it stands out\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eEngineered for BMW B48D 2.0T applications - G20 and G21 320i and 330i including xDrive, G22 G23 G26 420i and 430i, and G29 Z4 20i and 30i OPF and GPF models.\u003c\/li\u003e\n    \u003cli\u003eFree flow de-cat design that reduces exhaust restriction for faster turbo response and improved mid range pull.\u003c\/li\u003e\n    \u003cli\u003eSUS304 304 grade stainless construction for strength and corrosion resistance in UK conditions.\u003c\/li\u003e\n    \u003cli\u003e7 axis CNC bending for excellent roundness and smooth internal transitions that maintain gas velocity.\u003c\/li\u003e\n    \u003cli\u003eDual cross welding and mechanical direct spot welds at critical joints for reliability at the turbo flange and high temperature areas.\u003c\/li\u003e\n    \u003cli\u003eCorrectly positioned oxygen sensor boss to promote stable lambda data feedback.\u003c\/li\u003e\n    \u003cli\u003eDirect fitment using OEM style connections - no cutting, no extra fabrication.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eReal world feedback\u003c\/h3\u003e\n  \u003cp\u003e\n    We have fitted this part to customer cars and our own demonstrators with consistently positive results. Expect crisper throttle, earlier boost and a richer exhaust note that still sounds refined on the motorway. Owners looking for a premium cat delete front pipe for B48 powered G series cars rate Stone for quality, fit and finish.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eStone Exhaust manufacturing detail\u003c\/h3\u003e\n  \u003cp\u003e\n    Using 3D scanning and reverse engineering of OEM components, Stone models the ideal tube diameter, bend radii and routing for the B48D platform. Flow, heat and pressure zones are simulated and refined before production to maximise performance and fitment accuracy.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eUp to 98 percent roundness maintained through tight bends for consistent cross section.\u003c\/li\u003e\n    \u003cli\u003eCrisscross and overlapping weld technique improves penetration and joint strength.\u003c\/li\u003e\n    \u003cli\u003eMechanical spot welding delivers repeatable, precise seams.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eVehicle fitment - B48D OPF and GPF petrol\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eBMW Z Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eG29 Z4 sDrive 20i and 30i\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\u003eG20 and G21 320i\u003c\/li\u003e\n    \u003cli\u003eG20 and G21 330i and 330i xDrive\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cstrong\u003eBMW 4 Series\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eG22 420i and 430i including xDrive\u003c\/li\u003e\n    \u003cli\u003eG23 420i and 430i including xDrive\u003c\/li\u003e\n    \u003cli\u003eG26 420i and 430i including xDrive\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003ePart number\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eA218E\u003c\/strong\u003e\u003c\/p\u003e\n\n  \u003ch3\u003eInstallation and support\u003c\/h3\u003e\n  \u003cp\u003e\n    Professional fitting is recommended. MJ Modifications in Warwickshire can supply and install this part and advise on OPF and GPF compatibility, mapping and aftercare. Request a quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\n  \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\u003eEmissions notice\u003c\/h3\u003e\n  \u003cp\u003e\n    Laws vary regarding aftermarket exhaust components that remove or alter catalytic converters or particulate filters. Check and comply with local regulations before purchase and installation. For off road and motorsport use where permitted. The purchaser is responsible for legal compliance.\n  \u003c\/p\u003e\n\n  \u003chr\u003e\n\n  \u003cp\u003e\n    Search terms and related phrases for this product: BMW B48 2.0T de cat pipe, B48D turbo outlet pipe, G series BMW front pipe upgrade, OPF GPF compatible down pipe, cat delete front section, race down pipe for 320i 330i, performance exhaust front pipe for 420i 430i, Z4 20i 30i de cat, stainless 304 down pipe, high flow turbo downpipe, BMW petrol particulate filter models, straight through down pipe, remap ready front pipe, stage 2 hardware B48, G20 G21 G22 G23 G26 G29 exhaust upgrade, Stone Exhaust A218E UK.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Stone Exhaust","offers":[{"title":"Default Title","offer_id":56008717271426,"sku":null,"price":1559.04,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/StoneExhaustBMWB48D_B46DG20G29G30CatlessDownpipes_Inc.320_330i_530i_Z420i_Z430iOPFModel_-5-2_1024x1024_2x_300fe3f1-b0b9-4d34-8dd0-8ced0ff3b137.webp?v=1764091274","url":"https:\/\/mjmodifications.co.uk\/products\/stone-exhaust-bmw-b48d-g20-g21-eddy-catalytic-downpipe-inc-320-330i-opf-model","provider":"MJ Modifications","version":"1.0","type":"link"}