{"product_id":"stone-exhaust-bmw-b48-g30-g31-520i-cat-back-valvetronic-exhaust-2","title":"Stone Exhaust Valved Cat-Back for BMW 530i 5 Series G30\/G31 B48 2.0T (2015-2019) | Sports Exhaust Catback, OEM Valve Integration | OPF\/PPF Delete | Fits 530i xDrive Touring \u0026 Saloon | AP527B","description":"\u003cdiv class=\"rte\"\u003e\n  \u003ch2\u003eStone Performance System for BMW 530i G30 G31 B48 with integrated valve control\u003c\/h2\u003e\n  \u003cp\u003eTransform your G30 saloon or G31 estate with Stone’s valve-controlled rear system for the 2.0 turbo B48. This premium upgrade delivers a richer, deeper soundtrack with zero cabin boom, sharper throttle response and superb everyday manners thanks to factory valve integration. We run this setup on our own builds and customer cars and the feedback is consistently excellent.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003ePart number:\u003c\/strong\u003e AP527B – designed to be used with the original rear bumper.\u003c\/p\u003e\n\n  \u003ch3\u003eWhy enthusiasts choose this Stone system\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eFactory valve integration – ECU-managed valves for seamless quiet-to-sport transition\u003c\/li\u003e\n    \u003cli\u003eOptional Stone Valvetronic dual-valve control with remote for extra adjustability\u003c\/li\u003e\n    \u003cli\u003eOBDII plug-in controller for straightforward integration\u003c\/li\u003e\n    \u003cli\u003eOne-piece layout for optimal gas flow and durability\u003c\/li\u003e\n    \u003cli\u003eMachine welding and direct spot welding for strength and longevity\u003c\/li\u003e\n    \u003cli\u003e3D scanned and reverse engineered for 100 percent OEM-level fit\u003c\/li\u003e\n    \u003cli\u003eDeveloped on the dyno for real performance and flow improvements\u003c\/li\u003e\n    \u003cli\u003eNo drone at motorway speeds – refined when cruising, aggressive when opened up\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFitment\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW 5 Series G30 530i and 530i xDrive – 2015 to 2019\u003c\/li\u003e\n    \u003cli\u003eBMW 5 Series G31 530i Touring and 530i xDrive Touring – 2016 to 2019\u003c\/li\u003e\n    \u003cli\u003eB48 2.0 turbo petrol applications\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eHow it sounds and drives\u003c\/h3\u003e\n  \u003cp\u003eCold starts and full throttle deliver a sporty, characterful note. Close the valves and it settles into a calm, refined tone for daily use. Flow-optimised routing and precise bends improve scavenging for a crisper response from your B48 without unwanted resonance in the cabin.\u003c\/p\u003e\n\n  \u003ch3\u003eOPF solution included\u003c\/h3\u003e\n  \u003cp\u003eRunning a vehicle with a particulate filter No problem. An OPF delete solution is included at no extra cost to avoid warning lights. No ECU coding is required to clear OPF-related errors.\u003c\/p\u003e\n\n  \u003ch3\u003eEngineered for accuracy, built for reliability\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e3D scanning and CAD reverse engineering of the OEM system for exact alignment\u003c\/li\u003e\n    \u003cli\u003e7-axis CNC bending for exceptional roundness and consistent internal diameter\u003c\/li\u003e\n    \u003cli\u003eCrisscross and overlapping welds at heat-critical joints for long-term durability\u003c\/li\u003e\n    \u003cli\u003eMechanical welding arms with direct spot welding for consistent penetration\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eOur experience\u003c\/h3\u003e\n  \u003cp\u003eWe have installed this Stone system on multiple G30 and G31 530i builds. Customers love the switchable character, the quality of the welds and the perfect fit. It is a genuine upgrade for sound, response and everyday refinement.\u003c\/p\u003e\n\n  \u003ch3\u003eProfessional installation\u003c\/h3\u003e\n  \u003cp\u003eWant it fitted correctly first time Book in with MJ Modifications in Warwickshire. Email \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e for a fitting quote and availability.\u003c\/p\u003e\n\n  \u003ch3\u003eWarranty\u003c\/h3\u003e\n  \u003cp\u003eStone Exhaust 2 year warranty.\u003c\/p\u003e\n\n  \u003ch3\u003eWatch and listen\u003c\/h3\u003e\n  \u003cdiv style=\"max-width: 800px;\"\u003e\n    \u003ciframe width=\"100%\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/rghx_OoE5LQ\" title=\"Stone Exhaust BMW G30 B48 530i Sound and Performance\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eSearch-friendly terms\u003c\/h3\u003e\n  \u003cp\u003eBMW 530i sports exhaust UK, BMW G30 530i performance system, G31 530i Touring valve controlled exhaust, B48 turbo exhaust upgrade, BMW 5 Series 2.0T exhaust UK, BMW 530i xDrive exhaust system, ECU valve exhaust BMW 530i, OPF delete solution BMW 530i, OPF error remover BMW B48, Stone performance exhaust 530i, back box upgrade BMW 5 Series, BMW 530i G30 resonant-free exhaust, plug-in OBD exhaust controller BMW, UK BMW 5er 530i sports system, G30 G31 B48 cat back replacement, BMW 530i touring exhaust sound upgrade.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Stone Exhaust","offers":[{"title":"Flat Cut Gloss Carbon Fiber (82mm)","offer_id":55977881960834,"sku":null,"price":2427.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/1020CG_FlatCutGlossCarbonFibre_102mm-2_1024x1024_2x_14ee0200-bd45-427b-8f12-7887d5c3f763.webp?v=1763377156","url":"https:\/\/mjmodifications.co.uk\/products\/stone-exhaust-bmw-b48-g30-g31-520i-cat-back-valvetronic-exhaust-2","provider":"MJ Modifications","version":"1.0","type":"link"}