{"product_id":"dinan-free-flow-stainless-exhaust-with-black-tips-for-bmw-f33-f36-440i","title":"Dinan Free Flow Stainless Exhaust for BMW 440i 4 Series F33 Convertible \u0026 F36 Gran Coupe (2017-2018) – B58 Performance Axle-Back\/Cat-Back Style Rear Silencer\/Back Box – T304, Helmholtz Drone-Reducing, Black 89mm (3.5\") Tips","description":"\u003cdiv\u003e\n  \u003ch2\u003eDinan stainless performance rear section for BMW 440i F33 cabriolet and F36 Gran Coupé\u003c\/h2\u003e\n\n  \u003cp\u003eGive your B58-powered 440i the tone, quality and road manners it deserves. This Dinan stainless performance system is tailored for the 2017 to 2018 BMW 4 Series F33 Convertible and F36 Gran Coupé, delivering a deeper, richer soundtrack with crisp crackles on overrun while staying calm and comfortable at motorway speeds.\u003c\/p\u003e\n\n  \u003cp\u003eThanks to tuned resonator technology using a Helmholtz design, the cabin remains pleasantly quiet at steady cruise with no annoying boom. Open the throttle and the straight six sings with a refined, motorsport-inspired note that never sounds cheap or raspy. It is the ideal upgrade if you want a grown-up sports sound with daily-drive civility.\u003c\/p\u003e\n\n  \u003ch3\u003eKey reasons drivers choose this upgrade\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eEnhanced flow path that supports tuning potential and sharper throttle response\u003c\/li\u003e\n    \u003cli\u003eRich, bassy tone at idle that builds to an aggressive yet tasteful roar under load\u003c\/li\u003e\n    \u003cli\u003eDrone control via Helmholtz resonator for relaxed long-distance cruising\u003c\/li\u003e\n    \u003cli\u003e304-grade 16 gauge stainless construction for excellent longevity and corrosion resistance\u003c\/li\u003e\n    \u003cli\u003eTwin 89 mm 3.5 inch black ceramic-coated tailpipe finishers for a stealth, OEM plus appearance\u003c\/li\u003e\n    \u003cli\u003eDirect bolt-on fit using factory mounting points for neat alignment and straightforward installation\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eOur workshop notes\u003c\/h3\u003e\n  \u003cp\u003eWe have fitted this Dinan system on multiple customer 440i cars and the feedback has been consistently positive. Owners love the premium tone, the lack of cabin drone and the spot-on tip alignment. It looks factory fresh, sounds properly engineered and elevates the driving experience without compromise.\u003c\/p\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW 440i F33 Convertible - 2017 to 2018\u003c\/li\u003e\n    \u003cli\u003eBMW 440i F36 Gran Coupé - 2017 to 2018\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eProfessional fitting\u003c\/h3\u003e\n  \u003cp\u003eWant it installed perfectly first time? Book expert 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\u003eSearch-friendly phrases\u003c\/h3\u003e\n  \u003cp\u003eBMW 440i sports exhaust upgrade, BMW F33 cabriolet exhaust system, BMW F36 Gran Coupé 440i rear silencer, B58 440i sound upgrade, Dinan 440i cat back style system, BMW 4 Series 440i black 89mm tailpipes, 3.5 inch ceramic tips 440i, drone reduced exhaust for BMW 440i, Helmholtz resonator BMW B58, T304 stainless 440i exhaust UK, BMW 440i back box upgrade, performance exhaust for BMW 4 Series F3x, Dinan 440i rear muffler UK, stealth black tailpipe finishers 440i, BMW 440i exhaust note upgrade.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Performance M","offers":[{"title":"Default Title","offer_id":55975109755266,"sku":"eahb50yoew","price":1567.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/D660-0077-BLK__51118.1535096947.jpg?v=1763320544","url":"https:\/\/mjmodifications.co.uk\/products\/dinan-free-flow-stainless-exhaust-with-black-tips-for-bmw-f33-f36-440i","provider":"MJ Modifications","version":"1.0","type":"link"}