{"product_id":"milltek-sport-resonated-quieter-secondary-cat-back-exhaust-bmw-g8x-m3m4","title":"Milltek Sport Resonated (Quieter) Secondary Cat Back Exhaust – BMW G8X M3\/M4 (2020 on)","description":"\u003ch6\u003eDescription\u003c\/h6\u003e\n\u003cp\u003eThe Milltek Sport secondary cat back exhaust for the BMW G8X M3\/M4 (2020 on) replaces everything behind the secondary catalyst. The factory catalysts stay in place. It is built from 3.15\" (80mm) T304 stainless steel pipework by Milltek Sport in Derbyshire, and comes with the clamps, gaskets and hangers it needs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eResonated (Quieter).\u003c\/strong\u003e Resonated keeps a centre resonator, so the system is deeper and more refined, with less drone at motorway speed. It is the quietest Milltek option.\u003c\/p\u003e\n\u003ch3\u003eFrom Milltek Sport\u003c\/h3\u003e\u003cp\u003eFrom late 2018, many vehicles have been manufactured with a Gasoline\/Otto Particulate Filter to reduce further the emissions from the vehicle. The Milltek Sport Particulate Filter-Back range is designed to compensate for the sound reducing qualities from the particulate filter and significantly improve the sound aesthetic of the exhaust system. \u003c\/p\u003e\n\u003ch3\u003eChoosing your options\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Polished is bright stainless steel. Cerakote Black is a heat-resistant ceramic coating in satin black. Brushed Titanium is a titanium trim with a brushed finish. Burnt Titanium is titanium heat-treated to a blue-purple finish. Carbon Fibre JET trims have a carbon outer sleeve. GT trims are round, double-skinned tailpipes; the number is the outer diameter in millimetres.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eChassis Brace Plate\u003c\/li\u003e\n\u003cli\u003eLH Valved Link \u0026amp; Outlet Pipe\u003c\/li\u003e\n\u003cli\u003eRH Valved Link \u0026amp; Outlet Pipe\u003c\/li\u003e\n\u003cli\u003eRear Silencer\u003c\/li\u003e\n\u003cli\u003eLH Silencer Bypass (to OE GPF)\u003c\/li\u003e\n\u003cli\u003eRH Silencer Bypass (to OE GPF)\u003c\/li\u003e\n\u003cli\u003e4 × tailpipe trims in your chosen finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCheck before you order\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThe factory exhaust has to be cut to remove it.\u003c\/li\u003e\n\u003cli\u003eFor cars fitted with a petrol particulate filter (GPF\/OPF) from the factory.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRoad use\u003c\/h3\u003e\u003cp\u003eThis secondary cat back exhaust keeps the factory catalytic converter, so emissions are unaffected. Systems that are not EC approved are louder than the road noise limits allow and are sold for motorsport and off-road use.\u003c\/p\u003e\n\u003ch3\u003eLead time\u003c\/h3\u003e\u003cp\u003eMilltek Sport make every system in Derbyshire. The dispatch estimate next to the price is updated every morning from Milltek's live stock and build dates, and changes with the option you pick. If there is any delay on your order we will tell you within 24 hours.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/lJQsJMSiDKM\" title=\"Milltek Sport BMW G8X M3\/M4 exhaust sound\" loading=\"lazy\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/UU-cS6KwbLo\" title=\"Milltek Sport BMW G8X M3\/M4 exhaust sound\" loading=\"lazy\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch6\u003eProduct Details\u003c\/h6\u003e\n\u003cdiv\u003e\n\u003cb\u003eBrand: \u003c\/b\u003eMilltek Sport\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eSystem type: \u003c\/b\u003eSecondary Cat Back Exhaust\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eSound level: \u003c\/b\u003eResonated (Quieter)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003ePipe bore: \u003c\/b\u003e3.15\" (80mm)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eMaterial: \u003c\/b\u003eT304 stainless steel\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eEC approved: \u003c\/b\u003eNo\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eECU remap needed: \u003c\/b\u003eNo\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFitting time: \u003c\/b\u003e1.5–2 hours (Milltek's figure, including removing the factory part)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShipping: \u003c\/b\u003e1 box, 150 × 45 × 36 cm, about 28 kg\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eMade in: \u003c\/b\u003eDerbyshire, United Kingdom\u003c\/div\u003e\n\u003ch6\u003eVehicle Fitment\u003c\/h6\u003e\u003ctable style=\"width:100%; border-collapse:collapse; font-size:14px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003cth\u003eEngine code\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e3 Series\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003e480 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 B\u003c\/td\u003e\n\u003ctd\u003e2020–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e3 Series\u003c\/td\u003e\n\u003ctd\u003eM3 Competition\u003c\/td\u003e\n\u003ctd\u003e510 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2020–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e3 Series\u003c\/td\u003e\n\u003ctd\u003eM3 Competition xDrive\u003c\/td\u003e\n\u003ctd\u003e510 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2021–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e3 Series\u003c\/td\u003e\n\u003ctd\u003eM3 Competition xDrive\u003c\/td\u003e\n\u003ctd\u003e530 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2024–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e3 Series\u003c\/td\u003e\n\u003ctd\u003eM3 CS xDrive\u003c\/td\u003e\n\u003ctd\u003e551 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2023–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e3 Series\u003c\/td\u003e\n\u003ctd\u003eM3 Competition xDrive\u003c\/td\u003e\n\u003ctd\u003e510 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2022–2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e3 Series\u003c\/td\u003e\n\u003ctd\u003eM3 Competition xDrive\u003c\/td\u003e\n\u003ctd\u003e530 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2024–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e3 Series\u003c\/td\u003e\n\u003ctd\u003eM3 CS xDrive\u003c\/td\u003e\n\u003ctd\u003e551 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2025–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003ctd\u003e480 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 B\u003c\/td\u003e\n\u003ctd\u003e2020–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003eM4 Competition\u003c\/td\u003e\n\u003ctd\u003e510 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2020–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003eM4 Competition M xDrive\u003c\/td\u003e\n\u003ctd\u003e510 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2021–2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003eM4 Competition M xDrive\u003c\/td\u003e\n\u003ctd\u003e530 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2024–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003eM4 CS xDrive\u003c\/td\u003e\n\u003ctd\u003e551 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2024–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e4 Series\u003c\/td\u003e\n\u003ctd\u003eM4 CSL\u003c\/td\u003e\n\u003ctd\u003e551 hp\u003c\/td\u003e\n\u003ctd\u003eS58 B30 A\u003c\/td\u003e\n\u003ctd\u003e2022–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eMilltek list this part for: 3 Series \u0026gt; G80\/G81 M3 \u0026amp; M3 Competition S58 3.0 Turbo (OPF\/GPF Equipped Cars Only) inc Touring \u0026amp; XDrive Models \u0026gt; 2020 and Later; 4 Series \u0026gt; G82 M4 \u0026amp; M4 Competition S58 3.0 Turbo (OPF\/GPF Equipped Cars Only) \u0026gt; 2020 and Later.\u003c\/p\u003e\n\u003ch6\u003eInstallation Guide\u003c\/h6\u003e\u003cp\u003eWe recommend fitting by a garage or exhaust specialist. Milltek allow 1.5–2 hours including removing the factory part.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0511\/6700\/2795\/files\/milltek-fitting-ssxbm1319.pdf\" target=\"_blank\" rel=\"noopener\"\u003eMilltek fitting instructions (PDF)\u003c\/a\u003e\u003c\/p\u003e","brand":"Milltek Sport","offers":[{"title":"Polished GT-115","offer_id":56538055999867,"sku":"MIL-SSXBM1317","price":2740.98,"currency_code":"GBP","in_stock":true},{"title":"Cerakote Black GT-115","offer_id":56538056032635,"sku":"MIL-SSXBM1318","price":3030.46,"currency_code":"GBP","in_stock":true},{"title":"Brushed Titanium GT-115","offer_id":56538056065403,"sku":"MIL-SSXBM1319","price":3269.92,"currency_code":"GBP","in_stock":true},{"title":"Burnt Titanium GT-115","offer_id":56538056098171,"sku":"MIL-SSXBM1320","price":3396.23,"currency_code":"GBP","in_stock":true},{"title":"Carbon Fibre JET-115","offer_id":56538056130939,"sku":"MIL-SSXBM1321","price":3328.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/6700\/2795\/files\/milltek-resonated-quieter-secondary-cat-back-exh-01-5231393d.jpg?v=1792935063","url":"https:\/\/hazmotorsport.co.uk\/products\/milltek-sport-resonated-quieter-secondary-cat-back-exhaust-bmw-g8x-m3m4","provider":"HAZ MOTORSPORT","version":"1.0","type":"link"}