{"product_id":"milltek-filter-back-exhaust-ford-focus-mk4-st-2-3-ecoboost-estate-opf-gpf-19","title":"Milltek Filter Back Exhaust Ford Focus Mk4 ST 2.3 EcoBoost Estate OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Filter-back Exhaust for Ford Focus Mk4 ST 2.3-litre EcoBoost Estate\/Wagon\/Combi (OPF\/GPF Equipped) (2019 onwards) – Sharper Sound, Filter Retained\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's particulate filter-back system for the Ford Focus Mk4 ST 2.3-litre EcoBoost Estate\/Wagon\/Combi (OPF\/GPF Equipped). It replaces everything downstream of the factory diesel or petrol particulate filter with wider-bore pipework and re-tuned silencers, cutting back pressure and sharpening the exhaust note. The filter itself is left exactly where the manufacturer fitted it, so emissions equipment is unaffected. It's offered in race non-resonated or resonated EC approved versions and 5 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the right choice if you want a sportier sound and a genuine, if modest, flow improvement on a filter-equipped car, without going anywhere near the parts of the system that keep it emissions-compliant.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Particulate Filter-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eFits behind the factory particulate filter, which stays in place\u003c\/li\u003e\n\u003cli\u003eChoice of 5 tailpipe finishes: GT-115 Burnt Titanium, JET-115 Carbon Fibre, GT-115 Cerakote Black, GT-115 Polished, GT-115 Titanium\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eFord Focus Mk4 ST 2.3-litre EcoBoost Estate\/Wagon\/Combi (OPF\/GPF Equipped) (2019 onwards)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Ford Focus Mk4 ST 2.3-litre EcoBoost Hatch (OPF\/GPF Equipped), which needs the \u003ca href=\"\/products\/milltek-filter-back-exhaust-ford-focus-mk4-st-2-3-ecoboost-hatch-opf-gpf-19\"\u003eMilltek Filter-back Exhaust Ford Focus Mk4 ST 2.3-litre EcoBoost Hatch OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-decat-downpipe-ford-focus-mk4-st-2-3-ecoboost-estate-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Ford Focus Mk4 ST 2.3-litre EcoBoost Estate, Wagon \u0026amp; Combi OPF\/GPF 19+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-gpf-opf-bypass-ford-focus-mk4-st-2-3-ecoboost-estate-opf-gpf-19\"\u003eMilltek GPF\/OPF Bypass Ford Focus Mk4 ST 2.3-litre EcoBoost Estate, Wagon \u0026amp; Combi OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive. Race versions are the loudest and are intended for track use.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-115 Burnt Titanium, JET-115 Carbon Fibre, GT-115 Cerakote Black, GT-115 Polished, GT-115 Titanium. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Ford Focus Mk4 ST 2.3-litre EcoBoost Hatch (OPF\/GPF Equipped)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-filter-back-exhaust-ford-focus-mk4-st-2-3-ecoboost-hatch-opf-gpf-19\"\u003eMilltek Filter-back Exhaust Ford Focus Mk4 ST 2.3-litre EcoBoost Hatch OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory particulate filter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory particulate filter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory particulate filter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Race, Non-Resonated \/ GT-115 Burnt Titanium","offer_id":56392810955137,"sku":"MIL-SSXFD327","price":1313.61,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ JET-115 Carbon Fibre","offer_id":56392810987905,"sku":"MIL-SSXFD328","price":1279.89,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ GT-115 Cerakote Black","offer_id":56392811020673,"sku":"MIL-SSXFD325","price":1130.74,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ GT-115 Polished","offer_id":56392811053441,"sku":"MIL-SSXFD324","price":985.98,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ GT-115 Titanium","offer_id":56392811086209,"sku":"MIL-SSXFD326","price":1250.46,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ GT-115 Burnt Titanium","offer_id":56392811118977,"sku":"MIL-SSXFD323","price":1490.45,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ JET-115 Carbon Fibre","offer_id":56392811151745,"sku":"MIL-SSXFD321","price":1456.72,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ GT-115 Cerakote Black","offer_id":56392811184513,"sku":"MIL-SSXFD320","price":1307.57,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ GT-115 Polished","offer_id":56392811217281,"sku":"MIL-SSXFD319","price":1162.82,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ GT-115 Titanium","offer_id":56392811250049,"sku":"MIL-SSXFD322","price":1427.29,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXFD327_1.jpg?v=1791892967","url":"https:\/\/milltekexhaustshop.com\/products\/milltek-filter-back-exhaust-ford-focus-mk4-st-2-3-ecoboost-estate-opf-gpf-19","provider":"Milltek Exhaust Shop","version":"1.0","type":"link"}