{"product_id":"milltek-cat-back-exhaust-audi-rs4-b9-2-9-v6-turbo-avant-opf-gpf-19","title":"Milltek Cat Back Exhaust Audi RS4 B9 2.9 V6 Turbo Avant OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Cat-back Exhaust for Audi RS4 B9 2.9 V6 Turbo Avant (OPF\/GPF Models) (2019 onwards) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the Audi RS4 B9 2.9 V6 Turbo Avant (OPF\/GPF Models). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated, road+ part resonated or resonated EC approved versions and 4 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 70mm (2.76\")\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. 2 to 2.5 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\u003e70mm (2.76\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 4 tailpipe finishes: Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval\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\n\u003cli\u003eAudi RS4 B9 2.9 V6 Turbo Avant (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003cli\u003eAudi RS5 B9 2.9 V6 Turbo Sportback (OPF\/GPF Models) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot every version fits every car in this list. Check the fitment shown for the option you select.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Audi RS4 B9 2.9 V6 Turbo Avant (Non OPF\/GPF Models), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs4-b9-2-9-v6-turbo-avant-non-opf-gpf-18\"\u003eMilltek Cat-back Exhaust Audi RS4 B9 2.9 V6 Turbo Avant Non OPF\/GPF 18+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 2 to 2.5 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-audi-rs4-b9-2-9-v6-turbo-avant-opf-gpf-19\"\u003eMilltek Downpipe \u0026amp; De-cat Audi RS4 B9 2.9 V6 Turbo Avant 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.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: Burnt Titanium Oval, Cerakote Black Oval, Polished Oval, Titanium Oval. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the Audi RS5 B9 2.9 V6 Turbo Sportback (OPF\/GPF Models)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Audi RS5 B9 2.9 V6 Turbo Sportback (OPF\/GPF Models) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the Audi RS4 B9 2.9 V6 Turbo Avant (Non OPF\/GPF Models)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-audi-rs4-b9-2-9-v6-turbo-avant-non-opf-gpf-18\"\u003eMilltek Cat-back Exhaust Audi RS4 B9 2.9 V6 Turbo Avant Non OPF\/GPF 18+\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 catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 2 to 2.5 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","brand":"Milltek","offers":[{"title":"Non-Resonated \/ Burnt Titanium Oval","offer_id":56392691941761,"sku":"MIL-SSXAU832","price":3213.21,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Cerakote Black Oval","offer_id":56392691974529,"sku":"MIL-SSXAU830","price":3032.89,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Polished Oval","offer_id":56392692007297,"sku":"MIL-SSXAU829","price":2940.89,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Titanium Oval","offer_id":56392692040065,"sku":"MIL-SSXAU831","price":3158.53,"currency_code":"GBP","in_stock":true},{"title":"Road+, Part Resonated \/ Burnt Titanium Oval","offer_id":56392692072833,"sku":"MIL-SSXAU828","price":3159.27,"currency_code":"GBP","in_stock":true},{"title":"Road+, Part Resonated \/ Cerakote Black Oval","offer_id":56392692105601,"sku":"MIL-SSXAU826","price":2921.36,"currency_code":"GBP","in_stock":true},{"title":"Road+, Part Resonated \/ Polished Oval","offer_id":56392692138369,"sku":"MIL-SSXAU825","price":2808.05,"currency_code":"GBP","in_stock":true},{"title":"Road+, Part Resonated \/ Titanium Oval","offer_id":56392692171137,"sku":"MIL-SSXAU827","price":3081.94,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Burnt Titanium Oval","offer_id":56392692203905,"sku":"MIL-SSXAU824","price":3566.32,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Cerakote Black Oval","offer_id":56392692236673,"sku":"MIL-SSXAU822","price":3328.42,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Polished Oval","offer_id":56392692269441,"sku":"MIL-SSXAU821","price":3215.11,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Titanium Oval","offer_id":56392692302209,"sku":"MIL-SSXAU823","price":3488.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU832_1_2f52a5e1-3273-41b0-bc3d-019fe9510fe9.jpg?v=1791890777","url":"https:\/\/milltekexhaustshop.com\/products\/milltek-cat-back-exhaust-audi-rs4-b9-2-9-v6-turbo-avant-opf-gpf-19","provider":"Milltek Exhaust Shop","version":"1.0","type":"link"}