{"product_id":"active-autowerke-bmw-m3-m4-f80-f82-f83-signature-catback-exhaust-system","title":"Active Autowerke BMW M3\/M4 (F80\/F82\/F83) Signature Catback Exhaust System","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eBuilt from the ground up for maximum performance and sound, this is a complete turbo-back exhaust system engineered specifically for the S55-powered F8X M3 and M4. The factory centre section uses a dual-pipe layout that both restricts flow and contributes to turbo lag. Active Autowerke's Signature System solves both problems at once, replacing it with a single 3.5in pipe that improves exhaust flow, sharpens turbo response, and delivers a deep, purposeful sound in its place.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eConstructed entirely from 100% SS304 stainless steel with full TIG welding throughout (never MIG), the 3.5in mandrel-bent design is engineered to handle power levels well beyond stock, making it just as suitable for a factory-spec M3 or M4 as it is for heavily modified builds, including turbo upgrades. A carefully engineered Y-pipe layout, full 3.5in diameter, and integrated valve system deliver excellent flow while finally giving the S55 the genuinely sporty exhaust note it was missing from the factory, while still retaining the ability to close the valves for quiet, everyday driving.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eWorks with:\u003c\/strong\u003e OEM valve actuators. Turbo-back 3.5in construction, from the downpipe all the way to the exhaust tips.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eWhy Choose This Exhaust System\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100% SS304 stainless steel construction, fully TIG welded (no MIG welding)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMandrel-bent 3.5in turbo-back pipework, from downpipe to tips\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEngineered Y-pipe design for optimal exhaust flow\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e90mm adjustable-position exhaust tips\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWorks with OEM valve actuators for full quiet\/loud control\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBuilt to handle both stock and heavily modified engines\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNo permanent vehicle modification required for installation\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured in Miami, Florida, USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F80 M3 Sedan (2014-2020)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F82 M4 Coupe (2014-2020)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F83 M4 Cabriolet (2014-2020)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection id=\"shopify-section-template--23383691428165__main\" class=\"shopify-section section\"\u003e\n\u003cdiv class=\"page-width\"\u003e\n\u003cdiv class=\"product product--small product--left product--thumbnail_slider product--mobile-show grid grid--1-col grid--2-col-tablet\"\u003e\n\u003cdiv class=\"product__info-wrapper grid__item product__info-wrapper--extra-padding scroll-trigger animate--slide-in\"\u003e\n\u003csection id=\"ProductInfo-template--23383691428165__main\" class=\"product__info-container product__column-sticky\"\u003e\n\u003cdiv class=\"product__description rte quick-add-hidden\"\u003e\n\u003csection id=\"shopify-section-template--23383691428165__main\" class=\"shopify-section section\"\u003e\n\u003cdiv class=\"page-width\"\u003e\n\u003cdiv class=\"product product--small product--left product--thumbnail_slider product--mobile-show grid grid--1-col grid--2-col-tablet\"\u003e\n\u003cdiv class=\"product__info-wrapper grid__item product__info-wrapper--extra-padding scroll-trigger animate--slide-in\"\u003e\n\u003csection id=\"ProductInfo-template--23383691428165__main\" class=\"product__info-container product__column-sticky\"\u003e\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Active Autowerke","offers":[{"title":"Brushed Silver","offer_id":54423746249037,"sku":"AAW-SIL-S55-009","price":4881.9,"currency_code":"EUR","in_stock":false},{"title":"Matte Black","offer_id":54423746281805,"sku":"AAW-SIL-S55-009","price":4970.84,"currency_code":"EUR","in_stock":false},{"title":"Carbon Fibre","offer_id":54423746314573,"sku":"AAW-SIL-S55-009","price":5517.15,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/Active-Autowerke-BMW-f8x-catback.jpg?v=1785350331","url":"https:\/\/i6tuning.com\/products\/active-autowerke-bmw-m3-m4-f80-f82-f83-signature-catback-exhaust-system","provider":"i6 Tuning","version":"1.0","type":"link"}