{"product_id":"milltek-80mm-non-resonated-opf-back-exhaust-for-audi-d5-s8-brushed-titanium-tips-ssxau950","title":"Milltek 80mm Non-Resonated OPF-Back Exhaust for Audi D5 S8, Brushed Titanium Tips","description":"\u003cp\u003eMilltek 80mm Cat Back Non-Resonated OPF-Back Exhaust System for Audi D5 S8 4.0 TFSI V8 (2020+). This is a direct factory-fitment cat-back replacement engineered to eliminate factory resonance chambers, delivering a more aggressive exhaust character while maintaining OEM fitment with factory hangers and mounting points.\u003c\/p\u003e\n\u003cp\u003eConstructed from T304L stainless steel with CNC-formed GT-115 titanium trim ring. The 3.15\" (80mm) mandrel-bent pipe improves exhaust scavenging and gas velocity compared to factory restrictive passages. Hand-finished construction ensures durability and corrosion resistance. OPF-back fitment means the system begins after the gasoline particulate filter, making it street-legal while delivering full sonic character and measurable flow gains on dyno testing.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi S8 D5 (2020+) 4.0 TFSI V8 Saloon - all wheelbase variants\u003c\/li\u003e\n\u003cli\u003eDirect OEM mount compatibility; no modification required\u003c\/li\u003e\n\u003cli\u003eOPF-back configuration (post-particulate filter)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.\u003c\/p\u003e\n\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\n\u003cul class=\"fitment-list\"\u003e\n\u003cli\u003e2020-2026 Audi S8 Base\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150642966814,"sku":"MILSSXAU950","price":7145.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXAU950_1.jpg?v=1791254115","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-80mm-non-resonated-opf-back-exhaust-for-audi-d5-s8-brushed-titanium-tips-ssxau950","provider":"Signature Autohaus","version":"1.0","type":"link"}