{"product_id":"milltek-resonated-cat-back-exhaust-audi-b5-s4-amp-rs4-avant-ssxau002","title":"Resonated Cat-Back Exhaust | Audi B5 S4 \u0026 RS4 Avant | Milltek","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMilltek Resonated Cat-Back Exhaust System for Audi B5 RS4 Avant (2000-2002). Direct factory fitment replacement using OEM hangers, no modification required. Engineered to deliver enhanced exhaust flow, dyno-proven performance gains, and a refined OE+ sound character through precision resonance tuning.\u003c\/p\u003e\n\u003cp\u003eHand-finished T304L stainless steel construction with mandrel-bent 2.5\" (63.50mm) diameter piping. The resonated design eliminates drone at cruise while preserving full-throttle tone definition. CNC-formed mounting brackets ensure perfect alignment with factory attachment points. Available in polished or satin finish.\u003c\/p\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\n\u003ch3\u003eFitment Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi RS4 B5 Avant V6 (2000-2002)\u003c\/li\u003e\n\u003cli\u003eAudi S4 B5 Quattro (compatible with equivalent exhaust packaging)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: T304L stainless steel, hand-finished\u003c\/li\u003e\n\u003cli\u003ePipe Diameter: 2.5\" (63.50mm), mandrel-bent\u003c\/li\u003e\n\u003cli\u003eDesign: Resonated cat-back system\u003c\/li\u003e\n\u003cli\u003eInstallation: Direct OEM+ fitment, uses factory hangers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e This system represents the gold standard for B5 RS4 exhaust upgrades-precision engineering combined with real dyno gains and engineered tone character. \u003c\/p\u003e\n\u003cp\u003eDesigned and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":68005469847854,"sku":"SSXAU002","price":1568.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/1719\/1726\/files\/SSXAU002_1.jpg?v=1794451539","url":"https:\/\/shopicwp.com\/products\/milltek-resonated-cat-back-exhaust-audi-b5-s4-amp-rs4-avant-ssxau002","provider":"Inner Circle Wheels and Performance","version":"1.0","type":"link"}