{"product_id":"milltek-resonated-cat-back-exhaust-audi-b9-s4-s5-carbon-fibre-tips-ssxau721","title":"Milltek Resonated Cat-Back Exhaust | Audi B9 S4 S5 - Carbon Fibre Tips","description":"\u003cp\u003eMilltek Resonated Cat-Back Exhaust System for Audi B9 S4 and S5 3.0 V6 Turbo (2016+). Direct factory fitment replacement with 2.50\" (63.50mm) mandrel-bent T304L stainless steel construction. Engineered for Sport Differential models without brace bars.\u003c\/p\u003e\n\u003cp\u003eHand-finished quad JET-100 carbon fiber trim outlets deliver a refined OE+ tone character without excessive drone. The resonated design fine-tunes the OEM resonance point for a sportier, more pronounced soundtrack while maintaining street-legal comfort. CNC-formed silencers and precision welds ensure durability and corrosion resistance.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi B9 S4 Saloon\/Avant (2016+) - Sport Differential models only, without brace bars\u003c\/li\u003e\n\u003cli\u003eAudi B9 S5 Sportback (2017+) - Sport Differential models only, without brace bars\u003c\/li\u003e\n\u003cli\u003eEngine: 3.0L V6 Turbo (EA839)\u003c\/li\u003e\n\u003cli\u003eUses OEM hangers and mounting points - no modification required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePipe diameter: 2.50\" (63.50mm) mandrel-bent\u003c\/li\u003e\n\u003cli\u003eMaterial: T304L stainless steel, hand-finished\u003c\/li\u003e\n\u003cli\u003eResonated: Yes - engineered tone with drone elimination\u003c\/li\u003e\n\u003cli\u003eOutlets: Quad JET-100 carbon fiber trim\u003c\/li\u003e\n\u003cli\u003eSystem type: Cat-back (OEM catalytic converters retained)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e EC type-approved for global compliance. \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","brand":"Milltek","offers":[{"title":"Default Title","offer_id":51360559169759,"sku":"SSXAU721","price":4120.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8496\/9183\/files\/SSXAU721_1.jpg?v=1789002679","url":"https:\/\/egtuning.com\/products\/milltek-resonated-cat-back-exhaust-audi-b9-s4-s5-carbon-fibre-tips-ssxau721","provider":"Egor's Garage Tuning ","version":"1.0","type":"link"}