{"product_id":"audi-b9-s4-s5-valved-sport-exhaust-system","title":"Valvetronic Audi B9 S4 \/ S5 Valved Sport Exhaust System","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003c\/strong\u003e \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/ssya6IqyFNs?si=n763lRFNU9-PNpgH\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch1 data-start=\"103\" data-end=\"148\"\u003e\u003cstrong data-start=\"105\" data-end=\"146\"\u003eAudi B9 S4 \u0026amp; S5 Valved Exhaust System\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch3 data-start=\"149\" data-end=\"215\"\u003eFull T304 Stainless Steel System with Electronic Valve Control\u003c\/h3\u003e\n\u003chr data-start=\"217\" data-end=\"220\"\u003e\n\u003ch2 data-start=\"222\" data-end=\"239\"\u003e\u003cstrong data-start=\"225\" data-end=\"237\"\u003eOverview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"240\" data-end=\"574\"\u003eThe Audi B9 S4 and S5, powered by the EA839 3.0L V6, have impressive performance potential—but the stock exhaust hides much of this engine’s true character. The Valvetronic Designs Full Valved Exhaust System unleashes its voice, delivering an aggressive, motorsport-inspired tone when desired, and stock-like refinement when needed.\u003c\/p\u003e\n\u003cp data-start=\"576\" data-end=\"976\"\u003eUnlike typical setups requiring multiple components from different vendors, our system is engineered as a \u003cstrong data-start=\"682\" data-end=\"703\"\u003ecomplete solution\u003c\/strong\u003e—from the OEM or aftermarket downpipe all the way to the exhaust tips. This single-package design eliminates the need for mixing and matching resonator sections or axle-backs from other brands, ensuring perfect fitment, seamless performance, and consistent sound quality.\u003c\/p\u003e\n\u003cp data-start=\"978\" data-end=\"1194\"\u003eWith valves open, expect a bold exhaust note, pronounced overrun crackles, and a commanding presence. With valves closed, the car returns to quiet factory manners, with zero drone when paired with the OEM downpipe.\u003c\/p\u003e\n\u003cp data-start=\"1196\" data-end=\"1393\"\u003eFor those upgrading from the V8-powered B6 or B7 S4, our system delivers the level of engagement and emotional sound you’ve been missing—ensuring your B9 ownership experience is just as exciting.\u003c\/p\u003e\n\u003cul data-start=\"2918\" data-end=\"3107\"\u003e\n\u003cli data-start=\"3068\" data-end=\"3107\"\u003e\n\u003cp data-start=\"3070\" data-end=\"3107\"\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/2Ywjf114v54?si=rOOJUorzGA_SOpuW\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003chr data-start=\"1395\" data-end=\"1398\"\u003e\n\u003ch2 data-start=\"1400\" data-end=\"1421\"\u003e\u003cstrong data-start=\"1403\" data-end=\"1419\"\u003eWhy It Works\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1422\" data-end=\"1700\"\u003e\n\u003cli data-start=\"1422\" data-end=\"1519\"\u003e\n\u003cp data-start=\"1424\" data-end=\"1519\"\u003e\u003cstrong data-start=\"1424\" data-end=\"1452\"\u003eOne-Piece System Design:\u003c\/strong\u003e Eliminates the need for mixing components from multiple vendors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1520\" data-end=\"1608\"\u003e\n\u003cp data-start=\"1522\" data-end=\"1608\"\u003e\u003cstrong data-start=\"1522\" data-end=\"1551\"\u003eElectronic Valve Control:\u003c\/strong\u003e Switch between aggressive and refined sound instantly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1609\" data-end=\"1700\"\u003e\n\u003cp data-start=\"1611\" data-end=\"1700\"\u003e\u003cstrong data-start=\"1611\" data-end=\"1641\"\u003eMandrel-Bent Construction:\u003c\/strong\u003e Maximizes flow for improved throttle response and power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1702\" data-end=\"1705\"\u003e\n\u003ch2 data-start=\"1707\" data-end=\"1731\"\u003e\u003cstrong data-start=\"1710\" data-end=\"1729\"\u003eSound \u0026amp; Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1732\" data-end=\"1996\"\u003e\n\u003cli data-start=\"1732\" data-end=\"1831\"\u003e\n\u003cp data-start=\"1734\" data-end=\"1831\"\u003e\u003cstrong data-start=\"1734\" data-end=\"1750\"\u003eValves Open:\u003c\/strong\u003e Aggressive tone with rich midrange and sharp overrun crackles on deceleration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1832\" data-end=\"1914\"\u003e\n\u003cp data-start=\"1834\" data-end=\"1914\"\u003e\u003cstrong data-start=\"1834\" data-end=\"1852\"\u003eValves Closed:\u003c\/strong\u003e Quiet, refined, and OEM-like for comfortable daily driving.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1915\" data-end=\"1996\"\u003e\n\u003cp data-start=\"1917\" data-end=\"1996\"\u003e\u003cstrong data-start=\"1917\" data-end=\"1930\"\u003eNo Drone:\u003c\/strong\u003e When paired with the OEM downpipe, cabin comfort is unaffected.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/NbEZGHOoiwI?si=2DMRaZ8acEfUJlE6\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1998\" data-end=\"2001\"\u003e\n\u003ch2 data-start=\"2003\" data-end=\"2034\"\u003e\u003cstrong data-start=\"2006\" data-end=\"2032\"\u003eConstruction \u0026amp; Options\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2035\" data-end=\"2372\"\u003e\n\u003cli data-start=\"2035\" data-end=\"2124\"\u003e\n\u003cp data-start=\"2037\" data-end=\"2124\"\u003e\u003cstrong data-start=\"2037\" data-end=\"2050\"\u003eMaterial:\u003c\/strong\u003e T304 stainless steel for long-term durability and corrosion resistance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2125\" data-end=\"2193\"\u003e\n\u003cp data-start=\"2127\" data-end=\"2193\"\u003e\u003cstrong data-start=\"2127\" data-end=\"2146\"\u003eWeight Savings:\u003c\/strong\u003e 16.4 lb lighter than the OEM exhaust system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2194\" data-end=\"2285\"\u003e\n\u003cp data-start=\"2196\" data-end=\"2285\"\u003e\u003cstrong data-start=\"2196\" data-end=\"2214\"\u003eCraftsmanship:\u003c\/strong\u003e Precision TIG welds and mandrel bends for optimal flow and strength.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2286\" data-end=\"2372\"\u003e\n\u003cp data-start=\"2288\" data-end=\"2372\"\u003e\u003cstrong data-start=\"2288\" data-end=\"2297\"\u003eTips:\u003c\/strong\u003e Includes premium exhaust tips for a finished, performance-oriented look.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2374\" data-end=\"2377\"\u003e\n\u003ch2 data-start=\"2379\" data-end=\"2395\"\u003e\u003cstrong data-start=\"2382\" data-end=\"2393\"\u003eFitment\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2396\" data-end=\"2457\"\u003e\n\u003cli data-start=\"2396\" data-end=\"2426\"\u003e\n\u003cp data-start=\"2398\" data-end=\"2426\"\u003e\u003cstrong data-start=\"2398\" data-end=\"2424\"\u003e2017–2024 Audi S4 (B9)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2427\" data-end=\"2457\"\u003e\n\u003cp data-start=\"2429\" data-end=\"2457\"\u003e\u003cstrong data-start=\"2429\" data-end=\"2455\"\u003e2018–2024 Audi S5 (B9)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2459\" data-end=\"2462\"\u003e\n\u003ch2 data-start=\"2464\" data-end=\"2491\"\u003e\u003cstrong data-start=\"2467\" data-end=\"2489\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2492\" data-end=\"2709\"\u003e\n\u003cli data-start=\"2492\" data-end=\"2524\"\u003e\n\u003cp data-start=\"2494\" data-end=\"2524\"\u003eDirect-fit for sedan models.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2525\" data-end=\"2660\"\u003e\n\u003cp data-start=\"2527\" data-end=\"2660\"\u003e\u003cstrong data-start=\"2527\" data-end=\"2564\"\u003eCoupe models require modification\u003c\/strong\u003e to shorten the mid-section for proper fitment. Contact \u003cstrong data-start=\"2620\" data-end=\"2644\"\u003e\u003ca data-start=\"2622\" data-end=\"2642\" class=\"cursor-pointer\" rel=\"noopener\"\u003einfo@valvetronic.com\u003c\/a\u003e\u003c\/strong\u003e for guidance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2661\" data-end=\"2709\"\u003e\n\u003cp data-start=\"2663\" data-end=\"2709\"\u003e100% reversible—return to stock at any time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2711\" data-end=\"2714\"\u003e\n\u003ch2 data-start=\"2716\" data-end=\"2740\"\u003e\u003cstrong data-start=\"2719\" data-end=\"2738\"\u003eWhat’s Included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2741\" data-end=\"2887\"\u003e\n\u003cli data-start=\"2741\" data-end=\"2792\"\u003e\n\u003cp data-start=\"2743\" data-end=\"2792\"\u003eFull T304 stainless steel valved exhaust system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2793\" data-end=\"2849\"\u003e\n\u003cp data-start=\"2795\" data-end=\"2849\"\u003eElectronic exhaust valves with key fob remote system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2850\" data-end=\"2887\"\u003e\n\u003cp data-start=\"2852\" data-end=\"2887\"\u003eAll necessary clamps and hardware\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2889\" data-end=\"2892\"\u003e\n\u003ch2 data-start=\"2894\" data-end=\"2917\"\u003e\u003cstrong data-start=\"2897\" data-end=\"2915\"\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2918\" data-end=\"3107\"\u003e\n\u003cli data-start=\"2918\" data-end=\"2972\"\u003e\n\u003cp data-start=\"2920\" data-end=\"2972\"\u003e\u003cstrong data-start=\"2920\" data-end=\"2931\"\u003eTubing:\u003c\/strong\u003e Full mandrel-bent T304 stainless steel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2973\" data-end=\"3018\"\u003e\n\u003cp data-start=\"2975\" data-end=\"3018\"\u003e\u003cstrong data-start=\"2975\" data-end=\"2986\"\u003eValves:\u003c\/strong\u003e Electronic, remote-controlled\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3019\" data-end=\"3067\"\u003e\n\u003cp data-start=\"3021\" data-end=\"3067\"\u003e\u003cstrong data-start=\"3021\" data-end=\"3040\"\u003eWeight Savings:\u003c\/strong\u003e 16.4 lb lighter than OEM\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3068\" data-end=\"3107\"\u003e\n\u003cp data-start=\"3070\" data-end=\"3107\"\u003e\u003cstrong data-start=\"3070\" data-end=\"3081\"\u003eFinish:\u003c\/strong\u003e Brushed stainless steel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e","brand":"Valvetronic Designs","offers":[{"title":"Valved Sport Exhaust System \/ (4) Brushed Steel (3.5 Outlet)","offer_id":48842553852156,"sku":"AUD.B9.S4.VSES.BR.BRSH","price":2499.99,"currency_code":"USD","in_stock":true},{"title":"Valved Sport Exhaust System \/ (4) Burnt (3.5 Outlet)","offer_id":48842553884924,"sku":"AUD.B9.S4.VSES.BR.BRT","price":2499.99,"currency_code":"USD","in_stock":true},{"title":"Valved Sport Exhaust System \/ (4) Black (3.5 Outlet)","offer_id":48842553917692,"sku":"AUD.B9.S4.VSES.BR.BLK","price":2499.99,"currency_code":"USD","in_stock":true},{"title":"Valved Sport Exhaust System \/ (4) Carbon Fiber 1x1 (3.5 Outlet)","offer_id":48842553950460,"sku":"AUD.B9.S4.VSES.BR.RC","price":2499.99,"currency_code":"USD","in_stock":true},{"title":"Valved Sport Exhaust System \/ (4) Forged Carbon Fiber (3.5 Outlet)","offer_id":48842553983228,"sku":"AUD.B9.S4.VSES.BR.FC","price":2499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1128\/7276\/files\/A7405504.jpg?v=1773171346","url":"https:\/\/jdcustomsusa.com\/ja\/products\/audi-b9-s4-s5-valved-sport-exhaust-system","provider":"JD Customs U.S.A","version":"1.0","type":"link"}