{"product_id":"titanium-valved-catback-exhaust-system-for-audi-b8-b8-5-s4-s5","title":"Titanium Valved Catback Exhaust System for Audi B8 B8.5 S4 S5","description":"\u003cp data-start=\"308\" data-end=\"697\"\u003eUnleash the full character of your \u003cstrong data-start=\"343\" data-end=\"368\"\u003eAudi B8\/B8.5 S4 or S5\u003c\/strong\u003e with the \u003cstrong data-start=\"378\" data-end=\"432\"\u003eSTRATEC Ultra-Light Titanium Valved Exhaust System\u003c\/strong\u003e, engineered for enthusiasts who want \u003cstrong data-start=\"470\" data-end=\"546\"\u003emaximum weight reduction, sharper response, and adjustable sound control\u003c\/strong\u003e. Built entirely from titanium, this system delivers a crisp, high-energy exhaust tone when valves are open and refined, OEM-like behavior when closed.\u003c\/p\u003e\n\u003cp data-start=\"699\" data-end=\"920\"\u003eDesigned as a \u003cstrong data-start=\"713\" data-end=\"750\"\u003ecomplete one-piece exhaust system\u003c\/strong\u003e, it eliminates the need to mix axle-backs, resonators, or mid-pipes from different suppliers—ensuring consistent sound quality, proper fitment, and seamless performance.\u003c\/p\u003e\n\u003cp data-start=\"922\" data-end=\"1187\"\u003eWith valves open, expect an aggressive, motorsport-inspired tone with strong midrange presence and exciting overrun character. With valves closed, the exhaust remains quiet and comfortable for daily driving, with minimal drone when paired with the factory downpipe.\u003c\/p\u003e\n\u003chr data-start=\"1189\" data-end=\"1192\"\u003e\n\u003ch3 data-start=\"1194\" data-end=\"1210\"\u003eWhy It Works\u003c\/h3\u003e\n\u003cul data-start=\"1211\" data-end=\"1573\"\u003e\n\u003cli data-start=\"1211\" data-end=\"1315\"\u003e\n\u003cp data-start=\"1213\" data-end=\"1315\"\u003e\u003cstrong data-start=\"1213\" data-end=\"1251\"\u003eUltra-Light Titanium Construction:\u003c\/strong\u003e Significant weight savings over stainless and factory systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1316\" data-end=\"1403\"\u003e\n\u003cp data-start=\"1318\" data-end=\"1403\"\u003e\u003cstrong data-start=\"1318\" data-end=\"1347\"\u003eElectronic Valve Control:\u003c\/strong\u003e Instantly switch between aggressive and refined sound\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1404\" data-end=\"1490\"\u003e\n\u003cp data-start=\"1406\" data-end=\"1490\"\u003e\u003cstrong data-start=\"1406\" data-end=\"1434\"\u003eOne-Piece System Design:\u003c\/strong\u003e No component mixing for perfect fit and sound balance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1491\" data-end=\"1573\"\u003e\n\u003cp data-start=\"1493\" data-end=\"1573\"\u003e\u003cstrong data-start=\"1493\" data-end=\"1526\"\u003eMandrel-Bent Titanium Tubing:\u003c\/strong\u003e Maximizes exhaust flow and throttle response\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1575\" data-end=\"1578\"\u003e\n\u003ch3 data-start=\"1580\" data-end=\"1599\"\u003eSound \u0026amp; Control\u003c\/h3\u003e\n\u003cul data-start=\"1600\" data-end=\"1789\"\u003e\n\u003cli data-start=\"1600\" data-end=\"1670\"\u003e\n\u003cp data-start=\"1602\" data-end=\"1670\"\u003e\u003cstrong data-start=\"1602\" data-end=\"1618\"\u003eValves Open:\u003c\/strong\u003e Loud, sharp, and performance-focused exhaust tone\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1671\" data-end=\"1728\"\u003e\n\u003cp data-start=\"1673\" data-end=\"1728\"\u003e\u003cstrong data-start=\"1673\" data-end=\"1691\"\u003eValves Closed:\u003c\/strong\u003e Quiet, refined, and daily-drivable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1729\" data-end=\"1789\"\u003e\n\u003cp data-start=\"1731\" data-end=\"1789\"\u003e\u003cstrong data-start=\"1731\" data-end=\"1760\"\u003eDriver-Controlled Valves:\u003c\/strong\u003e On-demand sound adjustment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1791\" data-end=\"1794\"\u003e\n\u003ch3 data-start=\"1796\" data-end=\"1822\"\u003eConstruction \u0026amp; Details\u003c\/h3\u003e\n\u003cul data-start=\"1823\" data-end=\"2121\"\u003e\n\u003cli data-start=\"1823\" data-end=\"1900\"\u003e\n\u003cp data-start=\"1825\" data-end=\"1900\"\u003e\u003cstrong data-start=\"1825\" data-end=\"1838\"\u003eMaterial:\u003c\/strong\u003e Full \u003cstrong data-start=\"1844\" data-end=\"1869\"\u003etitanium construction\u003c\/strong\u003e for extreme weight reduction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1901\" data-end=\"1977\"\u003e\n\u003cp data-start=\"1903\" data-end=\"1977\"\u003e\u003cstrong data-start=\"1903\" data-end=\"1922\"\u003eWeight Savings:\u003c\/strong\u003e Significantly lighter than OEM and stainless systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1978\" data-end=\"2047\"\u003e\n\u003cp data-start=\"1980\" data-end=\"2047\"\u003e\u003cstrong data-start=\"1980\" data-end=\"1998\"\u003eCraftsmanship:\u003c\/strong\u003e Precision TIG welding and smooth mandrel bends\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2048\" data-end=\"2121\"\u003e\n\u003cp data-start=\"2050\" data-end=\"2121\"\u003e\u003cstrong data-start=\"2050\" data-end=\"2067\"\u003eExhaust Tips:\u003c\/strong\u003e Premium titanium tips for a clean motorsport finish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2123\" data-end=\"2126\"\u003e\n\u003ch3 data-start=\"2128\" data-end=\"2147\"\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cul data-start=\"2148\" data-end=\"2223\"\u003e\n\u003cli data-start=\"2148\" data-end=\"2185\"\u003e\n\u003cp data-start=\"2150\" data-end=\"2185\"\u003e\u003cstrong data-start=\"2150\" data-end=\"2183\"\u003e2010–2016 Audi S4 (B8 \/ B8.5)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2186\" data-end=\"2223\"\u003e\n\u003cp data-start=\"2188\" data-end=\"2223\"\u003e\u003cstrong data-start=\"2188\" data-end=\"2221\"\u003e2010–2016 Audi S5 (B8 \/ B8.5)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bull Boost Performance","offers":[{"title":"Default Title","offer_id":53364551516467,"sku":"721814382419","price":2499.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2720\/8266\/files\/TITS4S5.jpg?v=1779122234","url":"https:\/\/ntxglow.com\/products\/titanium-valved-catback-exhaust-system-for-audi-b8-b8-5-s4-s5","provider":"NTXGlow","version":"1.0","type":"link"}