Manufacturer SKU: AUD.B8.S4.VSES.BR.RC Audi B8 / B8.5 S4 & S5 Valved Exhaust System T304 Stainless Steel, High-Pitch X-Pipe, Vacuum Valve Control Overview Transform your supercharged V6 into a true auditory experience. Our Valvetronic Designs Valved Exhaust System for the Audi B8 and B8.5 S4/S5 delivers a unique, high-pitch wail while retaining low-end rawness for a sound profile unlike anything the platform has heard before. Constructed entirely from T304 stainless steel and featuring our high-pitch X-pipe technology, this system runs 2.5 inches from front to rear, unlocking an exhilarating tone across the entire rev range. With integrated vacuum-actuated valves controlled via an included key fob remote, you have instant flexibility to switch from refined cruising to an aggressive, motorsport-inspired soundtrack. Why It Works - High-Pitch X-Pipe Technology: Creates a sharper, more exotic tone while enhancing flow. - Vacuum Valve Control: Allows on-demand sound control from the included key fob remote. - Full Mandrel-Bent Design: Optimized flow for improved throttle response and power delivery. Sound & Control - Valves Closed: Quiet enough for early morning starts and comfortable highway cruising. - Valves Open: Releases the full character of the supercharged V6 with both low-end depth and high-pitch excitement. - Remote Control: Operate valves instantly from the driver’s seat using the included key fob system. Construction & Options - Material: T304 stainless steel for long-term durability and corrosion resistance. - Weight Savings: 12.3 lb lighter than the factory exhaust. - Craftsmanship: Precision TIG welds and mandrel bends for maximum flow and strength. - Diameter: 2.5" tubing from front to tips. Fitment - 2010–2016 Audi S4 (B8/B8.5) - 2010–2016 Audi S5 (B8/B8.5) Installation Notes - Direct OEM replacement—no permanent modifications required. - 100% reversible—return to stock at any time. What’s Included - T304 stainless steel valved exhaust system - Integrated high-pitch X-pipe - Vacuum-actuated valves with key fob control system - All necessary clamps and hardware Specifications - Tubing Diameter: 2.5" from front to tips - Material: T304 stainless steel - Valves: Vacuum-actuated, remote controlled - Weight Savings: 12.3 lb lighter than OEM 🎧 Hear It in Action: - Sound Clip 1 - Sound Clip 2 PLEASE EMAIL US AT: CUSTOMERSERVICE@VALVETRONIC.COM WITH ANY QUESTIONS