Valvetronic Designs Valved Sport Exhaust System for B9 Audi S4 / S5 [AUD.B9.S4.VSES.BR.RC]

Valvetronic Designs Valved Sport Exhaust System for B9 Audi S4 / S5

Valvetronic Designs notes that the Audi B9 S4 / S5’s EA839 3.0L V6 has serious potential, but the stock exhaust masks its character. Their Full Valved Exhaust System unlocks the voice of the platform with a single, complete solution—from OEM or aftermarket downpipe to tips—eliminating mix-and-match resonators or axle-backs and ensuring perfect fitment, seamless performance, and consistent sound quality. With the valves open, it delivers a bold, motorsport-inspired note with pronounced overrun crackles and real presence; with the valves closed (and paired with the OEM downpipe), it returns to quiet, factory manners with zero drone. For drivers stepping up from V8-powered B6 / B7 S4s, this system restores the engagement and emotional sound they’ve been missing, making B9 ownership every bit as exciting.

Why It Works

• Valvetronic Designs engineers a one-piece, downpipe-to-tips system that removes the hassle of mixing vendor components, uses electronic valve control to switch instantly between aggressive and refined sound, and employs full mandrel-bent construction to maximize flow for sharper throttle response and increased power.

Sound & Control

• Valvetronic Designs tunes the system for true dual personality: with the valves open it delivers an aggressive note with a rich midrange and crisp overrun crackles, while with the valves closed it returns to quiet, OEM-like refinement for comfortable daily driving. Paired with the OEM downpipe, it maintains cabin comfort with zero drone.

Features

• Complete pipe-to-tips system for the B9 S4 / S5 (EA839) — no mix-and-match parts; perfect fitment and consistent sound
• Dual-mode valving: aggressive, motorsport note with rich midrange and crisp overrun (open) quiet, OEM-like refinement (closed)
• Zero drone when paired with the OEM downpipe for uncompromised cabin comfort
• Electronic valve control for instant sound switching
• Full mandrel-bent architecture to maximize flow, sharpen throttle response, and increase power
• T304 stainless steel construction for durability and corrosion resistance
• Precision TIG-welded fabrication for strength and a premium finish
• 16.4 lb weight reduction vs. the factory exhaust
• Works with OEM or aftermarket pipes

Specifications

• Tubing: Full mandrel-bent T304 stainless steel
• Valves: Electronic, remote-controlled
• Weight Savings: 16.4 lb lighter than OEM
• Finish: Brushed stainless steel

What’s Included

• Full T304 stainless steel valved exhaust system
• Electronic exhaust valves with key fob remote system
• All necessary clamps and hardware

Applications

• Audi S4: B9 (2017-2024) [3.0L V6 Turbo]
• Audi S5: B9 (2018-2024) [3.0L V6 Turbo]

Notes

• Coupe models require modification to shorten the mid-section for proper fitment

About Valvetronic Designs

Valvetronic Designs, based in Boyertown, Pennsylvania, is a leader in high-performance exhaust systems, dedicated to innovation, precision, and enhancing the driving experience. Specializing in bespoke solutions for luxury and performance vehicles such as Lamborghini, Ferrari, and Porsche, Valvetronic combines advanced engineering with meticulous craftsmanship to deliver unparalleled sound and performance. With proprietary technologies like free-flow configurations and double X-pipe designs, their exhaust systems set new benchmarks for exotic and race-inspired tones. Every product is designed and manufactured in-house, ensuring exceptional quality and tailored customization, from fitment precision to sound profiles. Driven by a passion for excellence, Valvetronic Designs strives to create the ultimate auditory and performance experiences for automotive enthusiasts worldwide.