Description
Unlock the hidden voice of your Audi S4 or S5 B9 with the Valvetronic Valved Sport Exhaust System — a complete cat-back solution designed to enhance sound, performance, and driving engagement. The EA839 3.0L turbocharged V6 under the hood of the B9 platform offers immense power potential, yet from the factory, it’s held back by a restrictive, muffled exhaust system that masks its true character. Valvetronic Designs solves this with a premium stainless steel exhaust system that transforms your driving experience from start-up to redline.
Crafted entirely from T304 stainless steel, this system connects directly to the OEM or aftermarket downpipe and continues all the way to a set of beautifully finished exhaust tips. By increasing flow and removing unnecessary restrictions, the system enables the engine to breathe freely and produce the exhilarating soundtrack it was always capable of.
What sets this system apart is its electronically controlled valving system, operated via an included key fob remote. With the valves open, the exhaust delivers a fierce, motorsport-inspired tone with aggressive overrun during deceleration. When closed, the system delivers a refined, near-stock sound—ideal for neighborhood driving, commuting, or when subtlety is preferred. The system is engineered to ensure zero drone or unwanted cabin resonance when paired with the OEM downpipe.
Unlike piecemeal setups from multiple vendors, this is a single, unified solution engineered for perfect integration, durability, and a consistent sound experience. It’s 16.4 lbs. lighter than the OEM system, fully mandrel-bent for optimal flow, and precision TIG-welded for long-term strength and performance.
If you're transitioning from a B6 or B7 S4 with a 4.2L naturally aspirated V8, you may find the B9’s factory sound underwhelming. This Valvetronic system restores the sense of drama and excitement, delivering a sonic upgrade worthy of the S badge.
Key Features:
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Full cat-back exhaust system – connects to OEM or aftermarket downpipes
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Constructed from premium T304 stainless steel for durability and corrosion resistance
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Electronic exhaust valves with key fob remote control for instant sound customization
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Dual sound profiles: aggressive with valves open, quiet and refined with valves closed
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16.4 lbs. lighter than the factory exhaust system
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Fully mandrel-bent tubing for improved flow and performance
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Precision TIG-welded joints for structural integrity and longevity
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No drone or cabin resonance when used with OEM downpipe
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100% reversible – system can be returned to stock without permanent modifications
Fitment:
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Audi S4 B9 (2017–2024)
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Audi S5 B9 Coupe / Sportback (2018–2024)
Important Note:
For Audi S5 Coupe models, minor modifications are required to shorten the midsection of the exhaust to ensure proper fitment. Please contact Valvetronic Designs customer support for detailed guidance prior to installation.
Upgrade your Audi’s driving experience with the Valvetronic Valved Sport Exhaust System—no compromise, just pure sound, precision, and performance.
