Description
Bring your Audi B8 S4’s supercharged 3.0T V6 to life with the aggressive, refined sound of the IE Catback Exhaust System. Precision-engineered to amplify performance and driving emotion, this system features IE’s proprietary DroneTrap Technology to eliminate unwanted drone, delivering a deep, raw exhaust note that remains civilized during cruising. Designed for enthusiasts who demand both performance and comfort, this system is your B8 S4’s voice—refined, aggressive, and unmistakably tuned.
Constructed from mandrel-bent T304L stainless steel, this catback includes dual 2.5” tubing, an integrated X-pipe for optimal flow and tone, and quad 90mm brushed stainless steel tips for a bold, motorsport-inspired finish. Whether paired with factory or IE midpipes, installation is a straightforward bolt-on process—no cutting or welding required.
Key Features:
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Aggressive Yet Refined Sound – Designed to bring out the best of your 3.0T V6
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DroneTrap Technology – Cancels unwanted cabin drone for a more enjoyable drive
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Quad 90mm Slash-Cut Tips – Oversized and adjustable with brushed stainless finish
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Dual 2.5” Mandrel-Bent Tubing – Maintains high flow for improved performance
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Integrated X-Pipe – Enhances exhaust tone and balances pulses
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High-Quality Materials – T304L stainless steel with TIG welds and reinforced mounts
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Direct Bolt-On Installation – Works with stock or IE midpipes
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No Modifications Required – Fully reversible install with OE-style exhaust clamps
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Average Install Time – 1 to 2 hours
Signature Quad-Tip Style
The included 90mm slash-cut tips give the B8 S4 a powerful and performance-driven appearance. With adjustable depth, you can tailor the look to suit your personal style—whether you prefer a subtle OEM+ appearance or a more aggressive finish.
Refined Sound Without Drone – Thanks to DroneTrap
IE’s DroneTrap resonator is specially designed to isolate and cancel the sound frequencies that cause cabin drone—without dulling the aggressive growl your supercharged V6 deserves. This technology ensures a comfortable daily drive with an exhilarating tone when you open the throttle.
Durable Construction & Perfect Fitment
Every component of the IE Catback is designed for strength, longevity, and easy installation. Made from corrosion-resistant T304L stainless steel, this system features reinforced, multi-point hangers, bridged straight sections to eliminate flex and vibration, and OE-style stretch clamps for a secure, leak-free seal. Each kit includes everything needed for a complete install.
Optimized Engineering with Advanced R&D
Using 3D scanning and CAD modeling, IE engineers developed this system with precision fitment and maximum flow efficiency in mind. Designed specifically for the Audi B8 S4 chassis, the result is a bolt-on catback exhaust that installs cleanly and fits without any rubbing, rattles, or guesswork.
Installation Notes:
No cutting or welding is required. The IE Catback is a direct bolt-on to stock or IE midpipes. All necessary hardware and clamps are included.
Average Install Time: 1–2 hours
Want More Sound?
Pair the IE Catback with IE Midpipes for an even more aggressive sound. Prefer a more subtle tone? Use it with the factory midpipes for a refined yet sporty rumble that’s perfect for daily driving. Either way, it’s a fully compatible, bolt-on upgrade.
