Description
Transform your Audi B9 A4 from mild to wild with the IE Catback Exhaust System—engineered to unleash aggressive performance sound, eliminate unwanted drone, and enhance your car’s overall driving experience. Designed specifically for the turbocharged 2.0T engine, this system elevates both tone and style with precision engineering and motorsport-inspired aesthetics.
Unlike the muted stock setup, IE’s catback system extracts a deep, resonant exhaust note that commands attention without overwhelming the cabin. This is made possible by proprietary DroneTrap™ technology, which eliminates drone frequencies for a bold yet refined sound profile during acceleration, cruising, and idle.
Key Features:
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Aggressive Yet Refined Sound – Unlock a deeper, sportier exhaust tone tailored for the A4’s turbocharged engine.
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Proprietary DroneTrap™ Resonator – Eliminates cabin drone without compromising performance sound.
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Twin 90mm Slash-Cut Tips – Motorsports styling with a brushed finish and adjustable depth.
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High-Flow Performance Design – Mandrel-bent 2.5" T304L stainless steel tubing for optimal flow and durability.
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Precision Fitment – Compatible with both stock and IE ProCore downpipes.
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Hassle-Free Installation – Direct bolt-on design requires no cutting or welding.
DroneTrap™ Technology – Drive Without the Drone
IE’s DroneTrap™ resonator is a proprietary solution that cancels out the specific sound frequencies that cause interior drone, allowing you to enjoy a full-bodied exhaust note without fatigue or discomfort. Whether daily driving or going full throttle, this system provides the best of both worlds—maximum sound outside, minimal intrusion inside.
Tuned for Aesthetics and Performance
The system features twin 90mm slash-cut exhaust tips that deliver a sleek and aggressive rear-end look. Each tip is adjustable for depth to tailor the appearance to your preference—subtle or standout.
Durability Meets Design
Constructed from premium T304L stainless steel, the IE Catback resists corrosion and withstands extreme temperatures. The mandrel-bent tubing, multi-point boxed hangers, and bridged reinforcements ensure long-lasting performance, while OE-quality clamps deliver a leak-free, rattle-free installation.
Engineered for Perfect Fitment
Using advanced 3D scanning and CAD software, IE has created a catback system with precise clearances for the B9 A4 chassis. This guarantees proper alignment, eliminates contact with other components, and ensures a perfect fit—no rubbing, no rattles, no guesswork.
Installation Made Simple
This is a true bolt-on system with no permanent modifications required. With standard tools and access to a lift, installation takes approximately 1–2 hours.
