The IE Catback Exhaust System designed for Audi B9/B9.5 S4 models introduces an innovative engineering approach and exceptional sound refinement. This exhaust system, equipped with proprietary DroneTrap technology, eradicates undesirable drone or rasp, producing a powerful exhaust note that harmonizes seamlessly with the S4's personality.

Distinguished by cutting-edge design elements, including mandrel-bent stainless steel, TIG welding, multi-point reinforcements, and oversized quad tips, this exhaust system redefines the driving experience. 

• DroneTrap Technology: The exhaust incorporates IE's proprietary DroneTrap technology, skillfully channeling distinctive pulse waves from the B9 3.0T engine's exhaust note into dual mathematically tuned resonators. These resonators specifically eliminate frequencies linked to annoying drones, leaving behind a deep and enriched exhaust tone.

• Visual Impact: The system boasts oversized 90mm quad slash-cut exhaust tips, enhancing the visual appeal by filling the factory exhaust cutouts with a high-end sporty appearance.

• Precise Fitment: Advanced 3D scanning and cutting-edge software guarantee an optimal exhaust size and fitment for Audi B9 S4 models. Crafted from mandrel-bent T304L stainless steel, the piping resists corrosion, while meticulous hand TIG welding ensures lasting durability.

• Engineered Longevity: Multi-point and boxed-in hanger mounts adeptly absorb engine movement and exhaust weight, offering robust support against stress, rattles, and potential damage. The exhaust system incorporates dual 2.5" piping sections, reinforced and bridged to disperse stress and safeguard against leaks and rattles.

• Seamless Assembly: The exhaust system employs wide-width stretch clamps, a proven method in high-end OE applications, to create secure and leak-free connections. This guarantees enduring reliability and a seamless exhaust note over time.

The IE Catback Exhaust System elevates the driving experience by blending performance, aesthetics, and craftsmanship. It delivers an unmatched sound signature without compromise, enhancing the essence of driving an Audi B9/B9.5 S4.

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