The IE Catback Exhaust System for your Audi B9/B9.5 S4 incorporates our in-house engineered DroneTrap technology to deliver a truly aggressive exhaust note without any annoying drone or rasp. Engineered with cutting-edge design features, including mandrel-bent stainless steel, TIG welding, multi-point reinforcements, and oversized quad tips. Experience the elevated and enriched sound your S4 deserves.
- Our proprietary no-drone resonator design
- No cutting, no welding, no hassle
- Large 90mm slash-cut quad tips
- Dual 2.5" piping to support any power output
- Leak free, stamped, & multi-point reinforced
- No check engine light & emissions compliant
Fits Audi B9/B9.5 S4 3.0T. Valved version (IEEXCK13) or Not-Valved version (IEEXCK5) — select above.
