Introducing the IRL Full Modular Catback the ultimate performance upgrade for the G80 M3. Building on the success of our Modular Midpipe, this system is designed to maximize exhaust flow with a true single layout. Available in stainless steel or titanium, it delivers performance gains you can feel. Designed for those pushing the limits the IRL Full Modular Catback strikes the perfect balance of power, sound, and precision without sacrificing drivability. Modular Catback does not include a valve controller kit. Key Benefits: 13–25% increase in flow (depending on downpipe setup) Significant weight savings with titanium Controlled cold starts via single-valve system Engineered for enthusiasts who demand more, the IRL Full Modular Catback strikes the perfect balance of power, sound, and precision without sacrificing drivability.
