IRL M4 G82/G83 Full Modular Catback

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.

Important Information:

This product is intended for performance use and should be installed by a qualified professional.

It is the customer’s responsibility to ensure compatibility with their specific vehicle prior to purchase. If you are unsure, please contact us before ordering.

Gridline Custom Motorsports is not responsible for issues arising from incorrect installation, misuse, or improper product selection.

Due to the nature of performance parts, some items may be special order and subject to supplier availability and lead times.