BMW G8X Valved Catback Fitment & Setup Guide: G80 M3 - G82 M4 - G87 M2

Why Choose a Valved Catback?

A valved catback lets you change the character of your exhaust depending on how you are driving. Keep the system more relaxed when you want a quieter experience, then open the valves when you want a stronger exhaust note.

The IRL V2 G80 G82 G83 Catback Valved Exhaust is built for BMW G8X owners who want that flexibility in a complete rear exhaust setup.

BMW G8X Fitment

This platform includes the S58-powered:

• G80 M3
• G82 M4
• G83 M4 Convertible

Before ordering, confirm your chassis, model year, drivetrain, and current exhaust configuration. If you already have aftermarket downpipes, midpipes, or an axleback installed, verify how those parts connect to the catback you are considering.

How the Valve System Fits Into the Build

The valved catback works with the exhaust valve hardware in the system. For additional control, the IRL V2 Valve Controller can be considered for compatible configurations. Check the product instructions and connector requirements before ordering a controller for an existing exhaust.

Build Options

Valved catback with stock downpipes

This is a straightforward path when your priority is adding more control and changing the rear exhaust character without replacing the downpipes. Confirm the rest of your exhaust configuration before installation.

Valved catback with upgraded downpipes

Pairing a valved catback with upgraded downpipes creates a more complete exhaust build. If you are considering catted or catless downpipes, review the local emissions and noise requirements that apply to your vehicle and intended use.

Valved catback with a modular midpipe

For a flexible system, compare the catback with the IRL V2 Modular Midpipe G8X. Confirm the exact combination and connection points before mixing exhaust sections.

Ordering Checklist

• Confirm the car is a G80, G82, or G83 G8X model.
• List the downpipe, midpipe, axleback, and valve components already installed.
• Check whether your selected setup is complete or modular.
• Review included hardware and the valve-control requirements on the product listing.
• Check local noise and emissions requirements before installing an aftermarket exhaust.
• Contact IRL if you need help matching the catback to another brand's exhaust components.

Installation Planning

Let the exhaust cool completely before working underneath the vehicle. Use safe lifting equipment and support the exhaust sections during removal and installation. Keep the system clear of the underbody, heat shields, driveshaft, suspension, and other moving components.

After installation, inspect the connections and check for leaks, rattles, or contact points. Test the valve behavior in a safe location and follow the supplied instructions for any controller or valve setup.

Shop the G8X Exhaust Setup

Start with the IRL V2 G80 G82 G83 Catback Valved Exhaust, compare the V2 Modular Midpipe, or browse the G80 / G82 / G83 M3 collection for platform-matched parts.

Bottom Line

A valved catback is a strong choice when you want more control over your BMW G8X exhaust experience. Confirm chassis fitment and your existing components first, then choose the combination that matches your sound goals, installation plan, and local requirements.