2020-2026 BMW M3 / M4 S58 Valved Catback Exhaust | G80 G81 G82 G83

Give your BMW M3 or M4 the aggressive exhaust note the S58 twin-turbo inline-six deserves with the 3SD Performance Valved Catback Exhaust System.

Designed for the BMW G80 M3, G81 M3 Touring, G82 M4 Coupe, and G83 M4 Convertible, this performance exhaust delivers a deeper, more aggressive sound while retaining the ability to control exhaust volume when you want a quieter driving experience.

Whether you're looking for a more exciting daily driver or building a tuned S58-powered M3/M4, the 3SD Performance valved exhaust provides the sound, appearance, and flexibility the platform needs.

Hear the S58 the Way It Should Sound

The factory M3 and M4 exhaust system keeps the S58 relatively subdued. The 3SD Performance system opens up the exhaust note with a deeper idle, more aggressive acceleration, and stronger tone throughout the RPM range.

With the valves open, the system delivers the aggressive sound expected from a high-performance BMW M car.

Close the valves when you want a more refined exhaust note for cruising, neighborhoods, or longer highway drives.

Key Features

• Valved performance exhaust system
• Designed for the BMW S58 3.0L Twin-Turbo engine
• Deeper and more aggressive exhaust tone
• Increased exhaust presence under acceleration
• Valve-controlled quiet and aggressive sound modes
• Improved exhaust flow compared with the restrictive factory system
• Performance-oriented catback design
• Premium appearance
• Designed specifically for the G8X M3/M4 platform
• Excellent upgrade for stock or tuned vehicles

Valve-Controlled Exhaust

Why choose between a quiet exhaust and an aggressive exhaust when you can have both?

The valve-controlled design allows the exhaust character to change depending on valve position.

Valves Closed: Reduced exhaust volume and a more refined tone that's better suited for cruising and everyday driving.

Valves Open: Maximum exhaust sound with a significantly more aggressive S58 tone during acceleration and high-RPM driving.

This makes a valved exhaust especially well suited to M3 and M4 owners who daily drive their cars but still want an aggressive performance exhaust when the road opens up.

Designed for the BMW S58

The BMW S58 3.0L twin-turbocharged inline-six has quickly become one of BMW M's most popular modern performance engines.

The 3SD Performance exhaust is designed around the airflow, packaging, and sound characteristics of the S58-powered G8X platform.

Pair it with additional modifications such as:

• Performance downpipes
• High-flow catted downpipes
• Intake systems
• Turbo inlet upgrades
• ECU tuning
• Upgraded turbochargers
• Flex-fuel or ethanol setups

The result is an exhaust system that can work equally well on a lightly modified street car or as part of a higher-horsepower S58 build.

Vehicle Fitment

BMW M3

2020-2026 BMW G80 M3
2020-2026 BMW G80 M3 Competition
BMW G81 M3 Touring*
BMW G81 M3 Competition Touring*

BMW M4

2020-2026 BMW G82 M4 Coupe
2020-2026 BMW G82 M4 Competition Coupe
2020-2026 BMW G83 M4 Convertible
2020-2026 BMW G83 M4 Competition Convertible

Engine: BMW S58 3.0L Twin-Turbo Inline-6

*G81 availability and fitment may vary by market and model year. Verify exact vehicle configuration before ordering.

Perfect for Stock and Tuned M3/M4 Builds

The G80 M3 and G82 M4 are capable of substantial performance gains with relatively simple modifications.

A performance exhaust is an excellent upgrade for owners looking to improve the character of their car without sacrificing its ability to function as a comfortable street vehicle.

For higher-output builds, the freer-flowing exhaust system also complements upgraded downpipes, intake systems, tuning, and turbocharger modifications.

Aggressive Styling

An M3 or M4 exhaust shouldn't just sound better — it should look the part.

The 3SD Performance system gives the rear of the G8X platform a more performance-oriented appearance while maintaining the aggressive quad-exhaust layout associated with BMW M cars.

Multiple exhaust-tip options may be available depending on configuration.

Installation

Designed as a replacement for the factory exhaust system.

Professional installation is recommended to ensure correct exhaust alignment, valve operation, clearance, and tip positioning.

Exact installation requirements can vary depending on model, drivetrain, and existing aftermarket modifications.

What's Included

• 3SD Performance Valved Exhaust System
• Valve-equipped muffler sections
• Exhaust tips
• Required clamps/hardware as supplied with the system