APEX Z EXHAUST™ – F8X M3/M4 Cat-Back System

*Built to order* 3-4 week turnaround time.

Unleash the Sound the S55 Was Always Meant to Have

The True Spec Apex Z Exhaust™ is not just another F8X exhaust system—it’s a complete reimagining of the S55 sound experience. Designed around our signature Apex Z-Pipe architecture, this system transforms the F80 M3, F82/F83 M4 from the raspy, metallic tone the platform is known for into a deep, exotic, high-pitched symphony that stands in a class of its own.

After countless hours of design, testing, and refinement, we created an exhaust that delivers the perfect balance of aggression, tone, and drivability. The result is a uniquely smooth, exotic exhaust note with incredible top-end character, zero drone, and virtually no rasp.

Whether you’re carving canyon roads, attacking a race track, or simply enjoying a backroad drive, the Apex Z Exhaust creates an experience that feels special every time you start the car.

Signature Apex Z-Pipe Technology

At the heart of the system is our proprietary Apex Z-Pipe crossover design.

Unlike traditional X-pipes and equal-length systems, the Apex Z-Pipe was engineered to optimize exhaust pulse scavenging while creating a smoother, more exotic sound signature. The result is:

✓ Reduced rasp and harsh frequencies
✓ Increased exhaust velocity and flow efficiency
✓ Richer midrange tone
✓ Exotic high-rpm scream
✓ Unique sound unlike any other F8X exhaust on the market

This is the defining characteristic that gives the Apex Z Exhaust its unmistakable voice.

Sound Characteristics

Valves Open

• Exotic, high-pitched tone
• Aggressive race-inspired character
• Crisp throttle response
• Incredible top-end scream
• Virtually no rasp
• Track-ready presence

Valves Closed

• Refined and comfortable
• Perfect for daily driving
• Reduced cabin volume
• No unwanted drone
• OEM-like cruising comfort

Included Valve Controller

Every Apex Z Exhaust includes a wireless valve controller at no additional cost.

Take complete control of your exhaust with the touch of a button:

• Open valves anytime
• Close valves anytime
• Retain factory valve operation
• Switch between modes instantly

Whether you want maximum volume or a more refined driving experience, the choice is always yours.

Features

• Proprietary Apex Z-Pipe Design
• Premium T304 Stainless Steel Construction
• Mandrel-Bent Tubing
• TIG Welded Throughout
• Integrated Valved Muffler System
• Wireless Valve Controller Included
• Direct Bolt-On Installation
• Compatible with Factory or Aftermarket Downpipes
• Designed for F80 M3, F82 M4, and F83 M4
• Made for Enthusiasts Who Demand Something Different

The True Spec Difference

The F8X platform has no shortage of exhaust options—but none sound quite like the Apex Z.

Where others chase volume, we focused on creating an exhaust note that feels exotic, refined, and unforgettable. The Apex Z Exhaust delivers the high-frequency scream enthusiasts love while eliminating the harsh rasp that has defined so many S55 systems.

This isn’t just louder.

It’s different.

It’s the sound that makes people turn around, ask what exhaust you’re running, and stay to hear one more rev.

Apex Z Exhaust™

Exotic. Refined. Unmistakable.

*Modify with Purpose.*™