F8X S55 Valved Stainless Steel Catback Exhaust

The S55 is one of BMW's most capable engines, but the factory exhaust doesn't do it justice. Most F8X owners know the struggle, raspy mid-range, muted top-end, and an exhaust note that never quite delivers the inline-six character it should. Thankfully, our F8X S55 Valved Stainless Steel Catback is designed to fix that, giving your M3, M4, or M2 Competition a clean, deep tone without the drone and rasp that plague so many aftermarket options.

T304 Stainless Steel Construction

T304 stainless steel is the industry standard for high-performance exhaust systems. It offers superior corrosion resistance, handles extreme heat without warping, and maintains a clean finish over time. Every pipe is mandrel-bent for smooth airflow, and every joint is TIG-welded for strength and a factory-quality finish.

Valved Sound Control

Quiet mode for the morning commute. Wide open for when you want the neighborhood to know you're leaving. The integrated valve system puts full control of your exhaust note at your fingertips. Every system includes a weighted, premium-feel remote and all wiring for a plug-and-play setup.

Maximum Flow, Maximum Sound

Our single mid-pipe design opens up the exhaust for maximum output and zero restriction. Pair it with our catless downpipes for the full experience—deep tone, instant throttle response, and yes, flames with the right tune. Check the video below to hear and see it in action.

Bolt-On Fitment

Engineered for direct fitment with OEM mounting points. A built-in flex section handles drivetrain movement and makes installation straightforward. No cutting, no guesswork, no headaches.

Tip Options

Multiple exhaust tip designs available to match your setup. Brushed tips pictured.

Key Features

T304 stainless steel construction
Valved muffler with weighted, premium remote
Single mid-pipe for maximum flow and sound
Mandrel-bent piping for optimized airflow
TIG-welded joints throughout
Direct bolt-on fitment with flex section
Lighter than factory exhaust
Flame-friendly with the right setup
Multiple tip options available

What's Included

Full T304 stainless steel catback exhaust system
Valved muffler with controller and wiring harness
All necessary hardware and gaskets
Flex section for simplified installation

Fitment

2015–2020 BMW F80 M3 (S55)
2015–2020 BMW F82 M4 Coupe (S55)
2015–2020 BMW F83 M4 Convertible (S55)
2018–2021 BMW F87 M2 Competition (S55)

Lead Times

Prep & Packaging: 5–7 days
Oversized Freight Shipping: 7–10 days

Order Terms

Because each exhaust is built to order, all sales are final. By purchasing, you acknowledge and agree to these terms. This product is for off-road use only.