BMW F87 M2 Competition Equal Length Valved Sport Exhaust System

Welcome to the Cat-Back exhaust system from Kourstronic for the F87 M2C — the ultimate solution to the S55 sound problem

For a long time, the M2 enthusiast community has complained about the droning and annoying sound coming from the factory system
The M2 Competition suffers from the same problem as its bigger brother, and that's why we developed the perfect solution

Our mission was to bring out the true and hidden sound from the S55 engine
And we let F87C owners experience a sound that matches the driving experience this beast offers

This system consists of a 2.75-inch Midpipe with Equal Length design and H-Pipe
Then, the exhaust merges into a 3.5-inch Axle Back

This setup smooths the exhaust tone and gives you a balanced and clear sound across the entire RPM range
With the valves open, the exhaust comes out directly from the passenger side with an aggressive and open sound
And with the valves closed, the sound passes through a quad-chamber muffler and comes out from the driver's side
A calm tone, perfect for daily walks without disturbing neighbors or “the Karens”

Installation? Directly on the factory mounting points – without cutting or welding
It's time for the M2 Competition to sound like it was supposed to from the start

Sound developments

At Corstronic, our goal is perfection
And we believe our Equal-Length system is the best audio solution for F8X owners
Typically, equal-length systems mellow the tone a bit, but we tested and designed a system that combines sound aggressiveness with listening comfort

Even those used to uneven-length systems won't feel the experience is lacking
The sound is still loud, but balanced and grabs you with every rev

Compatible models:

• M2 Competition from model 2018 and above

• M2 CS model 2020

System specifications:

Made from T304 Stainless Steel or Titanium
Electronic gates support stock control
Independent gate control available as an optional extra
Lighter than the stock system by 20.9 pounds (Stainless)
And lighter by 47.3 pounds (Titanium)
Fully bent with Mandrel-Bent technology for optimal flow
Precise TIG welding for high durability and performance
100% reversible to the original system at any time

Note for S55 engine owners
Because the system is not equipped with resonators (Unresonated), you may notice a slight drone when cruising at low RPM, especially with the Free-Flow downpipe
If you want a smoother sound and higher quality, we recommend using Downpipe 200 Cell or High Flow Cat
Adds a sound stronger than the stock but without the excessive noise