WSTN BMW S55 M3/M4/M2 Competition High Flow Catted Downpipes (F87/F80/F82/F83)

Want your car to sound as good as it looks?

The WSTN Performance S55 Catted Downpipes upgrade your restrictive factory units with a high-flow, premium-grade system designed for drivers who want performance gains without going fully catless. Engineered from T304 stainless steel and built to OEM-level precision, these downpipes deliver faster turbo response, a cleaner, deeper tone, and improved overall efficiency—while maintaining excellent drivability and reduced smell compared to catless options.

Wrapped in integrated thermal heat shielding, they also significantly reduce engine bay temperatures and help maintain consistent performance under hard driving.

Perfect for those wanting performance with a more refined balance.

Why Upgrade?

✅ High-flow catalytic converters reduces backpressure while keeping emissions and smell under control

✅ T304 stainless steel construction for maximum heat resistance and long-term durability

✅ OEM-style heat-shield wrap reduces radiant heat and improves engine bay temps

✅ Mandrel-bent piping ensures smooth, unrestricted exhaust flow

✅ High-quality catalytic core designed for improved flow and reliability

✅ CNC-machined flanges + reinforced welds for OEM-level sealing and perfect alignment

✅ Direct bolt-on installation—no cutting, no welding

✅ Manufactured in the same facilities as premium global brands

✅ Backed by a 1-Year Warranty for complete confidence

Fitment & Compatibility

✔️ BMW M2 Competition (F87, S55) – 2018–2021

✔️ BMW M3 (F80, S55) – 2014–2018

✔️ BMW M4 Coupe (F82, S55) – 2014–2020

✔️ BMW M4 Convertible (F83, S55) – 2014–2020

In the Box

1 × WSTN Performance Catted Downpipe Set (T304 Stainless Steel)

1 x Full Fitting Kit (gaskets and bolts if permitted)

Installation

🛠 Fitment: Direct OEM-style bolt-on

⏱ Install Time: ~1.5–2 hours

🔧 Professional installation recommended for correct torque, sealing, and alignment

Why WSTN Performance?

✅ Genuine T304 stainless steel—no mild-steel or coated substitutes

✅ Precision-engineered specifically for the S55 platform

✅ Build quality equal to leading global performance brands—without the inflated price

✅ 1-Year Warranty on materials and workmanship

Bring Your Car to Life

Refined when you want it.

Brutal when you need it.

Upgrade to WSTN Performance Catted Downpipes for a perfect balance of tone, flow, and daily usability—no compromise, no doubt.

Enjoy the convenience of worldwide shipping on all products.

If upon receiving your product you wish to return it, we offer a 30-day returns policy.

For our in-depth returns information please follow the link below.

"WSTN Performance Shipping And Returns" 

SHIPPING INFORMATION

- We deliver Worldwide

- Most of our products are sent via express methods worldwide (FeDex, DHL, Express Post etc.)

- Full tracking free with every order.

Read more here.

Please note that WSTN Performance recommends installation by trained professionals

We highly recommend having all our products installed by a trained professional who possesses the necessary expertise and utilises the correct tools.

By entrusting the installation to an experienced professional, you can ensure optimal performance and minimise the risk of any potential damage.

WSTN Performance is not liable for any damages caused when installing our products or for potential damages

Your satisfaction and the safety of your vehicle are our top priorities.