S55 Catless Downpipes -M3/M4 F8X

Catless Downpipes – S55 Engine | BMW M3/M4 F80/F82/F83 (2015–2020)

Unleash the full power and sound of your BMW M3 or M4 with our S55 Catless Downpipes. Designed to dramatically improve exhaust flow, turbo response, and overall performance, these downpipes are the go-to upgrade for F8X owners looking to take their build to the next level.

Key Features:

• 🔥 Maximized Power & Flow
  Removes the restrictive factory catalytic converters to reduce backpressure, increase turbo efficiency, and unlock serious horsepower gains.

• 🏁 Aggressive Exhaust Note
  Amplifies the deep tone of the S55 twin-turbo inline-6 with sharper turbo spool, more pronounced pops, and aggressive overrun sounds.

• ⚙️ Direct Bolt-On Fitment
  Engineered for perfect fitment on the F80/F82/F83 chassis. Compatible with OEM or aftermarket exhaust setups.

• 🛠️ High-Quality T304 Stainless Steel
  Durable construction with TIG welds, mandrel bends, and CNC-machined flanges ensures long-lasting performance and maximum flow.

• ⚡ ECU Tune Recommended
  An ECU tune is strongly recommended post-installation to avoid check engine lights and fully optimize gains.

Vehicle Compatibility:

• BMW M3 F80 (2015–2018)

• BMW M4 F82 Coupe / F83 Convertible (2015–2020)

• For vehicles equipped with the S55 Twin-Turbo Inline-6 Engine

Note: These downpipes are intended for off-road and race use only. Not CARB compliant. Please check your local emissions laws prior to installation.