S55 M3 M4 M2CS 3" Catted Downpipes

  • $999.99
Tax included. Shipping calculated at checkout.


Gain more horsepower and torque with our Roundel Werk S55 Catted Downpipes.  Easy horsepower and response improvements without the smell!

With increased exhaust flow, this is a must have modification that you will truly feel!

This kit includes new mounting hardware.  We do recommend replacing gaskets to reduce the risk of any leaks.

  • High Flow 200 Cell Catalytic Converters
  • More power and torque through entire rev range
  • Faster turbo spooling
  • 304 Brushed Stainless Steel
  • TIG Welded
  • Fits F80/F82/F83 BMW M3 & M4 and F82 BMW M2 Competition / CS
  • Mandrel bent tubing for increased flow
  • S55 Engine fitment only.  Will not standard M2

For off-road use only.  Includes 1 Year Warranty.

Fitment Applications: 

2015 - 2018 F80/F82/F83 BMW M3 & M4
2018+ F82 BMW M2 Competition / CS