CTS Turbo  |  SKU: #CTS-EXH-DP-0025-CAT

CTS Turbo 3 Inch Stainless Steel High-Flow Cat Competition Downpipe BMW M2 | M3 | M4 2014-2021


This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver here.

CTS Turbo is proud to announce the release of our downpipes for BMW F80/F82 M3/M4/M2 Competition. Our stainless steel high-flow downpipes allow for faster spool, better transient boost response, higher boost, and great sound. Our downpipes are the first part of our modular exhaust system and are compatible with factory mid-pipes and our upcoming CTS Turbo mid-pipes. You should expect 27whp/40ftlbs torque gains when paired with appropriate tuning software. We used CAD simulation to streamline the flow of exhaust gasses and ensure seamless integration with the factory and CTS exhaust components. Many hours of R&D were spent to ensure a perfect fit, smooth exhaust flow, and excellent sound. Use of Bootmod3 software compatible with downpipes is strongly recommended. CEL will illuminate if correct software tuning is not used.


  • Large 3" downpipes
  • Durable 304 food-grade stainless steel
  • Laser-cut flanges
  • Factory-like placement of O2 sensors
  • Designed using the latest 3D scanning technology
  • Exhaust flow simulated with CAD software to ensure optimal flow routing
  • Perfect fit with factory or aftermarket mid-pipes
  • Aggressive sound really makes that S55 scream
  • Bmw S55 M3 (North America) 2015-2020
  • Bmw S55 M4 2015-2020 (North America)
  • Bmw S55 M2c 2018-2020 (North America)


      • Model
        M3, M2
      IMG_9438_2_4b56a9fe-5b4b-4d37-ab14-e16149e0f5c7 - Revline Performance