CTS Turbo 3 Stainless Steel High-Flow CATS BMW S55 F80 F82 F87 M3/M4/M2 Competition

CTS Turbo is proud to announce the release of our High-Flow CATS for BMW F80/F82 M3/M4/M2 Competition Our stainless steel high-flow CAT 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 strong 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 and is strongly recommended. CEL will illuminate if correct software tuning is not used. Features:

• Large 3"
• 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

Fitment:

• 2015+ BMW S55 M3 (North America)
• 2015+ BMW S55 M4 (North America)
• 2018+ BMW S55 M2C (North America)

Stage 2 software is required to avoid check engine light.

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 6 applications

M3

Make	Model	Engine	Years
BMW	M3		2014–2020
BMW	M3 (F80)		2014–2020

M4

Make	Model	Engine	Years
BMW	M4		2015–2020
BMW	M4 (F82)		2015–2020

M2C

Make	Model	Engine	Years
BMW	M2C		2018–2021
BMW	M2C (F87)		2018–2021

Fitment data last updated: 2026-06-26