Unleash the sound your S55 engine was meant to deliver with the Fi Exhaust Front Pipe + Mid X-Pipe + Valvetronic Muffler system for the BMW F80 M3 and F82/F83 M4. Designed for drivers who want a deep, aggressive, and exotic exhaust character without sacrificing daily drivability, this system maximizes flow and elevates the M-car experience in every mode.

The upgraded front pipe removes factory restrictions to improve throttle response and sharpen turbo spool. The mid X-pipe equalizes exhaust pulses between the banks, reducing drone and smoothing the high-RPM tone into a clean motorsport-style wail. Paired with Fi’s precision-built Valvetronic muffler, the exhaust seamlessly integrates with your car’s OEM valve control — no remote needed. Use Comfort mode for a civilized, refined tone; switch to Sport/Sport+ and the valves open for an unmistakable Fi roar.

Finished with bold Quad Silver Tips, the system delivers both performance and visual impact. Built from premium T304 stainless steel and handcrafted with TIG welds, this kit ensures durability, perfect fitment, and consistent performance whether you’re on the street or at the track.

If you want maximum sound quality, better flow, and OEM-like valve integration, this is the ultimate Fi solution for your M3/M4.


Features

  • Complete turbo-back upgrade: Front Pipe + Mid X-Pipe + Valvetronic Muffler + Quad Tips
  • Retains OEM valve settings — no additional controller required
  • Deep, aggressive tone with valves open; refined and quiet when closed
  • X-pipe design reduces drone and enhances exhaust pitch
  • Premium T304 stainless steel construction
  • Hand TIG-welded for precision and durability
  • CNC flanges ensure a perfect seal and installation
  • Direct bolt-on fitment
  • Compatible with both stock and tuned S55 setups

Compatibility

  • BMW F80 M3 – 2014–2020
  • BMW F82 M4 – 2014–2020
  • BMW F83 M4 Convertible – 2014–2020
  • Engine: S55 3.0L Twin Turbo
  • Retains OEM valve control