Unlock the true personality of your S55-powered BMW F80 M3 or F82 M4 with the Fi Exhaust Single Front–Mid Pipe + Valvetronic Muffler system. Designed to eliminate the restrictive factory layout, this upgrade delivers a fuller, deeper, and more aggressive exhaust tone that transforms your driving experience — all while maintaining seamless OEM valve control.

The streamlined single front–mid pipe smooths exhaust flow and reduces turbulence, giving the S55 engine a richer note with improved throttle response. Paired with Fi’s precision-engineered Valvetronic muffler, the system allows you to switch instantly between quiet and aggressive modes using your factory drive settings — no remote, coding, or extra electronics required.

With the valves closed, the exhaust stays refined and neighbor-friendly. Open the valves, and the car unleashes a sharp, exotic, motorsport-inspired soundtrack with enhanced turbo spool and a cleaner high-RPM scream. The included Quad Silver Tips complete the upgrade with a bold visual statement worthy of an M car.

Hand-crafted from high-grade T304 stainless steel, TIG-welded, and engineered for perfect fitment, this system is built to handle both street and track use while maintaining long-term durability.

Whether your M3/M4 is stock or tuned, the Fi system elevates both sound and performance, letting the S55 engine finally breathe — and be heard — the way it should.

Features

  • Full Fi Exhaust system: Single Front–Mid Pipe + Valvetronic Muffler + Quad Tips
  • Retains complete OEM valve functionality — no remote required
  • Deep, aggressive tone with valves open; refined sound with valves closed
  • Optimized single mid-pipe design improves exhaust flow and reduces rasp
  • Premium T304 stainless steel construction
  • Hand TIG-welded for strength and precision
  • CNC-machined flanges for perfect fitment and leak-free connection
  • Direct bolt-on installation
  • Designed for both stock and tuned S55 engines

Compatibility

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