Valved exhaust system cat-back Dual X-Pipe FMIC.Pro for BMW M3 G80 G81 M4 G82 G83 3.0 S58 2021-

The FMIC.Pro cat-back exhaust system is designed to improve exhaust gas flow and deliver a noticeably sportier sound character.

The 76mm / 3.0”  piping diameter combined with the muffler configuration provides a deeper, fuller tone under load while maintaining driving comfort during normal operation – especially with the valves closed.

The system is manufactured entirely from SS304 stainless steel, resistant to corrosion and high operating temperatures. CNC mandrel-bent piping ensures consistent geometry and precise fitment to factory mounting points. Installation is straightforward and follows a plug & play concept. All welds are performed using TIG welding in an argon atmosphere, ensuring clean, aesthetic, and fully sealed joints – essential for long-term durability.

CNC-machined 10 mm thick flanges are used at connection points. They provide high rigidity, reduce the risk of deformation caused by thermal cycles, and ensure even gasket pressure across the entire surface.

The system features integrated electronic exhaust valves that control exhaust gas routing in the rear section:

Closed mode - exhaust gases pass through the full silencing section, delivering a refined sound and high comfort for daily driving.

Open mode - exhaust gases bypass the rear muffler, resulting in a louder, more direct, and sportier exhaust tone.

This solution allows the driver to adjust exhaust characteristics depending on driving conditions and preferences. Valve control is operated via the included control module and two remote fobs, allowing instant switching between modes.

Dual X-Pipe Version

The Dual X-Pipe version uses two separate pipes running through the central section of the exhaust system, connected by an X-Pipe. This solution allows exhaust pulses to interact between both sides of the system and contributes to a different acoustic character compared with the Single Mid-Pipe version.

This design tends to produce a sharper, more pronounced sound with a greater presence of higher frequencies. The difference is usually particularly noticeable as engine speed increases, when the sound becomes more intense and dynamic, giving the exhaust system a sportier character.

The Dual X-Pipe is a good choice for those who prefer a more dynamic and pronounced exhaust note instead of a deep, bass-heavy tone.

If you are looking for a deeper, more bass-focused sound with a single pipe in the central section of the exhaust system, check the Single Mid-Pipe version, SKU: FP-EXHAUST-088.

For maximum performance potential, it is recommended to pair the FMIC.Pro cat-back system with a high-flow downpipe (especially for turbocharged engines).

Exhaust tips: 4 round
Pipe diameter: 76mm / 3.0”

Engine: 
3.0 R6 Twin Turbo S58

Fitment:
-BMW M3 / M3 Competition / M3 Competition M xDrive G80 Sedan 2021-
-BMW M3 Competition M xDrive G81 Touring 2022-

-BMW M4 / M4 Competition / M4 Competition M xDrive G82 Coupé 2021-
-BMW M4 Competition M xDrive G83 Cabrio 2021-


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