Valved exhaust system cat-back FMIC.Pro for Mercedes Benz C class C400 C450 C43 AMG W205 3.0T 2015-2023

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.

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

Pipe diameter: 76mm / 3.0”

Engine: 
-3.0 V6 Biturbo M276

Fitment:
-Mercedes-Benz C400 4MATIC W205 Sedan 3.0 V6 333 HP 2015-2020
-Mercedes-Benz C450 AMG 4MATIC W205 Sedan 3.0 V6 367 HP 2015-2016
-Mercedes-AMG C43 4MATIC W205 Sedan 3.0 V6 367 HP / 390 HP 2016-2021
-Mercedes-AMG C43 4MATIC C205 Coupé 3.0 V6 367 HP / 390 HP 2016-2023

The design of the system corresponds to the solution used in the standard factory AMG Sport Exhaust system (U21). In this configuration, the two front exhaust sections merge into a single centre pipe, which then splits again before the rear mufflers.

In vehicles equipped with a GPF/OPF filter and the factory AMG Performance Exhaust system, the connection method may vary depending on the equipment version. Before installation, the type of the factory exhaust system and its connection method should be verified.


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