Active Autowerke Chassis Brace (G2X Brace) – BMW M340i / M440i (B58)

OVERVIEW

The Active Autowerke G2X chassis brace replaces the factory brace on the G-chassis M340i and M440i to open up clearance for larger aftermarket exhaust piping without giving up rigidity. It is machined from 6061 aluminum.

SPECS

• OEM chassis-brace replacement
• 6061 aluminum construction
• Adds clearance for larger exhaust systems while maintaining rigidity

PARTS INCLUDED

• G2X chassis brace

TECH RESOURCES

Additional Parts Required

• None.

Installation

• Bolt-in replacement of the factory brace; professional installation is recommended.

Notes

• This brace is included with the 2024-and-older variant of the Active Autowerke M340i / M440i mid-pipe (the 2025+ variant ships with the Active brace); it is offered here separately.

PART NUMBER

• 11-129

VEHICLE APPLICATIONS