ARM Motorsports M240i SINGLE EXIT EXHAUST

The ARM Motorsports M240i Single Exit Exhaust is engineered for enthusiasts who want the most aggressive exhaust tone and the lightest possible setup for their B58-powered BMW. Designed as the final section of the full ARM exhaust system, this axle-back connects directly to the ARM M240i Midpipe, extending the 3.25-inch piping to a single passenger-side exit. The result is a straight-through, muffler-delete system that transforms the sound of the B58 engine with an exotic, high-volume tone.

Constructed from high-quality T304 stainless steel and mandrel-bent for optimal exhaust flow, this system provides substantial weight reduction—over 20 pounds compared to the OEM exhaust. With zero cutting, trimming, or permanent modifications required, installation can be completed in approximately 45 minutes using basic tools. This makes it an ideal upgrade for drivers who want a dramatic sound experience while maintaining the ability to return to stock at any time.

When paired with the ARM B58 Downpipe and ARM M240i Midpipe, this single exit exhaust delivers maximum flow, improved throttle response, and the most direct exhaust path available for the B58 platform.

Fitment:

Fits the following BMW B58 models:

• BMW F22 M240i (3.0L B58)
• BMW F22 M240i xDrive (3.0L B58)
• BMW F23 M240i (3.0L B58)
• BMW F23 M240i xDrive (3.0L B58)
• BMW F30 340i (3.0L B58) – M Sport bumper only
• BMW F30 340i xDrive (3.0L B58) – M Sport bumper only
• BMW F30 M340i (3.0L B58) – M Sport bumper only
• BMW F30 M340i xDrive (3.0L B58) – M Sport bumper only
• BMW F32 440i (3.0L B58)
• BMW F32 440i xDrive (3.0L B58)