M240i SINGLE EXIT EXHAUST

The ARM M240i Single Exit Exhaust is the final step in your M240i exhaust build — for the all-in enthusiast chasing the lightest, loudest setup available. Completely removing the muffler and all resonators, it gives the most direct flow of exhaust from your B58 out to a passenger-side single 3.25" tip, with an engine note that screams.

Highlights

• Exotic exhaust note — muffler and resonators fully removed.
• Shaves 20+ lbs off the OEM exhaust.
• Full straight-pipe 3.25" system, zero cutting required.
• Fits OEM and OEM-fitment diffusers.

Construction

• High-quality T304 stainless steel with mandrel-bent curves.
• Axle-back section only — connects to the ARM M240i Midpipe (required) and secures to the passenger-side hanger, leaving a single 3.25" tip.
• Swaps in roughly 45 minutes with a basic tool set; reversible to a stock muffler later.

Fitment (B58 3.0L)

BMW F22/F23 M240i & xDrive, F30 340i & M340i, F32 440i. For F3X 340i/440i this fits the M-Sport bumper only, not the base bumper.

What's included: ARM B58 single exit exhaust, exhaust clamp.

Backed by ARM Motorsports' lifetime warranty against defects in craftsmanship and fitment.

Emissions disclaimer: This product is intended for off-road, race, or closed-course competition use only and is not legal for use on pollution-controlled vehicles operated on public roads in most states and provinces. You are responsible for compliance with all applicable emissions laws. Please check your local laws before purchase and installation.

Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.