M240i MIDPIPE UPGRADE

The ARM M240i Midpipe transforms the sound of your B58, delivering the aggressive exhaust note a tuned M240i deserves. It deletes the two central resonators found in the stock midpipe while retaining the OEM muffler — so you keep volume control. Drop into Sport Plus to hear the B58 sing, or Comfort to cruise the neighbourhood quietly.

Highlights

• Improved, more aggressive exhaust note.
• Over 20 lbs lighter than OEM (with the full single-exit setup).
• Retains the OEM muffler for volume control.
• SS304 stainless steel with smooth mandrel-bent tubing.

Construction

• Designed and tested in-house on ARM's own M240i for precise fitment and clearance, even on lowered suspension.
• Fits the OEM downpipe or any upgraded downpipe that mates to the OEM midpipe.
• Full 3.25" system in two sections joined by a slip-fit connection and performance-grade clamps.
• Optional ARM Single Exit Exhaust converts it to a full 3.25" straight-piped system for maximum volume and weight savings.

Fitment

BMW F22 M240i & M240i xDrive, B58 3.0L.

What's included: B58 midpipe front section, B58 midpipe rear section, 4x exhaust clamps (ARM Single Exit Exhaust optional).

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.