Milltek OPF Delete Midpipe for BMW M240i G42 (xDrive & RWD) 2022–2025

Unlock a more aggressive exhaust note from your BMW M240i G42 with the Milltek Sport OPF/GPF Delete Midpipe. Designed to replace the restrictive factory OPF/GPF section, this performance midpipe gives the turbocharged B58 3.0-litre straight-six a deeper, louder and more engaging exhaust sound.

The Milltek OPF Delete Midpipe improves exhaust gas flow by removing the factory particulate filter section, reducing restriction in the exhaust system and creating a much more direct exhaust tone. Under acceleration, the B58 becomes noticeably more aggressive while retaining the quality and precise fitment expected from Milltek Sport.

Manufactured from high-quality stainless steel, the system is engineered for durability, heat resistance and long-term performance.

Key Features

• Designed for the BMW M240i G42 2022–2025
• OPF/GPF delete midpipe for a significantly more aggressive exhaust sound
• Freer-flowing exhaust design with reduced restriction
• Enhances the natural sound of the BMW B58 turbocharged straight-six
• High-quality stainless steel construction
• Precision-engineered Milltek Sport fit and finish
• Ideal for tuned and performance-focused M240i builds
• Compatible with OPF/GPF-equipped vehicles
• Available for use with compatible OE or Milltek rear exhaust configurations
• Designed as a motorsport / race-use exhaust component

More B58 Sound

The factory OPF/GPF system suppresses much of the character of the B58 engine. Replacing the particulate filter section with the Milltek bypass transforms the sound of the M240i, delivering a deeper tone at lower RPM and a much stronger, more aggressive exhaust note when accelerating.

For owners who want their G42 M240i to sound as exciting as it performs, an OPF delete midpipe is one of the most noticeable exhaust upgrades available.

Improved Exhaust Flow

By replacing the restrictive OPF/GPF section, the Milltek midpipe provides a freer-flowing exhaust path with reduced backpressure. This makes it particularly suitable for modified M240i builds where improved exhaust flow is required alongside ECU tuning and other performance upgrades.

Vehicle Compatibility

Vehicle: BMW M240i Coupé
Chassis: G42
Engine: 3.0L B58 Turbocharged Inline-6
Model Years: 2022, 2023, 2024 & 2025
Drivetrain: xDrive & RWD*
Application: OPF/GPF-equipped vehicles

*Please confirm exact vehicle and exhaust configuration before ordering.

Important Installation Information

Depending on the selected version and existing exhaust system, installation requirements may vary. An OPF/GPF bypass module or appropriate ECU calibration may be required to prevent OPF-related warning messages.

Professional installation is recommended.

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