The CRT Performance Single Midpipe is a high-performance center exhaust section designed for BMW X3M and X4M owners seeking improved exhaust flow, enhanced power, and a more aggressive sound.
By removing the restrictive factory OPF/GPF filters and utilizing a single 3.5-inch free-flowing pipe, this midpipe significantly reduces backpressure, improving turbo response, throttle precision, and overall engine performance.

The result is a noticeable power gain, sharper turbo spool, and a deep, motorsport-inspired exhaust tone that transforms the sound of your S58 engine into something truly special — powerful, resonant, and refined.

Why Choose CRT Performance Single Midpipe

• Increased power and torque – optimized exhaust flow for better turbo efficiency.

• Aggressive, deep exhaust note – pure M Power character without excessive drone.

• Premium SS304 stainless steel – high heat and corrosion resistance.

• Perfect OEM fitment – Plug & Play installation, no cutting or welding required.

• Effortless installation – direct replacement for the stock midpipe.

OPF Delete – Important Information for EU-Spec Vehicles

This midpipe removes the factory OPF/GPF filters and is intended for off-road and track use only.
Removal of the OPF may cause a Check Engine Light (CEL) or ECU limp mode.

CRT recommends using:

• OPF-delete cables

• CAN MIL-delete module
  to prevent software and diagnostic issues.

Construction & Materials

• Material: Premium SS304 stainless steel

• Welding: High-precision TIG process

• Installation: Plug & Play – no cutting or modifications

• Durability: Built to withstand high temperature and track-level stress

Compatibility

• BMW X3M F97 (2019+)

• BMW X4M F98 (2019+)