The CRT Performance Single Midpipe 3.5” is a precision-engineered upgrade designed to unlock the full potential of your BMW M3 or M4 equipped with the S58 engine. With a larger 3.5-inch (88.9 mm) diameter and free-flowing single-pipe design, this midpipe dramatically reduces exhaust backpressure, improving turbo spool, throttle response, and overall performance.

The result is a noticeable increase in power, a sharper, faster throttle feel, and a deeper, more aggressive exhaust tone that enhances the true character of the M3/M4 — both on the street and the track.

Why Choose the CRT Performance Single Midpipe 3.5”

• Improved Power and Flow Efficiency – optimized 3.5” diameter minimizes restrictions for maximum performance.

• Aggressive, Motorsport-Inspired Sound – deep, resonant tone that defines the S58 engine.

• Premium Stainless Steel Construction (T304) – built to withstand extreme temperatures and resist corrosion.

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

• Effortless Installation – direct replacement for the factory midpipe.

• Backed by CRT Performance Warranty – 2 Years – proven reliability and craftsmanship.

Materials & Construction

• Material: High-grade T304 stainless steel

• Diameter: 3.5” (88.9 mm)

• Welding: Precision TIG for maximum durability

• Flanges: CNC-machined for perfect sealing and fitment

• Fitment: Direct Plug & Play – no modifications required

Technical Information

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

To avoid software issues, CRT recommends using:

• OPF-delete cables

• CAN MIL-delete module.

Compatibility

• BMW M3 G80 Sedan (2020+)

• BMW M3 G81 Touring (2022+)

• BMW M4 G82 Coupe (2020+)

• BMW M4 G83 Convertible (2020+)