BMW F97, F98/ X3M, X4M Big Single Mid Pipe

Transform the sound, flow, and character of your S58-powered BMW with this Big Single Mid Pipe Conversion for the BMW F97 X3M & F98 X4M — engineered to deliver a deeper exhaust note, improved exhaust flow, and a more connected driving experience.

The factory S58 exhaust system utilises a dual midpipe configuration designed to prioritise refinement and emissions compliance. This upgraded big single mid pipe replaces the restrictive factory section with a larger, free-flowing single-pipe design that allows exhaust gases to merge more efficiently — producing a deeper, smoother, and more exotic exhaust tone while improving overall exhaust efficiency.

Constructed from premium mandrel-bent stainless steel and precision TIG welded throughout, this system is built to handle increased exhaust temperatures and power levels while maintaining excellent fitment and durability.

Whether paired with the factory rear section or combined with aftermarket downpipes and valved exhaust systems, this upgrade unlocks a more aggressive S58 sound profile while enhancing overall exhaust performance.

Key Features

Big Single Mid Pipe Conversion Design

Replaces the restrictive factory dual midpipe layout with a large-bore, high-flow single-pipe configuration.

Improved Exhaust Flow

Reduces restriction and allows smoother exhaust gas evacuation for improved performance potential.

Premium Stainless Steel Construction

Manufactured from high-grade stainless steel for durability, corrosion resistance, and long-term reliability.

Mandrel-Bent Tubing

Maintains consistent pipe diameter throughout the system for unrestricted exhaust flow.

Precision TIG Welded

Clean and durable welds built to withstand high-performance driving and elevated exhaust temperatures.

Direct Bolt-On Fitment

Designed specifically for the BMW S58 platform using factory mounting locations, and supplied with the clamps required for installation.

Performance Benefits

• Deeper and more exotic exhaust tone
• Reduced rasp and smoother sound delivery
• Increased exhaust flow and efficiency
• Enhanced throttle response
• Improved top-end breathing when paired with supporting modifications
• Excellent foundation for Stage 1, Stage 2, and high-power builds

Performance gains may vary depending on tune quality and supporting modifications.

Sound Characteristics

Compared to the factory system, a big single mid pipe typically delivers:

• Deeper exhaust note
• More pronounced cold starts
• Increased exhaust volume under load
• Cleaner high-RPM sound profile
• More exotic and motorsport-inspired tone

Vehicle Fitment

BMW F97 X3M (2019–2024)
BMW F97 X3M Competition (2019–2024)

BMW F98 X4M (2019–2024)
BMW F98 X4M Competition (2019–2024)

3.0L Twin-Turbocharged S58 Engine

Which OPF Option Do I Need?

European-delivered cars are fitted with a particulate filter (OPF/GPF) in the exhaust. Australian and North American cars are not. The two specifications use different exhaust hardware, so choosing correctly ensures a precise, bolt-on fit.

NON OPF - AU/US SPEC — for vehicles delivered new in Australia, New Zealand, the United States or Canada.

OPF EQUIPPED - EU SPEC — for vehicles delivered new in the European Union or the United Kingdom.

UNSURE - CONTACT US — select this and our team will confirm the correct specification against your VIN before dispatch.

Please Note

Sound characteristics may vary depending on whether factory or aftermarket downpipes and rear exhaust systems are installed. Professional installation is recommended.

Why Choose Proven Performance Parts

We specialise in high-performance parts for European vehicles — particularly Volkswagen GTI & R models, Audi S/RS, and BMW M applications. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.