BMW G80/G82/G87, M3/M4/M2 Stainless Steel Tapered Merge Mid Pipe

A stainless steel tapered merge mid pipe for the BMW G80 M3, G82 M4 and G87 M2 - twin 76mm front pipes run side by side and blend gradually into a single 89mm centre pipe, then split again to connect straight to the factory rear section.

Built for the twin-turbocharged S58, this mid pipe replaces the factory centre section between the downpipes and the rear muffler. Instead of joining the two pipes at a sharp junction, the front pipes are welded together along a long tapered merge collector, so the flow from both turbochargers combines smoothly into one 89mm pipe. The result is a deeper, smoother single-pipe note with less turbulence through the middle of the system.

Manufactured from mandrel-bent stainless steel with precision TIG welding throughout, with a braided flex section to absorb engine movement, and supplied with the support bracket plate, connecting sleeves and clamps.

Key Features

Tapered Merge Collector

The two 76mm front pipes run side by side and taper into each other over a long welded collector, merging the exhaust gradually rather than at an abrupt junction for smoother flow and a cleaner tone.

89mm Single Centre Pipe

Both banks flow through one 89mm centre pipe, replacing the factory dual-pipe layout and giving the S58 a deeper, more unified single-pipe sound.

Works With The Factory Rear Section

The outlets split back to twin pipes and slide straight onto the factory rear muffler, so the OEM valves and tips stay in place - or pair it with an aftermarket rear section later.

Braided Flex Section

An integrated braided flex joint absorbs engine and drivetrain movement, reducing stress on the welds and helping prevent rattles and cracking over time.

Multi-Piece Clamped Design

Band-clamped joints along the centre section make the mid pipe easier to manoeuvre into place and allow fine adjustment of alignment during installation.

Stainless Steel Construction

Mandrel-bent stainless throughout for consistent bore, corrosion resistance and long service life, with clean, precise TIG welds at every joint.

Complete Kit With Bracket Plate

Supplied with the support bracket plate, slip-fit connecting sleeves and band clamps needed to join the mid pipe to the rear section.

Direct Bolt-On Fitment

Designed specifically for the G80, G82 and G87 using the factory mounting locations, bolting straight to the downpipe outlets for straightforward installation.

Performance Benefits

When paired with supporting modifications and tuning, this mid pipe can provide:

• Increased exhaust flow and reduced backpressure
• Faster turbo spool and improved throttle response
• A deeper, smoother single-pipe exhaust tone
• Weight reduction over the factory centre section

Performance gains may vary depending on supporting modifications and tuning.

Vehicle Fitment

BMW G80 M3 (2021+)
BMW G82 M4 (2021+)
BMW G87 M2 (2023+)

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

This product is intended for off-road or motorsport use where applicable.
Customers are responsible for checking local noise and emissions regulations before installation.

Why Choose Proven Performance Parts

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