Active Autowerke Single Merge Midpipe / Center & Centre Pipe for BMW X3 M & X4 M (F97/F98, S58) 2019+ – 304 Stainless Bolt-On Exhaust Middle Pipe/Section Upgrade | AA 11-102

Active Autowerke single centre pipe for BMW X3 M and X4 M S58

Give your F97 and F98 a richer, throatier soundtrack and improved gas flow with this precision engineered centre section from Active Autowerke. Built in 304 grade stainless steel and designed for the S58 platform, this single merge pipe replaces the factory middle section to unlock a deeper tone and a more purposeful character without compromising quality.

By bringing the two banks together earlier and for a longer run, the system blends pulses to create a fuller note that finally lets the S58 sound the part. It is a direct fit upgrade that requires only one cut to the original tube and is fully reversible, using OEM-style flanges and clamp interfaces for a clean installation.

Why enthusiasts choose this centre section

• Transforms the muted factory sound into a deeper, more aggressive rumble
• Smoother exhaust flow for sharper response from the S58
• Works with the stock valved rear silencer and most aftermarket back boxes that retain factory-style connections
• Direct fit and reversible with a single required cut to the OE middle pipe
• Premium 304 brushed stainless construction built to last

Highlights

• 304 stainless steel throughout
• Factory-style flanges and clamp interfaces for straightforward fitment
• Only one cut needed in the original centre section
• One year manufacturer warranty
• Designed to replace the stock middle section for better tone and flow

Fitment

• BMW F97 X3 M 2019 onwards
• BMW F98 X4 M 2019 onwards

Compatibility and pairing

This single merge centre pipe is engineered to connect to systems that keep factory-style joints. It pairs seamlessly with Active Autowerke’s valved axle-back and their GESI catted downpipes if you plan a full system later.

Proven with our customers

We have installed this on multiple X3 M and X4 M builds at MJ Modifications and run it on our own car. Owners consistently praise the richer tone, quality of the welds and the tidy fit. If you want your S58-powered SUV to sound as serious as it performs, this is the centre section to choose.

Installation

Professional fitting recommended. MJ Modifications in Warwickshire can install and align this upgrade for you. Request a fitting quote at info@mjmodifications.co.uk.

Legal notice

For motorsport and off-road use only. Not approved for road use.

Part number

Active Autowerke part number: 11-102

Search terms our customers use

BMW X3 M centre pipe, BMW X4 M centre section, F97 centre pipe upgrade, F98 centre pipe upgrade, S58 centre section, single merge pipe S58, 304 stainless centre pipe, bolt-on centre section BMW, performance centre pipe UK, AA 11-102, BMW X3 M sound upgrade, BMW X4 M sound upgrade, middle pipe F97, middle pipe F98, UK BMW performance exhaust specialist