Akrapovic BMW G80/G82 M3 & M3 Competition, M4 & M4 Competition Catless/Decat Downpipe (S58, 2021+) DP-BM/SS/9 – Stainless Steel, OPF/GPF Compatible, Track Use Only

Akrapovic De-cat Turbo Down Pipe for BMW G80 G82 M3 and M4 S58, OPF GPF Compatible, Part No. DP-BM/SS/9

Turn your G80 M3 or G82 M4 into a true track weapon with this Akrapovic race down pipe. Built from corrosion-resistant stainless steel and engineered specifically for the twin-turbo S58 engine, this straight-through turbo outlet maximises exhaust gas flow, reduces back pressure and unleashes a fierce, motorsport soundtrack. Designed for vehicles equipped with OPF GPF, it integrates perfectly with Akrapovic’s titanium rear section and Evolution link pipes for a refined, drone-free cruise and spine-tingling tone under load.

Why enthusiasts choose this S58 race pipe

• High-flow de-cat design for sharper turbo response and stronger mid-range punch
• Raw, race-bred sound character when paired with the Akrapovic titanium rear silencer and Evolution link pipes
• Stainless steel construction for durability and consistent performance under heat
• Saves around 4.5 kg compared with the factory component
• Compatible with OPF GPF cars on the G80 G82 platform
• Optimised to work seamlessly with Akrapovic titanium systems for S58
• Part Number: DP-BM/SS/9

Fitment

• BMW G80 M3 2021 onwards
• BMW G80 M3 Competition 2021 onwards
• BMW G82 M4 2021 onwards
• BMW G82 M4 Competition 2021 onwards

What you will notice

Faster spool, crisper throttle pick-up and a hard-edged tone that suits the character of the S58 straight-six. On cars running the matching Akrapovic titanium back box and link pipes, cabin refinement remains civil at cruise while the exhaust note comes alive when you lean on it. This is the go-to de-cat pipe for drivers prioritising lap-time, response and soundtrack on track days.

Recommended pairing

For the best results, combine with the Akrapovic titanium Slip-On rear silencer and the Evolution Link Pipe Set for S58. This combination delivers optimum flow and the most coherent sound package for G80 G82.

Installation and ECU calibration

Professional fitting is strongly advised. An ECU remap is required to prevent warning lights after removing the catalyst. For installation and mapping support, contact MJ Modifications in Warwickshire for a quote at info@mjmodifications.co.uk.

Important information

• For closed-course motorsport use only
• Not compliant for public road use
• ECU recalibration required

Trusted by us and our customers

We run this hardware on our own S58 builds and many customer cars. Feedback is consistently excellent on fit, finish, sound and drivability when correctly calibrated.

Manufacturer and warranty

• Manufacturer: Akrapovic
• Warranty: 1 year manufacturer warranty

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