BMW M3 G80 M4 G82 G83 CATLESS DOWNPIPES

• Catless design for maximum airflow and performance gains
• Mandrel-bent T304 stainless steel or optional titanium construction
• CNC-machined flanges ensure perfect OEM fitment
• High-precision TIG welds for durability under extreme heat
• Integrated O2 sensor ports for ECU monitoring and tuning
• Compatible with OEM and aftermarket mid-pipes and exhaust systems
• Reduces turbo lag and sharpens throttle response

• 1 x Pair of catless downpipes
• Mounting hardware and gaskets

• BMW M3 G80 Sedan 2021–2025
• BMW M4 G82 Coupe 2021–2025
• BMW M4 G83 Convertible 2021–2025

• Bolt-on replacement for factory downpipes; requires removal of OEM catalytic converters and mid-pipe disconnect.
• Professional installation is highly recommended due to high-temperature welded construction and tight engine bay fitment.
• ECU tune is essential to eliminate check engine light and optimise performance; contact Project Styling for tuning recommendations.
• Suitable for track and off-road use; verify local regulations before road use.

Will these downpipes fit my BMW M3 G80 or M4 G82/G83?
Yes, these downpipes are engineered specifically for all G80 M3 and G82/G83 M4 models fitted with the S58 3.0L twin-turbo engine from 2021 onwards.

Do I need an ECU tune with these downpipes?
An ECU tune is highly recommended to eliminate the check engine light, optimise performance gains, and prevent boost loss. Contact Project Styling for tuning guidance.

Are these street legal?
These catless downpipes are designed for track and off-road use only. Verify local emissions regulations before road use, as they are not street legal in many jurisdictions.

What performance gains can I expect?
With a supporting ECU tune, you can expect approximately 25–40 HP and 30–45 lb-ft additional torque, plus improved turbo spool efficiency and sharper throttle response.