BMW M5 G90 G99 G9X CATLESS PERFORMANCE EXHAUST DOWN PIPE 24+

• Up to 30–50 hp and 60–80 Nm power gains with ECU tune
• Quicker turbo spool and reduced backpressure for responsive performance
• Raw, aggressive exhaust note with burbles, pops and full turbo sound
• Lightweight T304 stainless steel or titanium construction
• TIG-welded precision CNC flanges for durability under high load
• Bolt-on fitment compatible with factory and aftermarket cat-back systems

• 1 x Set of Catless Downpipes (left and right)
• Mounting hardware and gaskets
• Optional O2 sensor extensions or defoulers

• BMW M5 G90 (2024+)
• BMW M5 G99 Touring (2024+)
• BMW G9X-Series with S68 4.4L Twin-Turbo V8 (2024+)

• Bolt-on fitment with OEM-style flanges; no welding or cutting required.
• Compatible with both factory and aftermarket cat-back exhaust systems.
• Requires ECU tune to prevent Check Engine Light (CEL); contact Project Styling for tuning recommendations.
• Professional fitting is recommended to ensure correct installation and alignment of flanges.

Will this downpipe work with my current exhaust system?
Yes, the catless downpipe features OEM-style flanges and is compatible with factory or aftermarket cat-back systems. Ensure your cat-back connects properly to the downpipe outlet.

Is an ECU tune required?
Yes. Without a tune, your vehicle will trigger a Check Engine Light due to the missing catalytic converter. An ECU tune is essential to prevent this and optimise performance. Contact Project Styling for tuning advice.

Can I use this on the road?
This downpipe is designed for track and off-road use only and is not street-legal in many regions due to emissions regulations. Use is at your own discretion and legal responsibility.

What material option should I choose?
T304 stainless steel offers excellent durability and corrosion resistance for a competitive price. Titanium is a premium upgrade providing superior heat resistance and weight savings for extreme performance applications.