Active Autowerke S58 GESI Catted Downpipes – BMW G80 M3 / G82 M4 / G87 M2

Unlock the true performance and sound of your S58-powered BMW with the Active Autowerke Signature Catted Downpipes featuring GESI G-Sport Ultra High Output catalytic converters. Designed for the G80 M3, G82 M4, and G87 M2, these downpipes significantly reduce exhaust restriction, improve turbo response, and deliver a deeper, more aggressive exhaust tone - bringing back the character expected from a true BMW M car.

Engineered as part of Active Autowerke’s complete exhaust solution, these downpipes are the foundation for improved flow and performance. By replacing the restrictive factory units, they allow exhaust gases to evacuate more efficiently, resulting in faster turbo spool and increased power potential.

Key Features

• Active Autowerke S58 catted downpipes with GESI G-Sport catalytic converters
  
• No CEL (Check Engine Light) for catalytic efficiency
  
• 4.5” high-flow catalytic converter design for maximum performance
  
• 3” stainless steel piping transitioning to OEM 70mm connection
  
• Faster turbo spool and improved throttle response
  
• Full 304 stainless steel construction including catalytic substrate
  
• Cast stainless steel V-band connections for precise fitment
  
• Integrated stainless flex joints for durability
  
• Ultra high-flow 400 CPSI catalytic converters
  
• Direct bolt-on installation with no cutting or welding required
  
• Made in the USA (Miami, Florida)

Performance & Sound

The OEM S58 downpipes restrict exhaust flow, limiting both performance and sound. The Active Autowerke GESI catted downpipes address these limitations by improving exhaust evacuation.

• Quicker turbo spool and increased boost efficiency
  
• Improved horsepower and torque potential
  
• More aggressive, deeper exhaust tone
  
• Enhanced driving experience under load and acceleration

GESI G-Sport Catalytic Technology

These downpipes utilise industry-leading GESI UHO catalytic converters, designed for high-performance applications without sacrificing emissions efficiency.

• EPA registered and OBD2 compliant (excluding California)
  
• Rated for 500–850 horsepower per catalytic converter
  
• Proprietary precious metal loading reduces emissions and CEL risk
  
• Capable of reaching operating efficiency within seconds of startup
  
• Withstands extreme temperatures up to 1500°F

These high-flow cats outperform OEM units while maintaining reliability and reducing common catalytic-related issues.

Installation

Direct bolt-on design ensures straightforward installation using factory mounting points.

Professional installation is highly recommended

Installation is available at Sequential Racing – Altona North, Melbourne
To organise installation, contact: sales@sequentialracing.com.au

Vehicle Fitment

S58 Twin Turbo

• BMW G80 M3
  
• BMW G82 M4
  
• BMW G87 M2

What’s Included

• Active Autowerke S58 GESI Catted Downpipes (Pair)

Important Notes

• Not legal for use on vehicles registered in California
  
• Federal regulations apply regarding emissions modifications
  
• Warranty void if excessive burble tuning is used, as this may damage the catalytic core

Warranty

• 5 Year / 50,000 Mile Warranty (shell and pipe structure)
  
• 2 Year / 25,000 Mile Warranty (catalytic core, original purchaser only)

Why Choose Sequential Racing?

Sequential Racing supplies premium performance upgrades for BMW M platforms, offering trusted brands and proven solutions. The Active Autowerke GESI Catted Downpipes provide a perfect balance of power, sound, and reliability for serious enthusiasts.

• No CEL solution with proven GESI catalytic technology
  
• Improved performance without compromising drivability
  
• High-quality construction with long-term durability

Upgrade your BMW G80 M3, G82 M4, or G87 M2 with the Active Autowerke S58 GESI Catted Downpipes and experience sharper performance, faster spool, and a true M-car exhaust note.