Description
The BMW G8X M2, M3 and M4 are icons of modern performance, powered by the high-revving S58 twin-turbo inline-6. While the factory catalysts prioritize restriction and sound suppression, our NEW EPA-compliant 400 cell high-flow catted downpipes are engineered to unlock improved exhaust flow, sharper throttle response, and a more aggressive turbo character – all while maintaining emissions compliance standards.
This is where the S58 truly comes alive.
Why Upgrade to 400 Cell?
- EPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust efficiency while maintaining compliance standards
- Faster Turbo Spool: Reduced backpressure enhances responsiveness and mid-range torque delivery
- Sharper Exhaust Tone: Cleaner, more pronounced turbo acoustics with a deeper overall note
- Street & Track Balanced: Noticeable performance gains without sacrificing daily drivability
Performance & Engineering
- Optimized Flow Design: Minimizes restriction while preserving catalyst efficiency
- Mandrel-Bent Tubing: Ensures smooth internal transitions and consistent exhaust velocity
- Precision TIG Welding: Built to endure high exhaust temperatures and sustained boost pressure
- Direct OEM Bolt-On Installation: Utilizes factory mounting points for straightforward installation
- Engineered to Pair Seamlessly with Valvetronic Exhaust Systems
Sound Transformation
- Stock Exhaust + Downpipes: Noticeable increase in volume with stronger turbo presence and improved clarity
- Valvetronic Exhaust + Downpipes: Maximum transformation — sharper crackles, enhanced turbo whistle, and a more aggressive high-RPM character.
Construction & Durability
- Premium high-grade stainless steel construction
- High-temperature resistant 400 cell catalyst cores
- OEM-style sensor placement for proper operation
- Engineered for long-term reliability under high boost
Unlock the true potential of your S58-powered M2, M3 or M4 – starting at the source.
Vehicles Supported
BMW G87 M2 Competition
BMW G8X M3/M4, including Competition
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