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BMW F8X M3 / M4 400 Cell Catted Downpipes

Part Number (SKU): BMW.F8X.M2C.M3.M4.FF.400C.BR   |   Vendor: Valvetronic Designs


Sku: BMW.F8X.M2C.M3.M4.FF.400C.BR
Type: Motor Vehicle Exhaust
Barcode:
BMW F8X M3 / M4 400 Cell Catted Downpipes
BMW F8X M3 / M4 400 Cell Catted Downpipes

$4,366.60

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BMW F8X M3 / M4 – EPA-Compliant 400 Cell Catted Downpipes

Engineered for the S55 Twin-Turbo Inline-6 • High-Flow • Compliant •


Introducing Our NEW 400 Cell EPA-Compliant Downpipes for the F8X Platform

The BMW F8X M3 and M4 are icons of modern performance, powered by the high-revving S55 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 S55 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 S55-powered M3 or M4 — starting at the source.

📩 Questions or ordering assistance? customerservice@valvetronic.com

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