Valvetronic Designs Valvetronic 400 Cell Catted Downpipes - BMW G87 M2, G80 M3, G82/83 M4 S58 3.0L G8XFF400CBR

Valvetronic 400 Cell Catted Downpipes - BMW G87 M2, G80 M3, G82/83 M4 S58 3.0L

The BMW G8X M2, M3, and M4 represent the next evolution of M performance, powered by the highly capable S58 twin-turbo inline-6. While factory catalysts prioritize restriction and sound suppression, our NEW EPA-compliant 400-cell high-flow catted downpipes are engineered to reduce exhaust backpressure, enhance turbo efficiency, and unlock a sharper, more aggressive exhaust character — all while maintaining emissions compliance standards.
Valvetronic Designs Valvetronic Designs
T#: 52516242 | Part#: G8XFF400CBR
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Valvetronic Designs Valvetronic 400 Cell Catted Downpipes - BMW G87 M2, G80 M3, G82/83 M4 S58 3.0L G8XFF400CBR
Valvetronic 400 Cell Catted Downpipes - BMW G87 M2, G80 M3, G82/83 M4 S58 3.0L
$2249.99

The BMW G8X M2, M3, and M4 represent the next evolution of M performance, powered by the highly capable S58 twin-turbo inline-6. While factory catalysts prioritize restriction and sound suppression, our NEW EPA-compliant 400-cell high-flow catted downpipes are engineered to reduce exhaust backpressure, enhance turbo efficiency, and unlock a sharper, more aggressive exhaust character — all while maintaining emissions compliance standards.

This upgrade maximizes the performance potential of the S58 platform without compromising drivability.

Why Upgrade to 400 Cell?

  • EPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust flow while maintaining compliance standards.
  • Improved Turbo Response: Reduced restriction enhances spool speed and mid-range power delivery.
  • Enhanced Exhaust Character: Deeper tone with more defined turbo acoustics and sharper high-RPM presence.
  • Street & Track Ready: Noticeable gains while maintaining everyday usability.

Performance & Engineering

  • Optimized Flow Architecture: Minimizes backpressure while preserving catalyst efficiency.
  • Mandrel-Bent Tubing: Smooth internal transitions for consistent exhaust velocity.
  • Precision TIG Welding: Built to withstand extreme exhaust temperatures and high boost levels.
  • Direct OEM Bolt-On Installation: Utilizes factory mounting locations for straightforward installation.
  • Engineered to Pair Seamlessly with Valvetronic Exhaust Systems

Sound Transformation

  • Stock Exhaust + Downpipes: Noticeable increase in depth and turbo presence with improved exhaust clarity.
  • Valvetronic Exhaust + Downpipes: Maximum transformation — stronger crackles, enhanced turbo spool acoustics, and a more aggressive overall signature.

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 and tuning conditions

Prop 65 WarningProp 65 Warning

Cross Reference
  • BMW.G8X.M2.M3.M4.FF.400C.BR

Product Q&A

Lifetime Replacement

This product is not eligible for Lifetime Replacement
MAKE MODEL SUBMODEL ENGINE Special Fitment Notes
BMW G80 M3 S58 3.0L Use vehicle selector to confirm fitment
BMW G80 M3 Competition S58 3.0L Use vehicle selector to confirm fitment
BMW G80 M3 Competition xDrive S58 3.0L Use vehicle selector to confirm fitment
BMW G82 M4 S58 3.0L Use vehicle selector to confirm fitment
BMW G82 M4 Competition S58 3.0L Use vehicle selector to confirm fitment
BMW G82 M4 Competition xDrive S58 3.0L Use vehicle selector to confirm fitment
BMW G83 M4 Competition xDrive S58 3.0L Use vehicle selector to confirm fitment
BMW G87 M2 S58 3.0L Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.