Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes
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Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes

Save $1,320.00
Valvetronic Designs
Price:
$7,479.99 $8,799.99

Shipping & Returns

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Please refer to our Return Policy for all terms and exclusions.

Note

Prior to painting or installation, it is essential to conduct a thorough test fit of the item. Returns or warranty claims will be voided if the item has been tampered with or is no longer in a re-sellable or new condition. Please ensure careful consideration of this before proceeding.

Description

Audi RSQ8 / SQ8 / SQ7 – EPA-Compliant 400 Cell Catted Downpipes

Unlock the Full Potential of the 4.0T Twin-Turbo V8 • High-Flow • Compliant • 

Introducing Our NEW 400 Cell EPA-Compliant Downpipes for Audi 4.0T

The 4.0T twin-turbo V8 powering the Audi RSQ8, SQ8, and SQ7 delivers immense performance — but factory catalyst restrictions hold it back. Our NEW EPA-compliant 400 cell high-flow catted downpipes are engineered to increase exhaust flow, enhance turbo efficiency, and dramatically sharpen the vehicle’s sound profile — all while maintaining emissions compliance standards.

This is the foundation of true 4.0T performance.

Why Upgrade to 400 Cell?

  • EPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust velocity while maintaining compliance standards.
  • Faster Turbo Spool: Reduced backpressure improves throttle response and mid-range torque delivery.
  • Sharper Exhaust Note: Enhanced turbo acoustics with deeper low-end presence and more aggressive top-end tone.
  • Optimized Performance Balance: Noticeable gains without compromising daily drivability.

Performance & Engineering

  • Optimized Flow Architecture: Designed to reduce restriction while preserving catalyst efficiency.
  • Mandrel-Bent Tubing: Smooth internal transitions for maximum airflow.
  • Precision TIG Welding: Built to withstand extreme exhaust temperatures and boost pressures.
  • Direct OEM Bolt-On Design: Utilizes factory mounting locations for straightforward installation.
  • Engineered to Pair Seamlessly with Valvetronic Titanium Exhaust Systems

Sound Transformation

  • Stock Exhaust + Downpipes: Noticeably louder with stronger turbo character and deeper exhaust tone.
  • Valvetronic Exhaust + Downpipes: Maximum transformation — sharper transitions, increased aggression, and a true RS-inspired exhaust 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

Unleash the true sound and performance of your Audi 4.0T — starting at the source.

📩 Questions or ordering assistance? customerservice@valvetronic.com

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