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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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ALL DISCOUNTS APPLIED IN CART!

Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes

Price
$3,999.99

📞 Price too high or questions before ordering? Call/text us at 475-227-5381

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

Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes

Audi RSQ8/SQ8/SQ7 400 Cell Catted Downpipes

$3,999.99

Questions?

WE HAVE ANSWERS

How long til' I get my order?

Small items arrive to you in under 1 week

Larger products like full suspension kits must ship freight and can take 1-3 Weeks

Are Installation Instructions Included?

Instructions are included for most parts that require any sort of knowledge to install.

Here's what to do if your parts come WITHOUT instructions:

1. Some parts are genuinely common sense on how they get installed

2. If you can't figure it out on your own, YOUTUBE IS YOUR FRIEND! Our founder started this company from learning how to build headlights off a YouTube Video

3. If there are no videos on YouTube, or instructions anywhere on Google then please CALL OR EMAIL US and we will guide you through or get you instructions from the manufacturer

4. Doing installs on your own is always fun, but sometimes, it isn't. Always consider having your parts professionally installed

ALWAYS CONSIDER US. We sold you the parts, let us install them at THE LAB in Connecticut. We offer enclosed and open cross country transportation.

Of course you won't want to spend thousands on transportation to install lug nuts or emblems but if you are spending a LOT of money on parts, you may just want to send the car our way

What is your return policy if the part doesn’t fit or isn’t what I expected?

If the part was NOT installed, we accept returns within 14 days of delivery.

If the part WAS installed (or attempted installation), we cannot accept a return.

Do your parts come with a warranty?

All parts come with Manufacturer Warranty! Each manufacturer has different warranties so we suggest reading up on their warranty policy before ordering.

I found a better price somewhere else, can you beat it?

YES! If you come across a competitor with a lower advertised price than us, we will BEAT it by at LEAST 1%. Please contact us with proof of the lower priced product.

Do you give out discounts or sponsorships?

NO! We do not give out discounts or do sponsorships. You can get 5% OFF your first order by signing up for text & email notifications. OR just wait until our BLACK FRIDAY Sale that happens once a year.

See It IRL

REAL CUSTOMERS, REAL BUILDS

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