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Audi C8 RS6 and RS7 high-flow 400 cell catted downpipes in T304 stainless steel with gaskets and mounting bolts. }
Valvetronic Designs high-flow 400 cell catted downpipes for Audi C8 RS6 and RS7, T304 stainless steel with TIG welds and hardware kit. }
Internal view of Valvetronic Designs 400 cell catted downpipes for Audi C8 RS6 and RS7, showing the high-flow metallic honeycomb substrate. }
Close-up of Valvetronic Designs Special Ops identification plate on Audi C8 RS6/RS7 catted downpipe, showing part number AUD.C8.RS6.FF.400C.BR and precision TIG welding.
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Close-up of Valvetronic Designs Audi C8 RS6/RS7 catted downpipe showing the 400-cell metallic honeycomb substrate and precision-machined V-band flange. }
Close-up of Valvetronic Designs Audi C8 RS6/RS7 catted downpipe showing the precision-machined 3-bolt flange, T304 stainless steel construction, and welded O2 sensor bung. }
For any questions please PM or email: Online@AutoTalent.com Valvetronic Designs 400 Cell Catted Downpipes for Audi C8 RS6...
SKU: AUD.C8.RS6.FF.400C.BR
Product Type: Catted Downpipe
Regular price
$2,999.99
Regular price
$2,999.99
Sale price
$2,999.99
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Valvetronic Designs 400 Cell Catted Downpipes for Audi C8 RS6 / RS7 2021-2026
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For any questions please PM or email: Online@AutoTalent.com

Valvetronic Designs 400 Cell Catted Downpipes for Audi C8 RS6 / RS7 2021-2026

Unlock the full potential of your Audi C8 RS6 or RS7 with these EPA-compliant 400-cell high-flow catted downpipes. Designed specifically for the twin-turbocharged 4.0L V8, these downpipes help reduce exhaust backpressure, allowing for improved turbo efficiency, quicker spool, and enhanced overall performance—while maintaining emissions compliance.

Crafted from high-quality mandrel-bent stainless steel with precision TIG welds, these downpipes are built to withstand high temperatures and demanding driving conditions. The high-flow catalytic cores are engineered for durability and efficiency, making them ideal for both daily driving and performance applications. Designed as a direct bolt-on upgrade, they integrate seamlessly with factory mounting points and sensor locations for a straightforward installation.

Key Features:

  • EPA-Compliant 400-Cell Catalysts: High-flow cores improve exhaust flow while remaining emissions compliant.
  • Improved Turbo Performance: Reduced backpressure supports faster turbo spool and stronger power delivery.
  • Enhanced Exhaust Note: Produces a deeper, more aggressive tone—especially when paired with an upgraded exhaust system.
  • Premium Construction: Mandrel-bent stainless steel with precision TIG welding for long-lasting durability.
  • Direct OEM Fitment: Bolt-on design utilizing factory mounting points and O2 sensor locations.

Installation Notes:

  • Professional installation is recommended
  • Allow proper heat cycles for catalyst break-in
  • Follow OEM torque specifications during installation

Fitment:

  • Audi RS6 Avant 2021-2026

If you have any fitment questions, please feel free to reach out to our team via the contact methods below. If you are contacting us for any order status updates, please give us a call, or email us. We are a lean operation bringing you the best shopping experience possible. We are working on your orders as quickly as we can. We thank you for your patience.

Call:
Please reach out to us at (310) 231-0292 for sales inquiries if you are in the United States, Canada, Mexico.
Email:
For more in-depth product questions, fitment questions, product inquiries please email our performance specialists at online@autotalent.com.
All other inquiries:
Please direct your inquiries to the chat functionality on our website.

Returns Policy

If a product is ordered and not wanted, the UNUSED item can be returned for a 25% restocking fee unless otherwise specified. In some cases, we may offer the ability to return the item to us for a lesser restocking fee and then keep the balance as a store credit. To return an item, it must be in brand new condition with original packaging.

We cannot accept a return on special ordered or custom items.

Shipping is non refundable in either direction unless approved by AutoTalent. All items wanting to be return MUST be reported within 30 days of the original invoice date. No items will be returnable after 30 days. All products shipped from the AutoTalent facility are shipped via FedEx, USPS, or USPS. Some packages shipped from the manufacturer may or may not require signatures for package release.

Special Order Items

Some items may be special order specifically for the customer’s vehicle. These items generally require a deposit or paid in full. Once this deposit amount is notified to the customer and they agree to order the special order item, the deposit becomes non-refundable. These special order items cannot be returned or resold. Cancellations are not allowed on special order parts.

AutoTalent DOES NOT REFUND SHIPPING CHARGES. If you modify, install, or alter the item in any form, we cannot accept it as a return. We will not cover any expenses related to the product or installation, and you may be required to purchase a replacement.

** All cancellations that are requested that are NOT due to items not being in stock or delayed by the manufacturer are subject to a 5% processing fee. When you place an order with us we pay credit card fees that are NOT returned back to us. We will absorb these fees if we do not have the item in stock OR if you agree to the original ETA and that ETA is NOT met. If you decide to cancel for any other reason you will not receive this 5% fee back

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based.

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