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Audi C8 RS6 and RS7 high-flow 400 cell catted downpipes in T304 stainless steel with gaskets and mounting bolts.

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Valvetronic Designs high-flow 400 cell catted downpipes for Audi C8 RS6 and RS7, T304 stainless steel with TIG welds and hardware kit.

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Internal view of Valvetronic Designs 400 cell catted downpipes for Audi C8 RS6 and RS7, showing the high-flow metallic honeycomb substrate.

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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.

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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.

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

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Brand: Valvetronic DesignsSKU / Part #: AUD.C8.RS6.FF.400C.BR

Regular price: $2,498.99
Regular price: ~~$2,999.99~~
Sale price: $2,498.99
Unit price: per

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Subtotal: $2,498.99

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

Subtotal: $2,498.99

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Overview

This Valvetronic Designs catted downpipes is engineered specifically for the 2021-2026 Audi RS 6 Avant (C8) and Audi RS 7 (C8). It mounts to the factory hardware locations and can be returned to stock.

Highlights

EPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust efficiency while maintaining compliance standards.
Improved Turbo Spool & Mid-Range Response: Reduced restriction sharpens throttle input and power delivery.
Enhanced Exhaust Character: Deeper tone with stronger turbo acoustics and more pronounced high-RPM presence.
Street & Performance Balanced: Noticeable gains without compromising daily refinement.
Optimized Flow Architecture: Minimizes backpressure while preserving catalyst efficiency.
Mandrel-Bent Tubing: Smooth internal transitions for maximum exhaust velocity.
Precision TIG Welding: Built to endure sustained high exhaust temperatures and boost levels.
Direct OEM Bolt-On Installation: Utilizes factory mounting locations for straightforward installation.

Fitment

Years	Make	Model	Chassis / Engine
2021-2026	Audi	RS 6 Avant	C8
2021-2026	Audi	RS 7	C8

Installation

Bolt-on design that uses the factory mounting points. Professional installation is recommended.

Fitment

Year	Make	Model
2021–2026	Audi	RS6 Avant
2021–2026	Audi	RS7

Not sure? Text us your VIN and we’ll confirm.

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

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