Audi RSQ8 Valved Cat-Back Exhaust System

T304 Stainless Steel with OEM-Style Electronic Valve Control

Overview

The Audi RSQ8 blends supercar performance with SUV practicality—but like many modern performance vehicles, its factory exhaust keeps things a little too restrained. The Valvetronic Designs Valved Cat-Back Exhaust System unleashes the full potential of the 4.0L twin-turbo V8, giving it the voice it deserves.

This 3-inch system runs from the downpipes to the OEM exhaust tips, offering two distinct personalities: valves closed for refined, factory-like cruising, or valves open for an unfiltered, aggressive soundtrack. For those who want even more performance and volume, our optional free-flow downpipes take things to the next level.

Controlled via electronic standalone valves, the system offers long-term reliability, seamless integration, and unmatched flexibility.

Why It Works

• 3-Inch Diameter Tubing: Maximizes flow for improved throttle response and power.

• Dual Sound Modes: Quiet refinement with valves closed, motorsport aggression with valves open.

Sound & Control

• Valves Closed: Stock-like sound levels for comfortable daily driving and highway cruising.

• Valves Open: Silencer fully bypassed for maximum volume and character.

• Optional Free-Flow Downpipes: Unlock even more performance and an enhanced exhaust tone.

Construction & Quality

• Material: Signature T304 stainless steel for strength and corrosion resistance.

• Weight Savings: 11.5 lb lighter than the factory exhaust.

• Craftsmanship: Precision TIG welds for durability and premium finish.

• Tips: Designed to retain OEM exhaust tips for a factory-fit appearance.

Fitment

• 2019–2025 Audi RSQ8

Installation Notes

• Direct bolt-on fit to OEM mounting points.
  

What’s Included

• T304 stainless steel valved cat-back exhaust system

• Standalone electronic valve controller

• All necessary clamps and hardware

Specifications

• Material: T304 stainless steel

• Weight Savings: 11.5 lb vs. OEM

• Tubing Diameter: 3 inches from front to rear

• Finish: Brushed stainless steel

Valvetronic Designs shipping & returns

• Returns: new, unused and uninstalled parts within 30 days of purchase, in the original packaging, with a return authorization (RMA) number issued first.
• Restocking fee: 25% on all non-warranty returns; the customer pays return shipping unless the part qualifies for warranty.
• Sound: exhaust sound and tone are personal taste and are not grounds for a return or warranty claim.
• Warranty: lifetime on stainless and titanium tubes and welds, 3 years on mufflers and resonators, 1 year on valves, remotes, electronics and tips. If a problem shows up after install, contact us before removing the part.

To start a return or ask a question, contact us with your order number.