T304 Stainless Valved Catback Exhaust System for Audi Q8 RSQ8 4.0T

Upgrade sound, performance, and driving engagement on your Audi RS Q8 4.0T with the STRATEC Valved Cat-Back Exhaust System. Designed as a direct bolt-on replacement for the factory exhaust, this system delivers aggressive performance sound on demand while maintaining refined cruising comfort when valves are closed.

Constructed from premium T304 stainless steel, this exhaust offers excellent heat resistance, corrosion protection, and long-term durability. Featuring OEM-style electronic valves, you can switch instantly between a deep, sporty exhaust tone and quiet factory-like operation.

The free-flow 3-inch tubing improves exhaust efficiency and throttle response, while retaining the OEM exhaust tips for a clean, factory-fit appearance.

Key Features

• Fits Audi RS Q8 4.0T (2020–2025)

• T304 stainless steel construction for strength and corrosion resistance

• Valved cat-back exhaust system with OEM-style electronic valve control

• 3-inch tubing from front to rear for improved exhaust flow

• Aggressive exhaust tone with valves open

• Quiet, refined sound with valves closed

• 11.5 lb lighter than factory exhaust

• Precision TIG-welded for durability and premium finish

• Retains OEM exhaust tips for factory appearance

• Direct bolt-on installation using factory mounting points

• 100% reversible — return to stock at any time

Construction & Quality

• Material: T304 stainless steel

• Valves: OEM-style electronic valves

• Weight Savings: Approx. 11.5 lbs vs OEM

• Finish: Brushed stainless steel

What’s Included

• T304 stainless steel valved cat-back exhaust system

• OEM-style electronic valves

• All required clamps and installation hardware

Installation Notes

• Direct bolt-on fit

• Professional installation recommended