Audi 8Y S3 Stainless Steel Catback Valved Exhaust

Upgrade your Audi S3 8Y with this premium Stainless Steel Valved Cat-Back Exhaust System, engineered to deliver the perfect balance between refined daily driving and aggressive, performance-focused sound. Designed for enthusiasts who want full control over their exhaust note, this system features an independent Varex valve system, controlled by remote, that allows you to switch between quiet and loud modes on demand — without sacrificing OEM comfort or drivability.

Constructed from high-quality 304 stainless steel, this exhaust system offers exceptional durability, heat resistance, and long-term reliability. Mandrel-bent piping ensures smooth, unrestricted flow, while precision TIG welds provide strength and a premium finish. The quad carbon-look tips give your S3 a bold, upscale appearance that complements its performance pedigree.

Whether you’re cruising quietly with the valves closed or opening up the system for a deeper, more aggressive tone, this exhaust transforms the driving experience of the S3 8Y.

Key Features

Independent Varex Valve System
Rather than reusing the restricted factory valves, this system operates its own dedicated valve assembly with complete travel in both directions. Sealed when closed for quiet running, and fully unobstructed when open for maximum flow and volume. Switch between quiet, refined driving and an aggressive performance tone — the best of both worlds.

Premium 304 Stainless Steel Construction
Corrosion-resistant, heat-toughened, and built to withstand high-performance conditions.

Mandrel-Bent Piping
Provides smooth, uninterrupted exhaust flow for improved performance, reduced backpressure, and enhanced throttle response.

TIG-Welded for Strength & Precision
Clean welds and robust construction ensure long-term reliability.

Quad Carbon-Style Tips
Adds an aggressive, premium look to the rear of your S3 8Y.

Direct Bolt-On Fitment
Fits factory mounting points with no cutting, welding, or modification required.

Performance Benefits

• Enhanced exhaust tone with valves open — deeper, louder, and more aggressive

• Quiet, comfortable OEM-like sound with valves closed

• Reduced backpressure for improved turbo response

• Sharper acceleration and better throttle feel

• Premium styling upgrade with quad-tip finish

Vehicle Fitment

• Audi S3 8Y (2021+)
  Suitable for Sedan, Sportback & Hatch variants

Please Note

Professional installation is recommended. Valve operation is handled entirely by the supplied remote. The system does not connect to the factory valve motors.

Why Choose Proven Performance Parts

We specialise in high-performance parts for European vehicles — particularly Volkswagen GTI & R models, Audi S/RS, and other VAG platforms. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.