Description
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Give your Audi S4 or S5 the aggressive sound and enhanced performance it deserves with the GCA Performance Valved Sport Exhaust System. Designed specifically for 2017–2025 B9 and B9.5 Audi S4 and S5 models, this premium cat-back exhaust system delivers improved exhaust flow, reduced backpressure, and an exhilarating exhaust note while maintaining daily driving comfort.
Engineered by German Car Accessories under the GCA Performance lineup, this exhaust system is available in either high-quality T304 stainless steel or ultra-lightweight Grade 5 6AL-4V titanium construction. Both options provide exceptional durability, corrosion resistance, and long-lasting performance while helping your 3.0L Turbocharged V6 engine breathe more efficiently.
The integrated electronic valve system gives drivers complete control over the exhaust sound. Keep the valves closed for a refined, factory-like driving experience or open them instantly to unleash a deeper, louder, and more aggressive exhaust tone whenever desired.
Designed as a complete cat-back system, it includes both the mid-pipe and axle-back sections, along with premium quad exhaust tips that enhance the appearance of your Audi's rear profile. Precision TIG welding ensures excellent strength, durability, and fitment for a true bolt-on installation.
Features & Benefits
- Designed specifically for 2017–2025 Audi S4 and S5 models
- Fits both B9 and B9.5 platforms
- Improves exhaust flow and efficiency
- Reduces exhaust backpressure
- Enhances throttle response and driving enjoyment
- Supports increased horsepower and torque potential
- Electronic exhaust valves with included controller
- Adjustable exhaust sound at the touch of a button
- Available in T304 stainless steel or Grade 5 titanium
- Lightweight and corrosion-resistant construction
- Aggressive quad exhaust tip design
- Precision TIG-welded construction
- Direct bolt-on installation
- Fully reversible modification
- Engineered by GCA Performance
Specifications
- Vehicle Fitment: 2017–2025 Audi S4
- Vehicle Fitment: 2017–2025 Audi S5
- Chassis: B9 / B9.5
- Engine: 3.0L Turbocharged V6
- Material: T304 Stainless Steel or 6AL-4V Grade 5 Titanium
- Exhaust Type: Full Cat-Back Exhaust System
- Components Included: Mid-Pipe and Axle-Back Sections
- Exhaust Tips: Quad Exhaust Tips
- Valve System: Electronic Exhaust Valves with Controller
- Construction: Precision TIG Welded
- Installation: Direct Bolt-On
- Reversible: Yes
- Hardware Included: Yes
What's Included
- GCA Performance Cat-Back Exhaust System
- Mid-Pipe Section
- Axle-Back Section
- Quad Exhaust Tips
- Electronic Valve System
- Valve Controller
- Mounting Hardware
- Installation Components
Fitment Notes
- Fits all 2017–2025 Audi S4 B9 and B9.5 models
- Fits all 2017–2025 Audi S5 B9 and B9.5 models
- Compatible with stock and modified vehicles
- Direct replacement for the factory exhaust system
- No cutting or permanent modifications required
- Professional installation recommended
Warranty
Every GCA Performance product is backed by our 1-Year Limited Warranty, providing protection against manufacturing defects and workmanship issues for added confidence and peace of mind.
Why Upgrade Your Audi S4/S5 Exhaust System?
The factory exhaust system on the Audi S4 and S5 is designed to balance comfort and refinement, but it limits the true sound potential of the turbocharged 3.0L V6. The GCA Performance Valved Sport Exhaust System unlocks a deeper, more aggressive exhaust note while improving exhaust flow and reducing backpressure. With adjustable valve technology, premium construction, and eye-catching quad tips, this exhaust system delivers the perfect combination of performance, sound, and everyday drivability.
