2017+ Audi S4/S5 Valved Sport Exhaust System | B9/B9.5 S4/S5

Description

Push your Audi S4 or S5 to its true potential with the GCA Performance Audi S4 S5 B9 valved exhaust system — a precision-engineered stainless steel and titanium cat-back exhaust built specifically for the B9/B9.5 S4 and S5 platform. The electronic valve gives you full control over your exhaust note — refined and quiet for the morning commute, thunderously aggressive when you want to hear the 3.0T work.

Key Features

• Electronic valve system — open and close the exhaust valve on demand for total sound control
• Stainless steel & titanium build — premium materials for maximum durability and weight reduction
• Engineered for the 3.0T TFSI — pipe sizing and flow optimized for the S4/S5’s supercharged V6 engine
• Horsepower & torque gains — reduced exhaust backpressure unlocks power trapped by the factory system
• Aggressive sound profile — deep V6 rumble with crackle on overrun when valve is open
• Custom requests welcome — email us for tip finish, valve config, or sound level variations

Vehicle Compatibility

• Audi S4 B9 (2017–2022, 3.0T TFSI)
• Audi S5 B9 Coupe / Sportback / Cabriolet (2017–2022, 3.0T TFSI)
• Audi S4 B9.5 / S5 B9.5 (2022+) — contact us to confirm

Please email your engine code and build date before ordering to ensure correct pipe diameter and mounting configuration.

Why GCA Performance?

German Car Accessories designs these systems specifically for Audi platforms — not generic fitments adapted from other cars. The result is a system that fits perfectly, sounds right, and performs as promised. All Audi Spare Parts is your exclusive USA source for GCA exhaust systems, with fast nationwide shipping.