2017+ Audi S4/S5 Downpipe | B9/B9.5 S4/S5

Description

Push the performance of your 2017+ Audi S4 or S5 B9/B9.5 further with this GCA Performance stainless steel downpipe. Engineered specifically for the 3.0L TFSI V6 engine, this downpipe eliminates the factory catalytic restriction to deliver sharper turbo spool, quicker throttle response, and a meaningful power increase. A direct bolt-on upgrade purpose-built for track and off-road applications where maximum performance is the goal.

Key Features

• Stainless steel construction for durability and long-term corrosion resistance
• Designed for the 2017+ Audi S4/S5 B9/B9.5 (3.0L TFSI V6 engine)
• Catless design for unrestricted exhaust flow and maximum turbo performance gains
• Noticeably faster turbo spool and improved throttle response
• Precision TIG-welded for leak-free, reliable performance
• Direct bolt-on fitment — no cutting or fabrication required
• GCA Performance engineered — designed for the serious Audi enthusiast

Vehicle Compatibility

• 2017+ Audi S4 B9 / B9.5 (3.0L TFSI V6)
• 2017+ Audi S5 B9 / B9.5 (3.0L TFSI V6)

Installation

This downpipe is a direct bolt-on replacement for the factory unit. Professional installation is strongly recommended. An ECU tune after installation is highly advised to fully capitalise on the performance gains.

⚠️ Off-Road / Racing Use Disclaimer: This downpipe is designed for off-road and racing use only. It is not CARB or EPA certified and is not legal for use on public roads or highways. By purchasing, you confirm that this product will be used exclusively for off-road or closed-circuit racing purposes in compliance with all applicable local laws and regulations.

Why Buy From All Audi Spare Parts?

All Audi Spare Parts specialises in Audi performance exhaust components and upgrade parts. Every product is quality-checked for fitment and build standard before listing. We offer fast worldwide shipping and expert Audi support. Unlock your S4 or S5’s full potential today.