Audi B9 S4 & S5 Spool Race Downpipes

Spool race downpipes for the Audi B9 and B9.5 S4 and S5 replace the restrictive factory downpipes on the EA839 3.0T V6 for better flow and quicker spool.

Why you need it

The factory downpipes choke exhaust flow out of the turbo. This direct bolt-on swap cuts backpressure for quicker spool and sharper throttle response, adds horsepower and torque with proper tuning and gives the V6 a deeper, more aggressive note. It is built to handle high-boost setups with an OEM-like fit.

Fits

• Audi S4 B9 3.0T (2017–2019) and B9.5 (2020–2024)
• Audi S5 B9 3.0T (2018–2019) and B9.5 (2020–2024)
• 3.0L turbocharged V6 (EA839)

Features

• Direct bolt-on replacement for the factory downpipes
• T304 stainless steel with precision TIG welds
• Smooth mandrel bends for reduced backpressure
• Faster turbo spool and sharper throttle response
• More horsepower and torque with a proper tune
• More aggressive exhaust note

Good to know

Proper tuning is needed to see the power gains. Intended for off-road and competition use only. Not legal for use on public roads in many areas. Professional installation is recommended.