$800.00
Unleash the full fury of your twin-turbo 2.9L V6 with the Untd. Performance Catless Downpipe for the Audi B9 RS5. Built to eliminate the most restrictive part of your exhaust system, this high-flow downpipe unlocks sharper throttle response, quicker turbo spool, and an aggressive exhaust tone that transforms your RS5 into the track-ready monster it was meant to be. If you’re chasing serious performance and raw sound, this is your first step.
Available on backorder
Unleash the full fury of your twin-turbo 2.9L V6 with the Untd. Performance Catless Downpipe for the Audi B9 RS5. Built to eliminate the most restrictive part of your exhaust system, this high-flow downpipe unlocks sharper throttle response, quicker turbo spool, and an aggressive exhaust tone that transforms your RS5 into the track-ready monster it was meant to be. If you’re chasing serious performance and raw sound, this is your first step.
By removing the factory catalytic converters, this downpipe eliminates backpressure and significantly improves exhaust flow. The result? Faster spool, better throttle response, and increased horsepower and torque throughout the rev range—especially when paired with tuning.
This isn’t just about power—it’s about presence. The catless design uncorks the true sound of the 2.9T V6, delivering a deeper tone, pronounced turbo spool, and raw, motorsport-inspired crackles under deceleration. It’s the kind of soundtrack that makes every drive feel like a lap.
Designed specifically for the B9 RS5 platform, this downpipe fits like factory while delivering track-level performance. CNC-machined flanges and mandrel-bent stainless steel tubing ensure a perfect fit with OEM or aftermarket exhaust systems.
Crafted from premium 304 stainless steel and TIG-welded for strength, this downpipe is built for high-boost, high-temp punishment. Whether you’re daily driving or tracking your RS5, it’s made to perform and last.
This catless downpipe is intended for off-road and motorsport use where emissions compliance is not required. It’s the ideal upgrade for tuned RS5 builds chasing maximum output and sound.
Audi RS5 (B9) 2.9T V6 Twin-Turbo (2018+)
(Also compatible with RS4 Avant in applicable markets using the same 2.9T powertrain)
The Untd. Performance Catless Downpipe is the ultimate bolt-on for RS5 drivers who want more power, more sound, and less compromise. From track days to canyon runs, it delivers everything your 2.9T needs to perform at its peak.
⚠️ Note: For off-road and track use only. Not emissions-compliant in all regions. Please check your local laws before installation.
