$800.00
If you’re serious about power, sound, and turbo response, the Untd. Performance 3.5″ Catless Downpipe is the ultimate exhaust upgrade for your Audi RS3 or TTRS 8V. Designed for the EA855 2.5T (DAZA/DNWA) engine, this monster 3.5” catless downpipe is built to remove restriction, reduce backpressure, and give your 5-cylinder the voice — and performance — it truly deserves. Whether you’re pushing Stage 2 or going all-out with a big-turbo setup, this is the foundation of a proper high-boost build.
Available on backorder
If you’re serious about power, sound, and turbo response, the Untd. Performance 3.5″ Catless Downpipe is the ultimate exhaust upgrade for your Audi RS3 or TTRS 8V. Designed for the EA855 2.5T (DAZA/DNWA) engine, this monster 3.5” catless downpipe is built to remove restriction, reduce backpressure, and give your 5-cylinder the voice — and performance — it truly deserves. Whether you’re pushing Stage 2 or going all-out with a big-turbo setup, this is the foundation of a proper high-boost build.
Massive 3.5” Catless Design:
No compromises. With a full 3.5” diameter, this downpipe outflows the stock unit by a mile. The straight-through, catless design eliminates backpressure, improves turbo efficiency, and delivers serious gains in horsepower and torque.
Explosive Turbo Response:
Free up your turbo and feel the difference. Boost hits faster and harder, throttle response sharpens up, and the car just pulls — and keeps pulling. Perfect for high-powered builds that need to breathe at the top end.
Insane 5-Cylinder Sound:
Raw. Angry. Addictive. This downpipe brings out the true voice of the 2.5T — turbo whistle, crackles, and an unmistakable war cry that only Audi’s inline-5 can deliver. It’s loud. It’s proud. And it absolutely turns heads.
Motorsport-Grade Construction:
Crafted from high-grade stainless steel and expertly TIG welded, this downpipe is made to handle brutal exhaust temps and aggressive driving. Track days, drag passes, canyon runs — bring it on.
Direct Bolt-On Fitment:
Engineered for an easy installation with OEM or most aftermarket exhaust systems. No cutting or welding required — just bolt it in and send it.
Tune Required:
Due to the catless design, a Stage 2 ECU tune is required to prevent CELs and ensure proper fuel and boost calibration.
The stock downpipe is the biggest choke point in your RS3 or TTRS’s exhaust system. Replacing it with a high-flow 3.5” catless unit transforms the car’s performance, sound, and character — especially under aggressive driving or tuning.
Compatibility:
Audi RS3 8V / 8V.5 (Sedan & Sportback)
Audi TTRS 8S (DAZA/DNWA – 2.5T EA855)
Unleash the full potential of your 5-cylinder animal with the Untd. Performance 3.5″ Catless Downpipe — the ultimate flow upgrade for serious power builds.
