$900.00
Unlock the true performance of your twin-turbo V6 with the Untd. Performance Catless Downpipe w/ Heat Shield for the Audi B9 RS4 and RS5. Engineered for maximum flow and thermal efficiency, this premium upgrade replaces the restrictive factory catalytic converters with a high-velocity, shielded system that delivers raw power, quicker spool, and an aggressive exhaust note—all while managing heat under extreme driving conditions.
Available on backorder
Unlock the true performance of your twin-turbo V6 with the Untd. Performance Catless Downpipe w/ Heat Shield for the Audi B9 RS4 and RS5. Engineered for maximum flow and thermal efficiency, this premium upgrade replaces the restrictive factory catalytic converters with a high-velocity, shielded system that delivers raw power, quicker spool, and an aggressive exhaust note—all while managing heat under extreme driving conditions.
Designed to remove the biggest bottleneck in your RS’s exhaust system, this downpipe eliminates the factory catalytic converters to drastically reduce backpressure. Expect faster turbo spool, crisper throttle response, and serious gains in horsepower and torque—especially when paired with a proper ECU tune.
Built-in thermal shielding helps contain and deflect radiant heat away from nearby components, protecting vital engine bay systems while maintaining performance consistency. Whether you’re ripping through a track day or sitting in traffic, heat is managed and kept in check.
Let your 2.9T V6TT engine sing. The catless setup unleashes a deep, bold exhaust note with intensified turbo spool and sharp crackles under load. This is the sound of unrestricted power—loud, aggressive, and undeniably RS.
Constructed from high-quality 304 stainless steel with TIG welds and CNC-machined flanges, this downpipe is made to handle the extreme heat and pressure of high-performance driving. Durable, leak-free, and track-tested.
Designed specifically for the EA839 2.9T platform, this downpipe bolts directly to the factory turbo and mates up with OEM or aftermarket exhaust systems—no cutting, welding, or modification required.
This catless, emissions-delete setup is built for serious enthusiasts and motorsport applications. It’s ideal for tuned builds chasing maximum output, sound, and reliability where emissions compliance is not a concern.
Audi RS4 (B9) 2.9T V6 Twin-Turbo (EA839)
Audi RS5 (B9) 2.9T V6 Twin-Turbo (EA839)
(Fits 2018+ RS models with EA839 engine)
From daily driving to full-blown track builds, the Untd. Performance Catless Downpipe w/ Heat Shield gives your B9 RS4 or RS5 the sound, power, and presence it deserves. No restrictions. No compromises. Just pure, unfiltered performance.
⚠️ Note: For off-road and track use only. Not emissions-compliant in all regions. Please check local laws before installation.
