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Crank up the intensity and let your twin-turbo V8 breathe free with the Untd. Performance Catless Downpipe for the Audi C8 RS6 and RS7. Designed for unrestricted power and unfiltered sound, this downpipe removes factory catalytic converters to deliver maximum flow, faster turbo response, and a raw exhaust note that transforms your RS into a true performance weapon.
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Take your EA839-powered Audi B9 S4 or S5 to the next level with the Untd. Performance Catless Downpipe w/ Heat Shield. Designed for maximum power and thermal management, this upgrade removes the restrictive factory catalytic converter and adds integrated heat shielding for cooler engine bay temps and reliable long-term performance. Whether you’re building a weekend weapon or prepping for the track, this downpipe is the foundation of your power setup.
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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.
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Unleash the full fury of your twin-turbo 4.0T V8 with the Untd. Performance Catless Downpipe w/ Heat Shield for the Audi C8 RS6 and RS7. Designed to eliminate restriction and optimize exhaust flow, this downpipe not only wakes up your powerband but brings out the raw, aggressive character your RS was built for. Integrated thermal shielding ensures performance stays consistent, even under extreme heat and heavy load.
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Unleash the full potential of your Audi B9 RS4 or RS5 with the Untd. Performance Catted Downpipe w/Shield. Designed for the 2.9T V6 engine, this downpipe replaces the restrictive factory components to enhance exhaust flow, increase turbo efficiency, and deliver a more aggressive exhaust note—all while maintaining emissions compliance. With integrated heat shielding for optimal durability, this downpipe is the ideal upgrade for enthusiasts seeking peak performance and a refined sound from their Audi.
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Unleash the full potential of your VQ37-powered Nissan or Infiniti with the Untd. Performance Resonated Testpipe. Designed to replace the restrictive factory catalytic converters, this performance-focused upgrade delivers significant gains in exhaust flow, sound, and throttle response—while incorporating a resonator to smooth out tone and reduce unwanted rasp. Perfect for street-driven builds or track machines, this testpipe strikes a bold balance between raw performance and refined sound.
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