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SKU
Product
Rating
Price
  • Untd. Performance Catless Downpipe W/ Shield 3.0T - Audi B9 S4/S5 2019+
    SKU: UNTD-320

    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.

  • Untd. Performance Catless Downpipe W/Shield 2.9T - Audi B9 RS4/RS5
    SKU: UNTD-323

    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.

  • Untd. Performance Catless Downpipe W/Shield 4.0T - Audi C8 RS6/RS7
    SKU: UNTD-326

    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.

  • Untd. Performance Catted Downpipe W/Shield 2.9T - Audi B9 RS4/RS5
    SKU: UNTD-323.5

    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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