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Unlock raw, unfiltered performance from your Audi S6, RS6, S7, or RS7 (C7 platform) with the Untd. Performance 2.75″ Catless Downpipe. Purpose-built for the twin-turbo 4.0T V8, this downpipe removes the restrictive factory catalytic converters to maximize exhaust flow, unleash horsepower, and transform your driving experience. Whether you’re carving corners or chasing numbers on the dyno, this downpipe delivers the performance, sound, and response you’ve been looking for.
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Unlock the true potential of your Audi S6/RS6 and S7/RS7 C7 with the Untd. Performance 200 Cell 3″ Downpipe + Mid-Pipe. Specifically engineered for the 4.0T twin-turbo V8, this high-performance downpipe and mid-pipe combination provides significant power gains, faster turbo spool, and an aggressive exhaust sound, all while maintaining a level of emissions compliance with the 200-cell high-flow catalytic converters. This premium upgrade improves exhaust flow and reduces backpressure, allowing your V8 engine to breathe more freely, delivering exceptional throttle response and a thrilling driving experience.
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For RS owners who want real power without going fully catless, the Untd. Performance 200 Cell Downpipe is the perfect balance of flow, sound, and street-friendly performance. Designed for the twin-turbo 4.0T V8 in the Audi C8 RS6 and RS7, this high-performance downpipe replaces the restrictive factory setup with a premium 200 cell sport catalytic converter—unlocking sharper throttle response, stronger midrange torque, and a deeper, more aggressive tone.
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- Complete system included downpipes, connector pipes and stainless clamps
- 200 Cell High-Flow Cat
- With Heat Shield
- 100% mandrel bent and TIG welded
- Constructed of low carbon 304 Stainless Steel
- Fits within OEM heat shields
- Bolt-on installation
- Improved exhaust note
- Improved exhaust flow
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Elevate the power and presence of your S-Class AMG with the Untd. Performance 200 Cell Downpipe w/ Heat Shield. Engineered for the M177 4.0L twin-turbo V8 in the W222 S63, this downpipe is designed to drastically improve flow, reduce turbo lag, and enhance exhaust tone—while keeping things refined with a high-flow catalytic converter and integrated thermal shielding.
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Upgrade your BMW M850i, X5 X5M G05, or M550i G30 with the Untd. Performance Catless Downpipe (Primary + Secondary) V2, designed for the N63R 4.4L twin-turbo V8. This advanced V2 catless system removes both primary and secondary factory catalytic converters, maximizing exhaust flow for faster turbo spool, improved throttle response, and significant horsepower and torque gains.
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Strike the perfect balance between performance and drivability with the Untd. Performance 200 Cell High-Flow Catted Downpipe w/ Heat Shield for the Audi C8 RS6 and RS7. Designed for enthusiasts who want serious gains without going fully catless, this downpipe replaces the factory units with ultra-efficient 200 cell high-flow catalytic converters—delivering major improvements in flow, sound, and power while maintaining a more refined tone and improved emissions compatibility.
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Give your Porsche 911 (991.2) 3.0L Twin-Turbo Flat-6 the power, sound, and response it was meant to have with the Untd. Performance 200 Cell High-Flow Downpipe with Integrated Heat Shield. Designed to drastically improve exhaust flow while managing heat and preserving drivability, this premium upgrade unlocks hidden horsepower, sharper throttle response, and an intoxicating exhaust note — all while maintaining emissions-friendly performance.
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- One Piece – 100% Mandrel Bent and TIG welded
- 200 Cell – High Flow Cat
- With Heat Shield
- Constructed of top quality 304 Stainless Steel
- Bolt-on installation
- Includes Gaskets & Bolts
- Improved exhaust note
- Improved exhaust flow
- Increased HP and Torque
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Take your Audi S6, RS6, S7, or RS7 (C7) to the next level with the Untd. Performance 3″ Catless Downpipe + Mid-Pipe w/ Heat Shield. This full turbo-back flow upgrade is built for maximum performance, combining a high-flow catless downpipe and matching mid-pipe section in one seamless system. Designed for the 4.0T twin-turbo V8, this combo eliminates restrictive factory components, enhances throttle response, and transforms your exhaust note—all while integrated thermal shielding keeps engine bay temps under control.
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Unleash the full potential of your Audi A4 B7 2.0T with the Untd. Performance 3″ Catless Downpipe. Built for enthusiasts who demand more power, quicker spool, and an aggressive exhaust tone, this downpipe eliminates the factory catalytic converter and opens up the exhaust path with a full 3″ mandrel-bent design. Whether you’re daily driving or pushing hard on the dyno, this upgrade transforms your 2.0T into a sharper, more responsive machine.
A Stage 2 ECU tune is recommended for proper usage of this downpipe.
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Unleash the full performance potential of your Audi A4 or A5 B9 2.0T with the Untd. Performance 3″ Catless Downpipe. Designed to eliminate factory flow restrictions, this precision-engineered downpipe delivers massive improvements in exhaust velocity, turbo response, and power output—all while enhancing your exhaust note with a more aggressive, motorsport-inspired tone. Whether you’re building a street-tuned sleeper or a dedicated track machine, this is the essential first step in waking up your B9 2.0T.
A Stage 2 ECU tune is recommended for proper usage of this downpipe.
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