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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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Turn your AMG S63 into a true performance monster with the Untd. Performance Catless Downpipe—purpose-built for the M177 4.0L BiTurbo V8 found in the 2019+ W222 S-Class. Designed for maximum flow and race-inspired power, this downpipe eliminates the restrictive factory catalytic converters, dramatically improving exhaust velocity, turbo response, and throttle precision. The result is raw, unfiltered performance that completely transforms the driving experience of your S-Class AMG.
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Unlock the full performance potential of your Mercedes-Benz AMG S63, S600, S500, or S400 W222 with the Untd. Performance Catless Downpipe. Designed specifically for the M157 5.5L V8 twin-turbo engine, this catless downpipe replaces the restrictive factory catalytic converters, dramatically increasing exhaust flow and reducing turbo lag for quicker spool times and improved overall engine efficiency. The result is a significant boost in power, an enhanced driving experience, and an aggressive exhaust note that truly brings your vehicle to life.
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Take your AMG to the next level with the Untd. Performance Catless Downpipe for the W222 S63. Built for the M177 4.0L Bi-Turbo V8, this high-performance upgrade removes the factory catalytic converters to maximize exhaust flow, turbo response, and sound—delivering the raw power and presence your S63 was truly meant to have.
Key Features:
Maximum Flow, Zero Restriction
This catless design eliminates the bottlenecks in the stock system, significantly reducing backpressure for faster turbo spool and increased power across the entire rev range. Perfect for tuned setups looking to extract every bit of performance from the M177 platform.
Bold, Unfiltered Exhaust Note
Unleash a deeper, louder, and more aggressive exhaust tone that brings out the true voice of the twin-turbo V8. Turbo whistle, crackles, and throttle response are all elevated—turning every drive into a statement.
Track-Ready Build Quality
Constructed from premium 304 stainless steel with TIG welds and CNC-machined flanges, this downpipe is engineered for extreme heat and high-boost reliability. Built to perform, whether you’re carving highways or hitting the dyno.
Precision Fitment
Designed specifically for the W222 chassis, this downpipe installs cleanly with OEM mounting points and connects seamlessly to factory or aftermarket exhaust systems.
Compatibility:
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Mercedes-Benz S63 AMG (W222) – 4.0L V8 Bi-Turbo (M177)
(Fits both sedan and coupe models equipped with the M177 engine)
Whether you’re chasing faster spool, more aggressive sound, or pure power, the Untd. Performance Catless Downpipe delivers. It’s the essential upgrade for any S63 owner ready to break free from factory limitations.
⚠️ Note: For off-road and race use only. Not emissions-compliant in all areas. Please check local regulations before installation.
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Elevate your AMG S63 to its true potential with the Untd. Performance Catted Downpipe w/ Heat Shield—precision-engineered for the 2019+ W222 platform powered by the M177 4.0L Biturbo V8. Designed for enthusiasts who demand maximum performance without compromising refinement, this downpipe offers enhanced exhaust flow, improved turbo response, and a deeper, more commanding exhaust note—all while retaining a high-flow catalytic converter and integrated heat shielding for optimal drivability.