$960.00
Unlock the full potential of your Mercedes-AMG CLS63 with the Untd. Performance Catless Downpipe, designed specifically for the M157 and M278 engines in the W218 chassis (2013-2017). This high-performance downpipe is engineered to optimize exhaust flow, delivering impressive power gains and an exhilarating driving experience that reflects the true spirit of AMG performance.
Available on backorder
Unleash the full fury of your twin-turbo V8 with the Untd. Performance Catless Downpipe, engineered specifically for the Mercedes-Benz AMG CLS63 W218 equipped with the M157 or M278 5.5L BiTurbo engine. Designed for maximum flow and performance, this race-inspired upgrade removes the restrictive factory catalytic converters—unlocking raw power, sharper turbo response, and an aggressive exhaust note that matches the CLS63’s menacing presence.
Catless, High-Flow Design
The Untd. Performance Downpipe eliminates the OEM catalytic converters entirely, freeing up exhaust flow and significantly reducing backpressure. This allows the BiTurbo V8 to breathe more efficiently—delivering quicker spool, improved throttle response, and substantial power gains across the rev range.
Explosive Performance Gains
Expect increased torque, sharper low-end response, and faster turbo ramp-up thanks to the unrestrained flow. When paired with a performance tune, this catless downpipe supports dramatic increases in horsepower and is a must-have for those pushing their M157 or M278 platforms into serious power territory.
Aggressive, Motorsport-Inspired Sound
With the cats removed, the exhaust tone transforms into a thunderous, deep roar under load. Turbo spool, crackles, and overrun become more pronounced, delivering the sound and presence worthy of the AMG badge—perfect for drivers who want their CLS63 to sound as brutal as it feels.
Precision-Built from 304 Stainless Steel
Crafted from durable 304 stainless steel, this downpipe is TIG-welded and CNC-machined for a direct bolt-on fit and long-term durability under high heat and pressure. Built to withstand demanding conditions both on the road and at the track.
Track-Ready, Competition-Focused
Ideal for off-road builds, dyno tuning, or motorsport applications, this downpipe is designed to handle aggressive tuning setups and increased boost levels. It’s the ultimate starting point for any performance-focused CLS63 build.
Mercedes-Benz CLS63 AMG W218 (2013–2017)
M157 5.5L BiTurbo V8
M278 5.5L Twin-Turbo V8 (4MATIC variants)
Whether you’re chasing quarter-mile records or just want to experience your CLS63’s full potential, the Untd. Performance Catless Downpipe delivers unfiltered power and sound that redefines what your AMG can do. From daily drives to track days, this is the upgrade that sets your build apart.
⚠️ Note: Intended for off-road and track use only. Not emissions-compliant in all regions. Please check local laws before installation.
