SLE A45 / A45S AMG W177 (2.0T M139) Catless Downpipe (2019–Present)

SLE A45 / A45S AMG W177 (2.0T M139) Catless Downpipe (2019–Present)

The SLE Catless Downpipe is designed to bring out the full performance potential of the Mercedes-AMG A45 and A45S W177, powered by the 2.0L M139 turbo engine. By eliminating the factory catalytic converter, this downpipe significantly reduces backpressure, improves turbo spool, and delivers a louder, more aggressive exhaust tone.

Built from T304 stainless steel with TIG-welded and back-purged construction, this downpipe is engineered to handle high temperatures and boost pressures in tuned or track-driven applications. It’s a direct bolt-on solution and pairs well with stock or aftermarket exhaust systems.

Product Features

• Catless high-flow design for increased power and turbo efficiency
• Compatible with M139 2.0L I4 turbocharged engine
• T304 stainless steel for strength and corrosion resistance
• TIG-welded and back-purged for long-term durability
• Aggressive exhaust tone with sharper throttle response
• Direct bolt-on fitment, no modifications required

Vehicle Compatibility

• Mercedes-AMG A45 / A45S W177 (2019–Present)

Disclaimer: This product is intended for OFF-ROAD OR RACING USE ONLY. It is not legal for use on public roads in vehicles subject to emissions regulations. A stage 2 ECU tune is required to prevent a check engine light (CEL).