Mercedes Benz E63 / E63S W213 & AMG GT63 / GT63S X290 (4-DOOR) 4.0T M177 - Racing Downpipes

Upgrade your Mercedes-AMG exhaust system with the HARPIA Performance Catless Racing Downpipes, designed for selected Mercedes-AMG models equipped with the 4.0L V8 BiTurbo M177 engine and the corresponding downpipe layout.

The high-flow catless design replaces the restrictive factory catalytic converters, significantly reducing exhaust backpressure and improving exhaust gas flow. This allows the turbochargers to operate more efficiently, providing improved turbo response, a more aggressive exhaust note, and greater performance potential when combined with appropriate ECU tuning.

Manufactured from high-quality stainless steel with precision TIG-welded construction, the system is designed for high-temperature performance applications and direct-fit installation on compatible vehicles.

Key Features:

• Catless racing design
• High-flow construction
• Stainless steel construction
• Precision TIG welds
• Reduced exhaust backpressure
• Improved exhaust gas flow
• Improved turbo response
• More aggressive exhaust sound
• Direct-fit design for compatible applications
• Suitable for tuned and high-performance builds

Confirmed Vehicle Compatibility:

• Mercedes-AMG E63 W213 – 4.0L V8 BiTurbo M177
• Mercedes-AMG E63 S W213 – 4.0L V8 BiTurbo M177
• Mercedes-AMG E63 S213 Estate – 4.0L V8 BiTurbo M177
• Mercedes-AMG E63 S S213 Estate – 4.0L V8 BiTurbo M177
• Mercedes-AMG GT 63 X290 4-Door Coupé – 4.0L V8 BiTurbo M177
• Mercedes-AMG GT 63 S X290 4-Door Coupé – 4.0L V8 BiTurbo M177

Potential Additional Compatibility:

• Mercedes-AMG S63 W222 – 4.0L V8 BiTurbo M177
• Mercedes-AMG S63 Coupé C217 – 4.0L V8 BiTurbo M177
• Mercedes-AMG S63 Cabriolet A217 – 4.0L V8 BiTurbo M177

Important: S63 compatibility must be confirmed before ordering. Having the same M177 engine does not automatically guarantee identical downpipe fitment. Please contact us with your VIN before ordering if your vehicle is not one of the confirmed applications above.

What’s Included:

• 2 × Front catless racing downpipes
• 2 × Connecting / mid pipes
• 2 × Exhaust clamps
• Installation hardware as pictured

Warranty:

6-month HARPIA Performance Parts commercial warranty covering manufacturing defects.

Brand

Harpia Performance

Downpipe

Downpipe

Orders ship within 1-2 business days. Returns accepted within 30 days on unused parts.