KYOSTAR Catless Downpipe for Mercedes-AMG W205 C63 C63S M177 4.0T V8

KYOSTAR Catless Downpipe for Mercedes-AMG W205 C63 C63S M177 4.0T V8

Upgrade your Mercedes-AMG W205 C63 or C63S equipped with the M177 4.0T twin-turbo V8 engine with the KYOSTAR Catless Downpipe. Designed as a performance-oriented replacement for the factory downpipe configuration, this system provides an upgraded exhaust path for compatible AMG applications.

The catless downpipe design removes the catalytic converter section from the exhaust assembly, creating a more direct turbocharger exhaust flow path for modified M177 V8 vehicles. The vehicle-specific dual downpipe configuration is designed around the Mercedes-AMG W205 C63 and C63S platform.

Features

• Catless downpipe system designed for Mercedes-AMG W205 C63 and C63S applications.

• Designed for vehicles equipped with the M177 4.0T twin-turbo V8 engine.

• Dual downpipe configuration developed for the AMG twin-turbo exhaust layout.

• Catless design removes the factory catalytic converter section for a performance-focused exhaust configuration.

• Provides a more direct exhaust path from the turbochargers compared with the factory downpipe configuration.

• Vehicle-specific flange locations, routing, and mounting design for W205 C63/C63S applications.

• Performance exhaust upgrade suitable for modified Mercedes-AMG M177 applications.

• Can enhance turbocharger and exhaust sound compared with the factory catalytic downpipe setup.

• Designed for enthusiasts seeking improved exhaust flow and a motorsport-inspired exhaust configuration.

Fitment

• 2015-2023 Mercedes-AMG W205 C63 — M177 4.0T V8

• 2015-2023 Mercedes-AMG W205 C63S — M177 4.0T V8

Note:

• This product is a catless downpipe and does not include catalytic converters.

• Please verify your vehicle year, AMG model, W205 chassis, engine configuration, turbocharger outlet connection, exhaust layout, and mounting points before purchase.

• Mercedes-AMG exhaust configurations may vary depending on production year, regional specification, and factory equipment.

• Please compare your original downpipe assembly, flange connection, oxygen sensor locations, and exhaust routing with the product photos before installation.

• Catless exhaust components may not comply with emissions regulations in certain regions. Please check local laws before purchase and installation.

Fitment Note:

Mercedes-AMG W205 C63 and C63S models use different exhaust configurations depending on production year, market specification, and factory equipment. Please verify that your vehicle is equipped with the M177 4.0T V8 engine and matches the listed application before purchase.

The supplied product information lists 2015-2023 Mercedes-AMG W205 C63 and C63S applications. Compatibility should not be determined by engine displacement alone, as exhaust routing and connection points may vary between AMG models.

Please verify turbocharger outlet connections, oxygen sensor positions, exhaust flange locations, mounting brackets, and downstream exhaust compatibility before installation.

Vehicles equipped with upgraded turbochargers, aftermarket exhaust systems, custom exhaust components, or other performance modifications may require additional fitment verification or installation adjustment.

Professional installation is recommended. Proper flange alignment, gasket sealing, oxygen sensor installation, exhaust connection tightening, mounting, and clearance inspection should be performed during installation.

Product Details

FAQ

Q: What vehicles does this catless downpipe fit?
A: This downpipe is designed for Mercedes-AMG W205 C63 and C63S applications equipped with the M177 4.0T V8 engine.

Q: What engine is this downpipe designed for?
A: The supplied product information identifies this downpipe for the Mercedes-AMG M177 4.0T twin-turbo V8 engine.

Q: Is this a catless downpipe?
A: Yes. This product does not include catalytic converters and is designed as a catless performance downpipe system.

Q: Will this fit a Mercedes-AMG C63 W205?
A: Yes. The supplied fitment information lists 2015-2023 Mercedes-AMG W205 C63 applications.

Q: Will this fit a Mercedes-AMG C63S W205?
A: Yes. The supplied fitment information lists 2015-2023 Mercedes-AMG W205 C63S applications.

Q: Does this include both left and right downpipes?
A: The product image shows a dual downpipe configuration designed for the AMG twin-turbo V8 exhaust layout.

Q: Will this increase horsepower?
A: No specific horsepower or torque increase is stated in the supplied product information, so no specific performance gain is claimed.

Q: Will this make the exhaust louder?
A: A catless downpipe can make exhaust and turbocharger sounds more noticeable compared with the factory catalytic downpipe configuration.

Q: Is ECU tuning required?
A: ECU tuning requirements are not specified in the supplied product information and may vary depending on vehicle configuration and modifications.

Q: Can this be used on public roads?
A: Catless exhaust components may not comply with emissions regulations in all regions. Please check local regulations before installation.

Q: What should I verify before purchase?
A: Please verify your AMG model, W205 chassis, M177 engine configuration, turbo outlet connection, oxygen sensor position, exhaust routing, mounting points, and downstream exhaust compatibility.

Q: Is professional installation recommended?
A: Yes. Professional installation is recommended to ensure correct alignment, sealing, sensor installation, and exhaust connection.

Warranty & Shipping

Every KYOSTAR exhaust component is inspected before shipment to ensure product condition, pipe construction, flange quality, connection points, mounting provisions, and packaging integrity before delivery.

All components are securely packaged to help reduce the risk of transportation damage. Please inspect the package and downpipe components after delivery and contact our support team if you notice missing components, shipping damage, or product-related concerns.

Please contact KYOSTAR customer support if you need assistance with vehicle fitment, installation questions, missing components, or after-sales service.