OAO High Performance Downpipes for Mercedes-Benz AMG C63 / C63 S W205 4.0T M177 Bi-Turbo V8 T304 Stainless Steel Exhaust System

Unleash the Full Power of the AMG M177 Bi-Turbo V8

Engineered specifically for the Mercedes-Benz AMG C63 and C63 S (W205) equipped with the handcrafted 4.0L M177 twin-turbocharged V8 engine, the OAO High Performance Downpipes are designed to maximize exhaust flow, reduce backpressure, and unlock the true performance potential of AMG's iconic V8 platform.

Positioned directly after the turbochargers, the OAO downpipes significantly improve exhaust gas evacuation, allowing the turbochargers to spool more efficiently while enhancing throttle response, increasing engine efficiency, and producing a deeper, more aggressive AMG exhaust note.

Constructed from premium T304 stainless steel with precision TIG welding, every downpipe is built for exceptional durability, superior heat resistance, and OEM-quality fitment.

Key Features

✓ Designed for Mercedes-Benz AMG C63 / C63 S (W205)

✓ M177 4.0L Bi-Turbo V8 Engine

✓ High-Flow Performance Downpipes

✓ Premium T304 Stainless Steel Construction

✓ Precision TIG Welded

✓ Mandrel-Bent Tubing Design

✓ CNC Precision-Machined Flanges

✓ Improved Exhaust Gas Flow

✓ Reduced Exhaust Backpressure

✓ Faster Turbocharger Response

✓ Enhanced Engine Performance

✓ OEM-Level Direct Bolt-On Fitment

Why Upgrade Your Downpipes?

The factory downpipes are engineered primarily to satisfy emissions regulations and noise standards, creating additional exhaust restriction immediately after the turbochargers.

The OAO High Performance Downpipes are designed to improve turbo efficiency and maximize exhaust flow, helping the M177 engine perform at its full potential.

Potential benefits may include:

• Faster Turbo Spool

• Reduced Exhaust Restriction

• Improved Exhaust Flow Efficiency

• Sharper Throttle Response

• Enhanced Engine Breathing

• Improved Mid-Range Torque

• Stronger High-RPM Performance

• Better Compatibility with ECU Tuning

Actual performance gains may vary depending on supporting modifications and ECU calibration.

Motorsport Engineering

Every OAO downpipe is developed using performance-focused engineering principles.

Engineering advantages include:

• Optimized Pipe Diameter

• Smooth Exhaust Gas Transition

• Reduced Flow Turbulence

• Lower Backpressure

• Improved Turbocharger Efficiency

• Better Thermal Management

Designed to integrate seamlessly with factory or aftermarket cat-back exhaust systems.

Sound Characteristics

The OAO Performance Downpipes dramatically enhance the signature AMG V8 soundtrack.

Drivers may experience:

• Deeper Cold Start

• Richer Twin-Turbo V8 Tone

• Increased Turbocharger Whistle

• Stronger Acceleration Sound

• Sharper Crackles and Burbles (depending on ECU calibration)

• Louder Overall Exhaust Volume

• Improved High-RPM Exhaust Note

Combined with a performance exhaust system, the result is a true motorsport-inspired AMG sound experience.

Premium T304 Stainless Steel Construction

Manufactured using high-grade T304 stainless steel for outstanding durability under extreme temperatures.

Advantages include:

• Excellent Corrosion Resistance

• Superior Heat Resistance

• Long Service Life

• High Structural Strength

• Precision CNC Flanges

• Motorsport-Grade TIG Welding

Every downpipe is individually inspected before shipment to ensure exceptional quality and fitment.

Vehicle Fitment

Compatible with:

• Mercedes-Benz AMG C63 Sedan (W205)

• Mercedes-Benz AMG C63 S Sedan (W205)

• Mercedes-Benz AMG C63 Coupe (C205)

• Mercedes-Benz AMG C63 S Coupe (C205)

• Mercedes-Benz AMG C63 Cabriolet (A205)

• Mercedes-Benz AMG C63 S Cabriolet (A205)

Engine Platform

• M177 4.0L Bi-Turbo V8

Model Years

• 2015

• 2016

• 2017

• 2018

• 2019

• 2020

• 2021

Please verify your vehicle model year and engine configuration before ordering.

Package Includes

• OAO High Performance Downpipes (Left & Right)

• Installation Hardware Kit

• Protective Packaging

Installation

Direct bolt-on installation using factory mounting locations.

Professional installation is strongly recommended to ensure proper fitment and optimal performance.

ECU tuning is recommended to maximize power output and avoid potential check engine lights after installation.

Important Notes

Available in Catless and High-Flow Sport Catalytic configurations.

This product is intended for off-road or motorsport use where permitted by local regulations.

Please check your local emissions laws before purchasing or installing this product.

Why Choose OAO Performance

OAO designs premium exhaust systems for Mercedes-AMG, BMW M, Audi RS, Porsche, Nissan GT-R, Ferrari, Lamborghini, Aston Martin, and other world-renowned performance vehicles.

Every OAO exhaust component is developed through precision engineering, extensive fitment testing, and motorsport-inspired design to deliver exceptional performance, durability, and sound quality.

Upgrade your Mercedes-AMG C63 / C63 S W205 with OAO Performance Downpipes and experience faster turbo response, increased exhaust flow, and the unmistakable roar of the handcrafted AMG M177 V8.