OAO Valved Cat-Back Exhaust System for Mercedes-Benz W212 E63 AMG / C218 CLS63 AMG / X218 CLS63 AMG M157 5.5T V8 T304 Stainless Steel Performance Exhaust

Unleash the Full Sound of the AMG Bi-Turbo V8

Designed specifically for the Mercedes-Benz E63 AMG and CLS63 AMG equipped with the legendary M157 5.5L Bi-Turbo V8 engine, the OAO Valved Cat-Back Exhaust System is engineered to enhance exhaust flow, improve sound quality, and deliver a more aggressive AMG driving experience.

Developed for enthusiasts who demand both luxury and performance, this system transforms the factory exhaust note into a deeper, louder, and more emotional V8 soundtrack while maintaining everyday drivability.

Constructed from premium T304 stainless steel and precision TIG welded throughout, the OAO exhaust system offers exceptional durability, corrosion resistance, and OEM-level fitment.

Key Features

✓ Designed for Mercedes-Benz E63 AMG & CLS63 AMG

✓ M157 5.5L Bi-Turbo V8 Platform

✓ Premium T304 Stainless Steel Construction

✓ Electronic Valved Exhaust System

✓ High-Flow Cat-Back Design

✓ Precision TIG Welded

✓ Direct Bolt-On Installation

✓ Improved Exhaust Flow Efficiency

✓ Reduced Exhaust Backpressure

✓ Enhanced AMG V8 Sound Character

✓ Lightweight Performance Construction

✓ OEM-Level Fitment

Intelligent Valve Control System

Comfort Mode

With the valves closed, the system delivers a refined and comfortable driving experience while maintaining the luxury characteristics expected from a premium AMG vehicle.

Perfect for:

• Daily Driving

• Highway Cruising

• Long Distance Touring

• Reduced Cabin Noise

Sport Mode

Open the valves and unleash the full personality of the AMG Bi-Turbo V8.

Benefits include:

• Louder Exhaust Volume

• Deeper AMG V8 Tone

• Enhanced Turbocharged Character

• More Aggressive Acceleration Acoustics

• Sharper Downshift Sound

• Increased Driver Engagement

Performance Benefits

The OAO Cat-Back Exhaust System is engineered to optimize exhaust efficiency while enhancing overall driving enjoyment.

Potential benefits may include:

• Improved Exhaust Flow

• Reduced Exhaust Restriction

• Sharper Throttle Response

• Enhanced Turbocharger Acoustics

• Improved Engine Character

• More Engaging Driving Experience

Performance gains may vary depending on ECU calibration and supporting modifications.

Sound Characteristics

The OAO M157 exhaust system is tuned to deliver a true AMG sound experience:

• Deep and Powerful Idle Tone

• Rich Mid-Range V8 Presence

• Enhanced Twin-Turbo Acoustics

• Aggressive High-RPM Sound

• Stronger Downshift Crackles

• Refined Comfort Mode Operation

Designed to bring out the iconic AMG V8 character while maintaining daily usability.

Premium T304 Stainless Steel Construction

Manufactured from high-grade T304 stainless steel for maximum durability and long-term reliability.

Advantages include:

• Excellent Corrosion Resistance

• Superior Heat Resistance

• Long Service Life

• Lightweight Performance Design

• High Structural Strength

Each exhaust system is precision TIG welded and carefully inspected before shipment.

Vehicle Fitment

Compatible with:

• Mercedes-Benz E63 AMG W212

• Mercedes-Benz E63 AMG S W212

• Mercedes-Benz CLS63 AMG C218

• Mercedes-Benz CLS63 AMG S C218

• Mercedes-Benz CLS63 AMG X218 Shooting Brake

Engine Platform

• M157 5.5L Bi-Turbocharged V8

Model Years

• 2011

• 2012

• 2013

• 2014

• 2015

• 2016

Please verify vehicle specifications and exhaust configuration before ordering.

Package Includes

• OAO Valved Cat-Back Exhaust System

• Electronic Valve Control Module

• Remote Controllers

• Installation Hardware Kit

• Protective Packaging

Installation

Direct bolt-on design utilizing factory mounting locations.

Professional installation is strongly recommended for optimal fitment and performance.

Why Choose OAO Performance

OAO specializes in premium performance exhaust systems for Mercedes-AMG, BMW M, Audi RS, Porsche, Ferrari, Lamborghini, and other high-performance platforms.

From valved cat-back systems and downpipes to titanium exhaust solutions and OEM/ODM manufacturing, every OAO product is engineered to deliver exceptional fitment, craftsmanship, sound quality, and driving excitement.

Upgrade your M157-powered E63 AMG or CLS63 AMG with the deep V8 sound, performance presence, and driving emotion it deserves.