OAO Valvetronic Cat-Back Exhaust System for Mercedes-Benz W464 G500 / G550 / G63 AMG 4.0T V8

Unleash the Power of the G-Class V8

Designed specifically for the Mercedes-Benz W464 G-Class equipped with the 4.0L twin-turbocharged V8 engine, the OAO Valvetronic Cat-Back Exhaust System is engineered to enhance exhaust flow, amplify the character of the V8 powertrain, and deliver a more aggressive performance soundtrack.

Developed for the G500, G550, and AMG G63, the OAO system combines premium exhaust construction with electronically controlled valves, allowing drivers to switch between a refined, controlled exhaust tone and a deeper, louder, more aggressive V8 soundtrack.

Manufactured from premium T304 stainless steel with precision TIG welding, mandrel-bent tubing, and high-flow muffler technology, the OAO system is engineered for durability, heat resistance, precise fitment, and premium performance.

Key Features

✓ Designed for Mercedes-Benz W464 G-Class

✓ Compatible with G500 / G550 / G63 AMG

✓ 4.0L Twin-Turbocharged V8 Engine

✓ Valvetronic Cat-Back Exhaust System

✓ Electronic Exhaust Valve Control

✓ Premium T304 Stainless Steel Construction

✓ High-Flow Performance Muffler Design

✓ Precision TIG Welded

✓ Mandrel-Bent Exhaust Tubing

✓ Optimized Exhaust Gas Flow

✓ Reduced Exhaust Restriction

✓ Enhanced V8 Exhaust Character

✓ Direct-Fit Performance Design

Intelligent Valvetronic Exhaust Control

The OAO electronic valve system gives you complete control over the sound of your G-Class.

Comfort Mode

With the valves closed, the system delivers a deeper but controlled exhaust tone for comfortable everyday driving.

Ideal for:

• Daily Commuting

• Highway Cruising

• Long-Distance Touring

• Residential Areas

• Reduced Exhaust Volume

• Comfortable Luxury SUV Driving

Enjoy the refined character of the G-Class while maintaining a more controlled exhaust presence.

Sport Mode

Open the valves and unleash the full character of the 4.0L twin-turbo V8.

Experience:

• Increased Exhaust Volume

• Deeper V8 Exhaust Tone

• Stronger Turbocharger Acoustics

• Sharper Acceleration Sound

• More Aggressive Downshift Acoustics

• Enhanced High-RPM V8 Character

• More Emotional AMG Driving Experience

With the valves open, the OAO system transforms the G-Class into a much more aggressive performance SUV.

Performance-Oriented Cat-Back Design

The OAO Cat-Back Exhaust System replaces the rear exhaust section with a high-flow performance configuration designed to improve exhaust efficiency and enhance the overall driving experience.

Potential benefits may include:

• Improved Exhaust Gas Flow

• Reduced Exhaust Backpressure

• Sharper Throttle Response

• Enhanced Turbocharger Sound

• Improved High-RPM Exhaust Flow

• Reduced Exhaust System Weight

• Stronger V8 Exhaust Acoustics

• Better Compatibility with Performance Downpipes

• Improved Overall Exhaust Efficiency

Actual performance gains may vary depending on vehicle configuration and supporting modifications.

Engineered for the Mercedes-Benz 4.0T V8

The W464 G-Class combines legendary off-road capability with modern turbocharged V8 performance.

The OAO Valvetronic Exhaust is engineered around the characteristics of the 4.0L twin-turbocharged V8 platform.

Key design considerations include:

• High-Flow Exhaust Routing

• Smooth Exhaust Gas Transitions

• Optimized Tubing Diameter

• Reduced Internal Turbulence

• High-Temperature Resistance

• Performance-Tuned Muffler Design

• Precision Electronic Valve Integration

The result is a performance exhaust system designed to complement both daily-driven and performance-oriented G-Class builds.

Enhanced G-Class V8 Sound

The 4.0L twin-turbo V8 delivers strong torque and a distinctive performance character.

The OAO Valvetronic system enhances that personality with a carefully tuned exhaust soundtrack:

• Deeper Cold Start

• Richer V8 Exhaust Tone

• Stronger Turbocharger Acoustics

• Sharper Throttle Blips

• More Aggressive Acceleration Sound

• Enhanced Downshift Acoustics

• Stronger High-RPM Character

• More Pronounced AMG Performance Sound

Whether cruising through the city or accelerating on an open road, the valve-controlled system lets you choose the sound that fits the moment.

Premium T304 Stainless Steel Construction

Manufactured from high-quality T304 stainless steel to withstand high exhaust temperatures, demanding driving conditions, and long-term use.

Advantages include:

• Excellent Corrosion Resistance

• Superior Heat Resistance

• High Structural Strength

• Lightweight Performance Construction

• Precision TIG Welding

• CNC-Machined Connections

• Long Service Life

• Premium Surface Finish

Every OAO exhaust system undergoes strict quality inspection before shipment to ensure accurate dimensions and precise fitment.

Aggressive G-Class Exhaust Styling

The OAO exhaust system is designed to complement the iconic boxy shape and aggressive appearance of the G-Class.

Optional exhaust tip finishes may include:

• Carbon Fiber Exhaust Tips

• Titanium Burnt Exhaust Tips

• Polished Stainless Steel Tips

• Matte / Dark Performance Tips

Large-diameter performance tips provide a more distinctive and muscular rear appearance.

Vehicle Fitment

Compatible with applicable Mercedes-Benz W464 G-Class models equipped with the 4.0L twin-turbocharged V8:

Mercedes-Benz G500 / G550

• W464 G500

• W464 G550

• 4.0L Twin-Turbo V8

Mercedes-AMG G63

• W464 G63 AMG

• 4.0L Twin-Turbo V8

Model Years

• 2018

• 2019

• 2020

• 2021

• 2022

• 2023

• 2024

• 2025+

Please verify your exact model, production year, engine configuration, exhaust layout, and rear bumper design before ordering.

Package Includes

• OAO Valvetronic Cat-Back Exhaust System

• Electronic Valve Control Module

• Wireless Remote Controller

• Exhaust Installation Hardware

• Clamps / Connection Components

• Protective Packaging

Installation

Designed as a direct-fit cat-back exhaust upgrade utilizing factory mounting locations and exhaust connection points.

No permanent cutting or welding is required for standard installation.

Professional installation is recommended to ensure proper alignment, sealing, and valve operation.

Compatible Performance Upgrades

The OAO W464 Valvetronic Cat-Back Exhaust System can be paired with:

• OAO 4.0T Performance Downpipes

• High-Flow Downpipes

• Performance Air Intake

• ECU Performance Calibration

• Turbocharger Upgrades

• Intercooler Upgrades

• Carbon Fiber Exhaust Tips

• Titanium Exhaust Tips

A properly matched performance setup can further enhance exhaust flow, turbocharger response, and overall V8 sound character.

Important Notes

This product is designed for performance, off-road, or motorsport applications where permitted by local regulations.

Please verify local emissions and noise regulations before purchasing or installing this product.

Sound and performance characteristics may vary depending on downpipes, catalysts, ECU tuning, valve settings, and other vehicle modifications.

Vehicle compatibility may vary by model year, regional specification, engine version, and factory exhaust configuration. Please confirm fitment before ordering.

Why Choose OAO Performance

OAO Performance specializes in premium exhaust systems and performance components for Mercedes-Benz, Mercedes-AMG, BMW M, Audi RS, Porsche, Ferrari, Lamborghini, Jaguar, Land Rover, Aston Martin, Nissan GT-R, Chevrolet Corvette, and other high-performance vehicles.

Every OAO exhaust system combines advanced engineering, premium materials, precision TIG welding, electronic valve technology, and rigorous quality control to deliver exceptional fitment, durability, and sound.

Upgrade your Mercedes-Benz W464 G500, G550, or AMG G63 with the OAO Valvetronic Cat-Back Exhaust System and experience a deeper, louder, and more commanding 4.0L V8 soundtrack while retaining complete control over your driving experience.