OAO Valved Cat-Back Exhaust System for BMW G15 / G16 M850i 4.4T N63 V8 T304 Stainless Steel Performance Exhaust

Elevate the Grand Touring Experience of the BMW M850i

Designed specifically for the BMW M850i platform, the OAO Valved Cat-Back Exhaust System is engineered to enhance exhaust flow, amplify the sound character of the N63 twin-turbocharged V8, and deliver a more engaging grand touring experience.

Whether cruising comfortably on long journeys or enjoying spirited driving on open roads, the OAO exhaust system unlocks a deeper, richer, and more aggressive V8 soundtrack while preserving the luxury refinement expected from BMW's flagship 8 Series.

Manufactured from premium T304 stainless steel and precision TIG welded throughout, this system offers exceptional durability, corrosion resistance, and OEM-quality fitment.

Key Features

✓ Designed for BMW G15 M850i Coupe

✓ Designed for BMW G16 M850i Gran Coupe

✓ N63 4.4L Twin-Turbocharged V8 Platform

✓ Premium T304 Stainless Steel Construction

✓ Electronic Valved Exhaust System

✓ High-Flow Cat-Back Design

✓ Precision TIG Welded Construction

✓ Direct Bolt-On Installation

✓ Improved Exhaust Flow Efficiency

✓ Reduced Exhaust Backpressure

✓ Enhanced Twin-Turbo V8 Sound Character

✓ Lightweight Performance Construction

✓ OEM-Level Fitment

Intelligent Valve Control System

Comfort Mode

With the valves closed, the system delivers a smooth and refined exhaust note that perfectly complements the luxury grand touring nature of the M850i.

Ideal for:

• Daily Driving

• Highway Cruising

• Business Travel

• Long Distance Touring

• Reduced Cabin Noise

Sport Mode

Open the valves and unleash the full personality of the BMW Twin-Turbo V8.

Benefits include:

• Louder Exhaust Volume

• Deeper V8 Tone

• Enhanced Turbocharger Acoustics

• More Aggressive Acceleration Sound

• Sharper Downshift Acoustics

• Increased Driving Engagement

Performance Benefits

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

Potential benefits may include:

• Improved Exhaust Flow

• Reduced Backpressure

• Sharper Throttle Response

• Enhanced Turbocharger Sound

• Improved Engine Breathing Characteristics

• More Dynamic Driving Experience

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

Sound Characteristics

The OAO M850i exhaust system is tuned to bring out the best qualities of the N63 V8 engine.

Drivers may experience:

• Deep and Refined Idle Tone

• Rich Twin-Turbo V8 Character

• Enhanced Mid-Range Presence

• Aggressive High-RPM Sound

• Stronger Gear Change Acoustics

• Balanced Luxury and Performance Sound Profile

Designed to provide a sophisticated yet unmistakably powerful V8 exhaust experience.

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

Every system is precision TIG welded and thoroughly inspected before shipment.

Vehicle Fitment

Compatible with:

• BMW M850i Coupe (G15)

• BMW M850i xDrive Coupe (G15)

• BMW M850i Gran Coupe (G16)

• BMW M850i xDrive Gran Coupe (G16)

Engine Platform

• N63 4.4L Twin-Turbocharged V8

Model Years

• 2019

• 2020

• 2021

• 2022

• 2023

• 2024

• 2025

• 2026

Please verify your 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 points.

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

Why Choose OAO Performance

OAO specializes in premium performance exhaust systems for BMW M, Mercedes-AMG, 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 craftsmanship, precise fitment, superior sound quality, and an elevated driving experience.

Upgrade your BMW M850i with deeper V8 acoustics, enhanced exhaust flow, and the unmistakable refinement of OAO Performance.