Armytrix BMW G14/G15 M850i xDrive (Non-OPF) 2018- OE Valvetronic Exhaust system

Command the full potential of your N63B44-powered BMW G14 or G15 with the ARMYTRIX Valvetronic Exhaust System—precision-built for the 4.4L twin-turbo V8 M850i xDrive. Designed exclusively for Non-OPF models, this high-performance cat-back system delivers a deep, aggressive tone with zero compromise on driveability or control.

Seamlessly integrating with your factory valvetronic system, this system features wireless valve control via ARMYTRIX’s proprietary remote or app interface. Flip the switch between refined stealth and full-throttle roar—perfectly tuned for daily comfort and weekend adrenaline.

Fitment:

• Model: BMW M850i xDrive

• Chassis: G14 Cabriolet / G15 Coupé

• Years: 2018–Present

• Engine: N63B44 4.4L V8 Twin-Turbo (Non-OPF only)

• Drive Orientation: Left-Hand Drive & Right-Hand Drive Compatible

Key Features:

OE-Integrated Valvetronic Control

Leverages factory valvetronic mechanisms for seamless valve operation without modifying OEM electronics.

Wireless Remote + Smartphone App Control

Toggle exhaust modes instantly using the included remote key fob or ARMYTRIX mobile app for real-time sound customization.

Check Engine Light (CEL) Prevention

Built-in simulators help suppress OPF/catalytic converter-related fault codes—reducing the chance of CEL activation post-install.

Precision-Built Performance Exhaust

• Main Piping: 3” mandrel-bent stainless steel for unrestricted flow and maximum durability

• Exhaust Tips: Aggressive quad 3.5” tips available in various finishes to enhance rear-end aesthetics

• Welding: Expert TIG-welded construction for performance and longevity

Direct Bolt-On Installation

Engineered for plug-and-play fitment to OEM mounting points. No cutting, no welding, no hassle.

Included Armynator Module

Purchase the full system (Catback + Downpipe) and receive the ARMYNATOR control unit for expanded functionality and personalization.

Valvetronic Sound Modes:

• Closed Valve Mode – Quiet and refined for city driving or cold starts

• Open Valve Mode – Thunderous, full-bodied growl that unleashes the V8's true character

• Auto Mode – Dynamic valve response based on throttle input and driving behavior

What’s Included:

• ARMYTRIX Valvetronic Cat-Back Exhaust System

• Quad 3.5” Exhaust Tips (multiple finishes available)

• Wireless Remote Control Key Fob

• Smartphone App Integration (iOS & Android)

• Full Mounting Kit & Install Guide

• Armynator (with full system purchase: catback + downpipe)

Important Notes:

• Fits Non-OPF BMW M850i xDrive only

• Uses factory valve motors – No additional wiring or valve modules needed

• Recommended: Verify VIN to confirm compatibility

Where Precision Engineering Meets V8 Fury

The ARMYTRIX Valvetronic Exhaust System for the BMW M850i G14/G15 isn’t just an upgrade—it’s a transformation. From the subtle purr of a closed-valve commute to the unfiltered rage of an open-valve sprint, you’re always in control.

Experience intelligent sound, flawless fitment, and raw emotion—backed by ARMYTRIX innovation.