BMW G16 M850i Gran Coupe / Alpina B8 Valved Exhaust System

Full T304 Stainless Steel System with OEM Valve Integration

Overview

The BMW G16 M850i Gran Coupe and Alpina B8 deliver incredible performance and refinement—but their stock exhaust note leaves room for excitement.
Our Valvetronic Designs Valved Exhaust System is engineered specifically for this platform to enhance presence, sharpen tone, and add measurable performance gains.

This full system bolts directly to the OEM downpipes or can be paired with a free-flow front race pipe setup. Valve operation integrates seamlessly with the factory Sport and Sport+ driving modes, allowing instant sound control from the driver’s seat. As a direct OEM replacement, it installs with no modifications and is guaranteed to deliver a richer, more engaging soundtrack through the entire rev range.

Why It Works

• Bespoke Platform Design: Engineered specifically for the G16 M850i and Alpina B8 for perfect fitment and optimized acoustics.

• Full Mandrel-Bent Construction: Maximizes exhaust flow for improved throttle response and power.

• OEM Valve Integration: Retains factory valve functionality for quiet cruising or aggressive sound on demand.

Sound & Control

• Valves Closed: Maintains refined, comfortable tone for daily driving.

• Valves Open: Delivers a deeper, more aggressive note with added volume and character.

• OEM Integration: Controlled via Sport and Sport+ modes—no extra remotes or wiring required.

Construction & Options

• Material: T304 stainless steel for durability and corrosion resistance.

• Weight Savings: 15.7 lb lighter than the factory exhaust.

• Craftsmanship: Precision TIG welds for strength and a high-end finish.

• Tips: Designed to reuse OEM tip outlets for a factory-fit appearance.

Fitment

• 2018–2024 BMW G16 M850i Gran Coupe

• 2018–2024 Alpina B8

Installation Notes

• Direct replacement for the OEM exhaust system—no cutting or welding required.

• 100% reversible—return to stock at any time.

What’s Included

• Full T304 stainless steel valved exhaust system

• Integrated OEM-style electronic valves

• All necessary hardware and clamps

Specifications

• Tubing: Full mandrel-bent T304 stainless steel

• Valves: OEM-style electronic valves with factory integration

• Weight Savings: 15.7 lb lighter than OEM

• Tip Compatibility: Designed for OEM outlet reuse