
















Alpina B8 / BMW G16 M850i Valved Sport Exhaust System
Welcome to a very vital sound and performance upgrade for the Alpina B8. From factor in this car is lacks the aggressive sound and presence that many owners desire. At Valvetronic Designs we have engineered a bespoke system for this platform that takes the enjoyment level up a few notches, adds power and a very enjoyable sound experience. This full system bolts up to OEM downpipes or can be combined with a free flow front race pipe setup. Valves are controlled via the OEM sport and sport plus buttons inside the vehicle. This system is a direct replacement for the factory OEM exhaust and is guaranteed to add power and a delicious sound through the rev range. At Valvetronic Designs, we do not compromise. Neither should you.
Features of this Valved Exhaust
- Constructed from T304 Stainless Steel
- Reuses OEM Tip Outlets
- Electronic OEM style exhaust valves for factory integration
- 15.7 lbs. Lighter than the factory exhaust
- Fully Mandrel bend for maximum flow
- Precision tig welds for high strength
- 100% REVERSIBLE, always able to go back to stock at any time
Fitment
- 2018 - 2024 BMW G16 850i Grand Coupe
- 2018 - 2024 Alpina B8
PLEASE EMAIL US AT: CUSTOMERSERVICE@VALVETRONIC.COM WITH ANY QUESTIONS
Pairs well with
FREE USA SHIPPING | On set items
EASY FINANCING | Apply at checkout
REPUTABLE SOURCE | Leading brands

Product Questions
Will this fit my vehicle?
This part is made for the models listed above. If you’re unsure, send us your year, make, and model and we’ll confirm fitment for you.
What’s included?
You’ll receive exactly what’s shown. Hardware is not included unless the product description says otherwise.
How difficult is installation?
We recommend professional installation. If you’re local, you can book an install with us directly. Some parts may need trimming, drilling, or adjustment depending on your setup.
Do you ship internationally?
Yes, we ship worldwide. Contact us if you need help placing an international order.
How do I confirm fitment before ordering?
Fitment details are listed on each product page. If you’re unsure or your build has unique specs, submit the form and our team will verify compatibility before you order.
Follow us on Instagram #BUILTBYETERNA
With over a decade of hands on experience, a growing portfolio of award winning show builds, and direct relationships with top-tier brands, we make sure you get premium products, trusted service, and real automotive expertise. Our team has built multiple award winning vehicles featured at top tier shows like SEMA and Bimmer Invasion. Everything we offer is tested, trusted, and backed by real world experience.
Eterna Motorworks can source or special-order nearly any component for your build — OEM-fitment parts, performance upgrades, carbon fiber aero, suspension, wheels, and even bespoke options depending on the platform. Click here to contact our team.

