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Valvetronic Valved Sport Exhaust System - Alpina B8 / BMW M850i Gran Coupe (G16) 2018-2024
Lease for as low as $/week
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
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Bespoke Platform Design: Engineered specifically for the G16 M850i and Alpina B8 for perfect fitment and optimized acoustics.
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Full Mandrel-Bent Construction: Maximizes exhaust flow for improved throttle response and power.
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OEM Valve Integration: Retains factory valve functionality for quiet cruising or aggressive sound on demand.
Sound & Control
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Valves Closed: Maintains refined, comfortable tone for daily driving.
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Valves Open: Delivers a deeper, more aggressive note with added volume and character.
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OEM Integration: Controlled via Sport and Sport+ modes—no extra remotes or wiring required.
Construction & Options
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Material: T304 stainless steel for durability and corrosion resistance.
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Weight Savings: 15.7 lb lighter than the factory exhaust.
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Craftsmanship: Precision TIG welds for strength and a high-end finish.
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Tips: Designed to reuse OEM tip outlets for a factory-fit appearance.
Fitment
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2018–2024 BMW G16 M850i Gran Coupe
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2022–2024 Alpina B8
Installation Notes
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Direct replacement for the OEM exhaust system—no cutting or welding required.
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100% reversible—return to stock at any time.
What’s Included
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Full T304 stainless steel valved exhaust system
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Integrated OEM-style electronic valves
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All necessary hardware and clamps
Specifications
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Tubing: Full mandrel-bent T304 stainless steel
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Valves: OEM-style electronic valves with factory integration
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Weight Savings: 15.7 lb lighter than OEM
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Tip Compatibility: Designed for OEM outlet reuse
**Free Flow Front Pipes are designed for use on vehicles that will not be driven on public roadways or highways. Designed for off-road / track use only.
Returns may be accepted within 14 days of purchase pending Return Merchandise Authorization (RMA). No returns or cancellations on special order items. All returns will be charged a 20% restocking fee, no exceptions.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. Item must be able to be resold as new.
Several types of goods are exempt from being returned. Hazardous materials, fluids, greases, chemicals, and clothing are not able to return.
Free shipping is available within the lower 48 states for most orders totaling $199 or more. A free shipping option will be available during checkout. This offer is for delivery address in the continental United States and excludes shipments going to Alaska, Hawaii, Military Boxes, and items that require freight shipping.
Processing Time
Patterson Performance stocks a large quantity of items at any given time. Some items may require drop shipping from one of our various distributors. In stock items will ship within 1-2 business days. If you're needing your product quickly, please contact us to verify product availability before placing your order. Orders requiring additional verification (security concerns, incorrect information, etc.) may need additional processing time. Estimated shipping dates are not guaranteed and are subject to change based on inventory levels and manufacturer lead times. Backordered items are shipped immediately once available.
Items ship daily, If the item you ordered is not in stock, a member of our team will contact you via email / phone.
Patterson Performance will only ship to an address that varies from your billing address if payment is made via Paypal or a financing partner.
Patterson Performance ships from multiple warehouses throughout the United States, and sometimes from manufacturers overseas.
You can simply contact us via email / telephone for a live inventory check
Find more information at www.P65Warnings.ca.gov.