DINAN FREE FLOW AXLE-BACK EXHAUST - 2019-2022 BMW M340I/M440I exhaust oxygen rich

oxygen rich

and everywhere in between

The powerful MFC (Molecular Friction Control) technology prevents formation of deposits while simultaneously reducing frictional losses

The result is a system that incorporates larger 76mm tubing (vs 70mm stock) and allows freer flow through the entirety of the system but specifically to both outer pipes when the enlarged valves are open

Massive 7” washable and reusable cotton filter with a frontal inlet and 4” rear outlet

DINAN FREE FLOW AXLE-BACK EXHAUST - 2019-2022 BMW M340I/M440I exhaust oxygen richQuad exhaust tips have been a signature feature of the most powerful letter in the automotive sphere for quite some time. It is a hallmark of the brand that Dinan has long embraced, limiting its own quad tip usage to those M cars that already sported like tip quantity from the factory. That is until now with the release of the Dinan axle back exhaust system for the G20 M340i and G22 M440i. While some may scoff at the feature being implemented into a