Description
Dinan Free Flow Axle-Back Exhaust – BMW M340i/M440i is a Dinan axle-back exhaust system. Supplied for Stainless Steel – Black Tips – G20 / G22 / G23 / G26.
Key Features:
- Bolt-on rear section: Replaces the factory muffler section only, so fitting is straightforward.
- Deeper exhaust note: A fuller tone than stock without the drone that cheap systems bring.
- Vehicle-specific: Built for the chassis listed below, using factory mounting points.
- Stainless construction: Dinan builds its exhaust systems from stainless steel.
Fitment:
- BMW M340i 2020-2026
- BMW M440i 2020-2026
Dinan part D660-0085-BLK. Confirm fitment against your exact model and build date before ordering.

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