Dinan · New
Dinan 17-20 BMW 440i (F33/F36) Free Flow Axleback Exhaust System - Polished Tips
MPN D660-0077 · Store SKU dnnD660-0077
Supplier stock checked 11/7/2026, 1:45:46 PM UTC. Adding a part does not reserve it.
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Product details
Dinan engineers designed the F33/F36 440i exhaust to improve exhaust flow by reducing back pressure, resulting in increased power output and a great sporty sound that is civilized when you want it to be, and pleasantly aggressive under hard acceleration. Not only is the tone improved but the additional burbles and pops that come with it are simply intoxicating. Dinan also incorporates a Helmholtz chamber design that reduces resonance or"drone" at low RPM. The system is built to exacting specifications to ensure perfect fit using the factory hangers. It is made from 100% 16 gauge 304 stainless steel and will resist corrosion for years to come. The design features twin 89mm (3.5") polished or cermic black exhaust tips for a tasteful high-performance look. Factory computer controlled exhaust valve is eliminated. Dinan Free Flow Axle-Back Exhaust - 2017-2020 BMW 440i Stainless Steel - Black Tips - F33/F36
Manufacturer fitment & guides
Check D660-0077 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
