GFBV D660-0077 Dinan Free Flow Axle-Back Exhaust - 2017-2020 BMW 440i - Fits select 2017-2020 BMW models

Stainless Steel - Black Tips - F33/F36

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.; Factory computer controlled exhaust valve is eliminated.; 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.

Features and Benefits: 100% 304 stainless steel construction; Enjoyably louder, sportier sound; Helmholtz chamber to reduce drone; More Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM; Twin 89mm (3.5") laser engraved, polished or ceramic black exhaust tips; Uses the factory brackets and hangers for a factory-like fitment

DIN ESK