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Exhaust› Exhaust Pipes, Systems and Components

Dinan

FREEFLOW EXHAUST F33/F36 440i

$1,743.95 $1,649.95 Save $94.00

SKU: D00G D660-0077-BLK

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

Part #: D660-0077-BLK

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.

Features:

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

Stainless Steel - Black Tips - F33/F36

MIA's Description

The Dinan D660-0077-BLK Free Flow Axle-Back Exhaust system is designed for the 2017-2020 BMW 440i (F33/F36 chassis). It improves exhaust flow for increased power and a sportier sound, while a Helmholtz chamber effectively reduces drone. This system also enhances the natural burbles and pops of the engine, providing a more engaging driving experience.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandDinan
Part NumberD00G D660-0077-BLK

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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