- Stand out from the crowd with the aggressive DINAN Exhaust note from your 440i.
- Set your 440i apart from others on the road with the perfect exhaust note.
- Dress up the rear of your 440i with some sporty style tips.
- Uses the factory brackets and hangers for a factory-like fitment
- More Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM
- 100% 304 stainless steel construction
- Helmholtz chamber to reduce drone
- Twin 89mm (3.5") laser engraved, polished or ceramic black exhaust tips
- Enjoyably louder, sportier sound
- 2017 - 2020 BMW F33 440i
- 2017 - 2020 BMW F36 440i Gran Coupe
- 2017 - 2020 BMW F33 440i xDrive
- 2017 - 2020 BMW F36 440i xDrive Gran Coupe
- 2017 - 2019 BMW F33 440i M Sport
- 2018 - 2019 BMW F36 440i Gran Coupe M Sport
Dinan engineers designed the 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 89 mm. (3.5 in.) polished exhaust tips for a tasteful, high-performance look. Maximum performance gains are 6 horsepower and 5 ft.-lbs. of torque.