The Dinan High Flow Mid-pipe for the F30 340i and F32 440i allows for an aggressive tone to be achieved out of the stock system. Coupled with the associated Dinan exhaust the sound is further perfected into an aggressive growl that is hard to ignore. This full mid-section removes the factory center section, including both resonators, and replaces it with straight through 3.25" T304 stainless steel tubing for better flow, and sound while also reducing the weight by 3 pounds.

Dinan Dinan High Flow Mid-Pipe - 2016-2020 BMW 340i/440i D660-0057

Specifications:

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This Part Fits:

Year	Make	Model	Submodel	Notes
2016	BMW	340i	Base
2017	BMW	340i	Base
2018	BMW	340i	Base
2016	BMW	340i xDrive	Base
2017	BMW	340i xDrive	Base
2018	BMW	340i xDrive	Base
2017	BMW	440i	Base
2018	BMW	440i	Base
2019	BMW	440i	Base
2020	BMW	440i	Base
2017	BMW	440i xDrive	Base
2018	BMW	440i xDrive	Base
2019	BMW	440i xDrive	Base
2020	BMW	440i xDrive	Base