# Dinan 16-18 BMW 340i Stainless Steel 3.25in High Flow Mid-Pipe

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.

-   Stock hydro-formed 80mm piping is replaced by 3.25" (82.6mm) mandrel-bent piping for free flow.
-   Deletes both resonators between the catalyst and the rear muffler.
-   Weight savings over stock: Stock = 24 lbs; Dinan = 21 lbs.
-   100% 304 stainless steel construction.
-   Includes mounting hardware.
-   Bolt-on installation.

This Part Fits:

Year

Make

Model

Submodel

2016-2018

BMW

340i

Base

2016-2018

BMW

340i xDrive

Base

2017-2020

BMW

440i

Base

2017-2020

BMW

440i xDrive

Base

## Details

- **Price:** 995.48 CAD
- **Vendor:** Dinan
- **Type:** Connecting Pipes

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 995.48 CAD | In stock |

## Images

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- Photo - out of package
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> Source: [Standard Auto Part](https://www.standardautopart.com/products/dinan-16-18-bmw-340i-stainless-steel-3-25in-high-flow-mid-pipe)
> Updated: 2026-07-05