# Dinan 21-26 BMW M3 Stainless Steel 3in High Flow Middle Exhaust

This middle exhaust itself removes the hydro-formed factory center section from the secondary catalysts back to the axle back, including both resonators, and replaces it with larger 3-inch T304 stainless steel tubing for freer flowing capabilities. In place of the forward factory resonator, Dinan incorporates a beautifully crafted X-pipe made from mandrel-bent tubing for minimum restriction, unlike stamped X-pipes which are commonplace in the market. This hand-made 'X' is not only the focal point of the system in terms of aesthetics but also the star when it comes to the effects on the sound. Promoting even flow to both banks of tips, the 'X' removes unwanted nuances in sound caused by uneven exhaust flow that is present in the stock system. Along with the inherent benefit of increased volume by removal of the resonators, the Dinan X-Pipe for the G8x M3/M4 produces a louder, smoother, and fuller exhaust note that will deliver smiles time and time again.

-   Deletes resonators between the secondary catalysts and rear muffler for increased volume
-   5-pounds lighter than the stock mid-section (Stock: 22-pounds vs. Dinan: 17-pounds)
-   Includes X-pipe crossover made from mandrel bent tubing for minimum restriction
-   76mm (3-inch) tubing replaces stock 70mm (2.75-inch) tubing for free flow
-   Factory-like fitment with included mounting hardware
-   100% 304 stainless steel construction
-   Smoother, louder and sportier sound

This Part Fits:

Year

Make

Model

Submodel

2021-2026

BMW

M3

Base

2021-2026

BMW

M3

Competition

2022-2026

BMW

M3

Competition xDrive

2021-2026

BMW

M4

Base

2021-2026

BMW

M4

Competition

2022-2026

BMW

M4

Competition xDrive

2023

BMW

M4

CSL

## Details

- **Price:** 1312.13 CAD
- **Vendor:** Dinan
- **Type:** Connecting Pipes

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1312.13 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-21-26-bmw-m3-stainless-steel-3in-high-flow-middle-exhaust)
> Updated: 2026-07-05