# Dinan 21-26 BMW M3 Carbon Rear Diffuser

Rather than replace the full diffuser and have potential fitment challenges with various exhaust options Dinan has opted to retain the factory gloss black lower portion of the diffuser and only replace the upper diffuser surround with a carbon fiber accent piece. This solution not only guarantees the carbon cosmetics will always play well with any personalization of the exhaust that is adopted but also offers an economical option compared to much pricier alternatives. Together with the Dinan Rear Side Splitters, the combination creates a "full" rear diffuser that is restrained but elevated and creates a nuanced OEM+ option for the marketplace.

-   2x2 gloss twill dry carbon fiber (pre-preg) manufactured to be impact resistant, durable and strong
-   Utilizes factory mounting tabs for an easy installation with a clean fit and finish
-   Pair together with the Dinan Rear Side Splitters to complete the full rear look
-   Clear coated for maximum UV protection and fade resistance

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:** 1370.79 CAD
- **Vendor:** Dinan
- **Type:** Diffusers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1370.79 CAD | In stock |

## Images

- Photo - Primary
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package
- Photo - out of package

---

> Source: [Standard Auto Part](https://www.standardautopart.com/products/dinan-21-26-bmw-m3-carbon-rear-diffuser)
> Updated: 2026-07-05