Dinan
Dinan 21-27 BMW M3/M4 (G80/G82/G83) Carbon Fiber Rear Diffuser Surround
Why this price?
$949.95 is MSRP, the lowest price Dinan lets us list it at. Additionally, Pro members get $66.50 back on this part.
$949.95 − $66.50 = $883.45
Not sure it fits? Read our tips.
Fitment tips
Fitment can come down to more than year, make and model. Sometimes the sub-model decides, so start with the fitment table below.
- Drive type. If your car is all-wheel drive, make sure the part is for all-wheel drive, not rear-wheel drive.
- Engine size. For engine parts, make sure the engine size on the product matches your engine.
- Transmission. Manual and automatic cars often take different parts.
- Body style. Sedan or hatch, two-door or four-door, cab and bed length on trucks.
Manufacturer data can sometimes have imperfections. Still not sure? We are happy to help.
Send us a message and we will confirm the fit.
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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.
Installation Instructions- 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 |
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