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Dinan 21-27 BMW M3/M4 (G80/G82/G83) Carbon Fiber Rear Diffuser Surround

$949.95
$949.95 $1,068.95
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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
Dinan 21-27 BMW M3/M4 (G80/G82/G83) Carbon Fiber Rear Diffuser Surround

$949.95

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    Checkout was quick and straightforward. My order confirmation came through instantly, and everything arrived exactly as expected.

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    Portland, Oregon

  • Great value

    Really pleased with the quality for the price. The product felt premium, worked perfectly out of the box, and was well packaged.

    Jamie Carter
    Manchester, England

Can I return a part after it has been installed?

Generally, installed or used performance parts cannot be returned. We strongly recommend verifying vehicle fitment and inspecting the product before installation.

Can I cancel my order after it has been placed?

We begin processing orders as quickly as possible. If you need to cancel, contact us immediately. Once an order has entered fulfillment, been submitted to a supplier, or shipped, cancellation may no longer be possible.

Will this part fit my vehicle?

Fitment varies by year, make, model, trim, engine, and drivetrain. Use our vehicle fitment information to confirm compatibility. If you're unsure, contact us with your VIN and we'll help verify fitment before you order.

How do I know if this is the right upgrade for my build?

Not every upgrade makes sense for every vehicle or build. Tell us your vehicle, current modifications, and performance goals, and we'll help determine whether this product is a good fit.

Are the products you sell authentic?

Yes. We source products through established manufacturers and authorized distribution channels. We do not sell counterfeit or imitation performance parts.

Is professional installation recommended?

For most performance components, yes. Proper installation is critical for fitment, reliability, and performance. Some products may also require specialized tools, programming, tuning, or additional supporting modifications.