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

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. Carbon Fiber - G80/G82/G83

• 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

Upgrade the rear styling of your BMW with the Dinan D980-0049 Carbon Fiber Rear Diffuser Surround, designed for 2021–2027 BMW M3 and M4 models, including the G80, G82, and G83 chassis. Instead of replacing the complete diffuser, this upper surround retains the factory gloss black lower section, helping preserve compatibility with a wide range of exhaust configurations and aftermarket personalization. The result is a clean, restrained OEM+ appearance with distinctive carbon fiber detailing.
Manufactured from impact-resistant, durable, and strong 2x2 gloss twill dry carbon fiber, the Dinan rear diffuser surround is engineered for a precise fit and refined finish. It uses the vehicle’s factory mounting tabs to simplify installation while maintaining a clean appearance. The included clear coat provides enhanced UV protection and helps resist fading, preserving the carbon fiber’s finish over time. This component is sold as a single diffuser surround and is intended to complement the factory lower diffuser section.
Pair the Dinan D980-0049 with Dinan Rear Side Splitters to create a more complete rear diffuser treatment. The combination adds visual depth and a cohesive carbon fiber accent without requiring a full diffuser replacement. This Dinan upgrade is a practical choice for BMW enthusiasts seeking premium exterior styling, factory-compatible installation points, and a polished appearance that works with different exhaust setups. Fits select 2021–2023 BMW M3 and M4 applications and is designed for G80, G82, and G83 vehicles.

Features:

• 2x2 gloss twill dry carbon fiber construction for a durable, impact-resistant, and lightweight finish

• Designed to retain the factory gloss black lower diffuser section

• Uses factory mounting tabs for straightforward installation and a clean fit

• Clear coated for enhanced UV protection and fade resistance

• Pairs with Dinan Rear Side Splitters to complete the rear diffuser appearance

• Designed for 2021–2027 BMW M3 and M4 G80, G82, and G83 applications

Fitment:
BMW M3 Base 2021
BMW M3 Base 2022
BMW M3 Base 2023
BMW M3 Base 2024
BMW M3 Base 2025
BMW M3 Base 2026
BMW M3 Competition 2021
BMW M3 Competition 2022
BMW M3 Competition 2023
BMW M3 Competition 2024
BMW M3 Competition 2025
BMW M3 Competition 2026
BMW M3 Competition xDrive 2022
BMW M3 Competition xDrive 2023
BMW M3 Competition xDrive 2024
BMW M3 Competition xDrive 2025
BMW M3 Competition xDrive 2026
BMW M4 Base 2021
BMW M4 Base 2022
BMW M4 Base 2023
BMW M4 Base 2024
BMW M4 Base 2025
BMW M4 Base 2026
BMW M4 Competition 2021
BMW M4 Competition 2022
BMW M4 Competition 2023
BMW M4 Competition 2024
BMW M4 Competition 2025
BMW M4 Competition 2026
BMW M4 Competition xDrive 2022
BMW M4 Competition xDrive 2023
BMW M4 Competition xDrive 2024
BMW M4 Competition xDrive 2025
BMW M4 Competition xDrive 2026
BMW M4 CSL 2023