BMW G82 G83 M4 3D Style Carbon Fiber Replacement 3PCS Rear Diffuser Apron 2021-Up

The BMW G82 G83 M4 | 3D Style Carbon Fiber Replacement 3Pcs Rear Diffuser Apron is designed for owners who want a clean, aggressive upgrade that matches the factory lines of the M4 while giving the rear end a sharper and more dynamic look. This kit fits all 2021-present BMW G82 and G83 M4 models and replaces the original diffuser with a full carbon fiber assembly that brings a stronger motorsport feel to the entire rear profile. The carbon fiber weave is finished in a high gloss clear coat that stays vibrant and protected against UV exposure to keep the rear of the car looking fresh through heat, sun, and daily driving.

This 3D Style diffuser is built as a complete replacement system. It comes with a center diffuser section along with left and right rear apron extensions, giving the M4 a more planted stance and better visual structure around the exhaust. The sharper fins and sculpted channels improve airflow movement while giving your BMW M4 a more serious presence on the road or track. Each piece is molded using factory specifications so the diffuser aligns with OEM mounting points for a straightforward install using your original hardware. The strength and lightweight nature of full carbon fiber construction also keep performance in mind by reducing weight compared to stock parts.

Package Included:
1 x BMW G82 G83 M4 3D Style Carbon Fiber Rear Diffuser
1 x Pair of BMW G82 G83 M4 3D Style Carbon Fiber Rear Side Apron
Hardware is not included. Re-use your original hardware for proper installation.

This 3D Style rear diffuser kit is made from full carbon fiber to give the BMW M4 a more refined performance look with real structural quality. The carbon fiber layout stays rigid under pressure, keeps weight low, and delivers that deep gloss finish that stands out day or night. The multi-piece layout includes a center diffuser paired with both rear apron extensions, creating a wider and more aggressive shape that follows the factory body lines with more depth.

The 3D design features bold aero channels, deep fins, and strong contours that sharpen the rear of the M4 and bring more definition around the exhaust housings. The upgraded apron extensions help balance the rear bumper visually while improving airflow around the lower section of the car. Fitment is straightforward because each piece is shaped to factory dimensions, allowing the diffuser to replace the original part while using the M4’s OEM mounting points. The gloss clear coat includes UV protection to keep the carbon weave from fading, yellowing, or losing its finish over time. The diffuser keeps performance in mind by offering a lighter setup than the stock rear section while enhancing the overall look and attitude of the vehicle.

Installation manual is not included. Professional installation is recommended. This diffuser is a direct replacement and reuses factory mounting hardware. All 2021-present BMW G82 and G83 M4 models are compatible.

FITMENT Fits ALL 2021-Present G82 G83 M4 Models

United States: Free shipping available to the lower 48 states across all items. Other states will incur a shipping charge.

Worldwide: Free shipping is available for Complete Headlights, Taillights, DRLs. For custom headlight retrofits, carbon fiber products, and performance products, there will be a shipping charge.  

Please note:
• For Retrofits, you are purchasing a headlight modification service.
• If you select "Shipping own headlights to BayOptiks for modification", you are required to send us your headlights.
• If you choose "Purchase new OEM headlights", we will order and modify a new OEM headlight for you.
• Once your customizations are complete, we will ship it to you!

• Complete Headlights: 3-5 business days for order processing plus shipping time.
• Custom & Pre-Built Headlights: 6-8 weeks depending on the complexity and component availability.
• New OEM and cores: 6-8 weeks plus an additional 4-8 weeks as these are special orders base on the vehicle VIN due to different versions (North American, European, etc.)
• DRLs, Taillights, Brake Pads, and Carbon Fiber Aero: 3-5 business days for order processing, plus shipping time.
• Lens Replacements: 1-3 weeks plus shipping time.

Please note, we do not have control over the time frames of our vendors, manufacturers, and delivery services as they may delay processes in regards to components and shipment.