3DDesign Carbon Rear Diffuser – BMW M5 G90 / G99

3DDesign Carbon Rear Diffuser for the BMW M5 G90 / G99 is engineered to enhance rear-end aerodynamics while reinforcing the performance-focused design language of the M5.

Manufactured from high-grade carbon fiber, this rear diffuser optimizes airflow under the vehicle, contributing to improved high-speed stability and a more aggressive, motorsport-inspired rear profile.

Product Highlights

• Vehicle-specific design for BMW M5 G90 (Sedan) and G99 (Touring)
• Material: Pre-preg carbon fiber
• Improves rear airflow management
• Enhances high-speed stability
• OEM-level fitment with factory mounting points

Fitment

• BMW M5 G90 – Sedan
• BMW M5 G99 – Touring

BaanVelgen Recommendation

• OEM+ build – Combine with stock exhaust and front aero
• Sport street – Pair with 3DDesign front lip and side skirts
• Full aero setup – Complete 3DDesign carbon exterior package

Included Components

• 3DDesign carbon rear diffuser
• Required mounting hardware
• 3DDesign installation documentation

Technical Specifications

Installation & Compatibility

This rear diffuser is designed for direct installation on the BMW M5 G90 and G99 using factory mounting points. Professional installation is recommended to ensure correct alignment and surface preparation.

Engineering Perspective

The 3DDesign rear diffuser focuses on functional aerodynamic refinement by managing turbulent airflow exiting the underbody. This contributes to improved rear-end stability and a more planted driving feel at higher speeds.

Designed to integrate seamlessly with the factory bumper geometry, this diffuser delivers motorsport-inspired performance without disrupting OEM design integrity.

Ordering Information

• Worldwide shipping from our Rotterdam warehouse
• Built to order – estimated lead time 4–6 weeks
• 100% authentic 3DDesign product with manufacturer warranty

Media

View installed examples and full BMW M5 builds in our BaanVelgen Builds.