2018-2023 BMW F90 M5 CS Style Real Carbon Fiber Center Rear Bumper Diffuser

Upgrade the rear roofline styling of your BMW G30 5 Series or F90 M5 with this AC Style Carbon Fiber Rear Window Roof Spoiler, designed to add a subtle yet sporty exterior accent.

This roof spoiler enhances the vehicle’s sleek profile with a contoured design on both ends, giving the rear window area a more refined and performance-inspired appearance.

Crafted from 100% real 3K vacuumed dry carbon fiber, this spoiler is lightweight, durable, and UV-protected to help prevent fading while maintaining a premium carbon fiber finish.

Product Specifications

Key Features

• Designed for 2017-2023 BMW G30 5 Series sedan models
• Also suitable for 2018-2023 BMW F90 M5 sedan models using the G30 sedan body platform
• AC style rear window roof spoiler adds a sleek sporty accent
• Contoured end design creates a refined performance-inspired profile
• 100% real 3K vacuumed dry carbon fiber construction
• UV-protected finish helps prevent fading
• Installs using double-sided tape and adhesive promoter

Configuration Options

• AC style carbon fiber rear window roof spoiler
• Designed for 4-door sedan roofline fitment

Package Includes

• One carbon fiber rear window roof spoiler
• Double-sided tape and adhesive promoter as supplied

Note: Source fitment lists 2017-2023 BMW G30 5 Series 4 Door Sedan. BMW F90 M5 shares the G30 sedan platform styling, so it is included based on the product title and description. Professional installation is highly recommended.

Installation

• Clean and prepare the rear window roofline mounting surface
• Apply adhesive promoter as needed before installation
• Test fit and align the spoiler before removing adhesive backing
• Secure using double-sided tape
• Masking tape is recommended to hold the spoiler in place overnight for a secure bond
• Professional installation is highly recommended for best adhesion and alignment

Fitment

• 2017-2023 BMW 5 Series G30 4-Door Sedan
• 2018-2023 BMW M5 F90 4-Door Sedan

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.