BMW 4 Series G22 G23 430i / M440i M Sport Carbon Fiber Rear Diffuser (2020–2021)

Carbon Fiber Rear Diffuser Styling for BMW G22/G23 430i & M440i M Sport Models

Designed for selected BMW 4 Series G22 and G23 430i / M440i M Sport (2020–2021) models, this carbon fiber rear diffuser replaces the factory lower rear bumper section with a more aggressive performance-inspired design. The vehicle-specific shape follows the original rear bumper lines and adds a sharper OEM+ look to the rear end while enhancing the overall styling of the G22/G23 platform.

Made from dry carbon fiber with a 3x3 twill carbon fiber weave, UV-protected clear coating and a shiny gloss carbon finish, this rear diffuser delivers a lightweight exterior upgrade with a premium visible carbon appearance. The gloss carbon finish and defined diffuser fins create a more purposeful rear bumper look while matching other carbon fiber exterior components.

The direct replacement design is shaped for the factory M Sport rear bumper for clean fitment and a more integrated finish than universal add-on pieces. Professional installation is recommended for correct alignment, secure mounting and long-term durability.

Key Features:

• Dry carbon fiber construction
• 3x3 twill carbon fiber weave
• UV-protected clear coating
• Shiny gloss carbon finish
• Rear bumper diffuser design
• Designed for BMW G22 / G23 M Sport models
• Compatible with 430i and M440i fitment
• Vehicle-specific rear bumper shape
• Aggressive OEM+ rear styling
• Lightweight exterior upgrade
• Direct replacement installation
• Professional installation recommended

Package Includes:

• 1 × Dry Carbon Fiber Rear Diffuser

Compatible Models: