BMW M3 G80 G81 M4 G82 G83 MTN Style Dry Carbon Fiber Rear Diffuser Lip with Winglets 2021-2024

Enhance the rear styling and aerodynamic performance of your 2021-2024 BMW M3 G80/G81 or M4 G82/G83 with this MTN Style dry carbon fiber rear diffuser lip with winglets. Designed to deliver a bold motorsport-inspired appearance, this upgrade adds aggressive lower rear definition and enhances overall vehicle presence.

This rear diffuser lip is precision engineered for the G8X platform, ensuring seamless integration with the factory rear bumper. The included winglets improve airflow management and help direct air along the rear of the vehicle, contributing to improved aerodynamic efficiency and a more track-focused look.

Constructed from autoclave-cured dry carbon fiber, this diffuser lip offers exceptional strength, reduced weight, and superior weave consistency. It is ideal for enthusiasts seeking a premium carbon fiber upgrade for street, show, or performance builds.

Product Specifications

Key Features

• Designed for 2021-2024 BMW M3 G80/G81 and M4 G82/G83 models
• MTN Style design for aggressive rear-end styling
• Includes rear diffuser lip and aerodynamic winglets
• Enhances rear airflow and aerodynamic efficiency
• Improves rear bumper definition and sporty stance
• Constructed from autoclave-cured dry carbon fiber
• Lightweight with high structural strength
• Superior weave consistency and premium finish
• OEM+ fitment for seamless integration
• Ideal for street, show, and track-focused builds

Configuration Options

• Dry Carbon Fiber – Lightweight premium carbon fiber with smooth weave finish
• Forged Dry Carbon Fiber – High-end textured carbon fiber for unique appearance

Package Includes

• Rear diffuser lip
• Rear winglets (left and right)

Note: Professional installation is recommended. Ensure proper alignment and secure mounting during installation.

Installation

• Screw fixation using mounting hardware
• No major modification required
• Ensure proper alignment before securing
• Professional installation recommended

Fitment

• 2021-2024 BMW M3 G80
• 2021-2024 BMW M3 Touring G81
• 2021-2024 BMW M4 G82 Coupe
• 2021-2024 BMW M4 G83 Convertible

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.