BMW M4 F82 F83 DE Style Carbon Fiber Rear Diffuser with Rear Caps 2014-2020

Upgrade the rear profile of your 2014-2020 BMW M4 F82 or F83 with this DE Style Carbon Fiber Rear Diffuser with Rear Caps. Designed to enhance the lower rear bumper area, this package adds sharper carbon fiber detail while complementing the aggressive factory body lines of the M4 platform.

This package includes one rear diffuser and rear bumper caps engineered for BMW M4 F82 and F83 models. The DE style design gives the rear end a more defined and performance-inspired appearance, adding visual depth and premium carbon fiber accenting to the lower bumper section.

Available in FRP, CFRP, and FGCF material options, this rear diffuser and cap package offers flexible construction choices depending on the desired finish and styling preference. Professional installation is recommended to ensure proper alignment, secure mounting, and a clean finished fit.

Product Specifications

Key Features

• Designed for 2014-2020 BMW M4 F82 and F83 models
• DE style rear diffuser and rear cap package for a sharper rear-end profile
• Includes one rear diffuser and rear bumper caps
• Adds premium carbon fiber detail to the lower rear bumper area
• Available in FRP, CFRP, and FGCF material options
• Enhances the rear exterior with a cleaner performance-inspired appearance
• Complements the aggressive factory proportions of the BMW M4 platform

Configuration Options

• FRP: Fiberglass reinforced plastic option for a paint-ready performance styling configuration
• CFRP: Carbon fiber reinforced polymer option for a premium carbon-style exterior finish
• FGCF: Fiberglass carbon fiber option for balanced construction and carbon fiber appearance

Package Includes

• One rear diffuser
• One rear bumper caps

Note: Professional installation is recommended for best fitment, alignment, and secure mounting. Made-to-order material options may require additional production time before shipping.

Installation

• Test fit the rear diffuser and rear caps before final installation
• Clean and prepare the lower rear bumper mounting surfaces before securing
• Align each component carefully with the factory rear bumper profile
• Confirm the diffuser and rear caps sit evenly before final mounting
• Professional installation is recommended for proper fitment and long-term durability

Fitment

• 2014-2020 BMW M4 F82
• 2014-2020 BMW M4 F83

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.