2021-2025 BMW M4 G82/G83 BKSS Style Carbon Fiber Side Skirts

Enhance the side profile of your BMW M4 G82 or G83 with these BKSS style carbon fiber side skirts. Designed to create a lower and more aggressive appearance, these exterior upgrades add a sleek performance-inspired accent while complementing the M4’s factory body lines.

The sculpted BKSS style design extends the visual profile along the lower sides of the vehicle, creating a more dynamic and planted stance without significantly compromising ground clearance. Its streamlined contours also enhance the vehicle’s side aerodynamic presence for a cohesive street or track-inspired build.

Crafted from CFRP, FGCF, or DryCF material options, these side skirts combine lightweight construction, durable exterior performance, and premium finish quality. Designed for 2021-2025 BMW M4 G82 Coupe and G83 Convertible models, each package includes one pair of side skirts.

Product Specifications

Key Features

• BKSS style side skirts designed for the BMW M4 G82 and G83
• Designed for 2021-2025 BMW M4 Coupe and Convertible models
• Create a lower and more aggressive side profile
• Available in CFRP, FGCF, and DryCF material options
• Lightweight construction with durable exterior performance
• Enhance the vehicle’s side aerodynamic presence
• Streamlined design maintains practical ground clearance
• Complement the factory body lines of the BMW M4
• Create a cohesive transition between the front and rear styling
• Suitable for street, show, and track-inspired builds

Configuration Options

• CFRP: Carbon fiber-reinforced polymer construction offering lightweight strength and a premium woven appearance
• FGCF: Forged carbon fiber construction featuring a distinctive textured finish
• DryCF: Lightweight dry carbon fiber construction offering premium strength and refined finish quality
• Side Skirt Setup: BKSS style design enhances the lower side profile from the front to the rear wheel areas

Package Includes

• One pair of side skirts
• One left-side skirt
• One right-side skirt

Note: Professional installation is recommended. Confirm the vehicle’s chassis, body style, and factory side skirt configuration before ordering. Test fitting is recommended before drilling, applying adhesive, or completing final installation. Factory hardware or additional compatible mounting materials may be required.

Installation

• Designed for installation along the lower side body areas
• Professional installation is recommended for proper alignment and secure fitment
• Test fit both side skirts before applying mounting materials
• Clean and prepare all mounting surfaces before installation
• Factory hardware or compatible screws and adhesive may be required
• Minor drilling or adjustment may be required depending on the vehicle configuration
• Align both components evenly with the factory body lines
• Verify secure mounting and consistent alignment before driving

Fitment

• 2021-2025 BMW M4 G82 Coupe
• 2021-2025 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.