2017 - 2021 McLaren 720S BKSS Style Carbon Fiber Rear Diffuser

Transform the rear profile of your McLaren 720S with this BKSS Style carbon fiber rear diffuser. Designed for the P14 chassis, this exterior upgrade creates a more aggressive, performance-inspired appearance while complementing the supercar’s sculpted factory body lines.

The pronounced BKSS Style design adds greater visual definition across the lower rear fascia and gives the vehicle a wider, more purposeful presence. Its sculpted fins and contoured surfaces enhance aerodynamic styling while pairing naturally with compatible side skirts, spoilers, and other exterior upgrades.

Constructed from lightweight carbon fiber, this rear diffuser combines premium materials with a distinctive exposed carbon finish. Designed for compatible 2017-2021 McLaren 720S models, each package includes one BKSS Style carbon fiber rear diffuser.

Product Specifications

Key Features

• BKSS Style rear diffuser designed for compatible McLaren 720S models
• Compatible with listed P14 chassis applications
• Creates a more aggressive and performance-inspired rear profile
• Adds greater visual definition across the lower rear fascia
• Sculpted fins provide a distinctive motorsport-inspired appearance
• Lightweight carbon fiber construction
• Premium exposed carbon fiber finish
• Designed to complement compatible side skirts, spoilers, and exterior components
• Integrates with the vehicle’s sculpted rear body lines
• Includes one BKSS Style carbon fiber rear diffuser

Package Includes

• One BKSS Style carbon fiber rear diffuser

Note: Confirm the vehicle’s model, P14 chassis, production year, factory rear bumper design, exhaust outlet arrangement, heat shielding, and surrounding aerodynamic components before ordering. Brackets, clips, screws, heat shielding, adhesive, and additional mounting hardware may require transfer or separate purchase unless otherwise specified.

Installation

• Designed to replace the compatible factory rear diffuser
• Professional installation is strongly recommended
• Test fit the diffuser before drilling, trimming, or completing final installation
• Remove the factory lower rear diffuser and surrounding trim carefully
• Transfer compatible factory brackets, clips, heat shielding, and hardware as required
• Use suitable automotive screws, clips, brackets, rivet nuts, or adhesive where applicable
• Additional mounting hardware or supporting brackets may be necessary
• Minor drilling, trimming, sanding, or alignment adjustment may be required
• Confirm adequate clearance around the exhaust outlets, heat shielding, and rear bumper components
• Verify secure mounting and adequate ground clearance before driving

Fitment

• 2017-2021 McLaren 720S P14

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.