SPEED ENGINEERING 14867 Diffuser for BMW M4 (F82)

Description SPEED ENGINEERING 14867 Diffuser for BMW M4 (F82)

The SPEED ENGINEERING 14867 diffuser is designed for the BMW M4 F82. It combines motorsport-focused aerodynamics with a layout that balances low aerodynamic drag and increased downforce.

The diffuser covers as much of the rear cavity as possible to reduce turbulent airflow and support laminar airflow beneath the rear section. Its aluminium construction is lightweight and sturdy, while multiple connection points help distribute force evenly across the diffuser panel.

Original mounting points are used wherever possible, so no cutting is required. The diffuser was developed for base vehicles with coilover suspension and low ride height.

Installation Note: In rare cases, an additional hole may need to be drilled.

Fitment / Vehicle compatibility: Vehicles with a different exhaust system or modified rear bumper may require diffuser adaptation or modification.

Approval Requirement: The supplied edge protection must be fitted for approval.

Order Requirement: The vehicle chassis number must be included in the order comments so the parts certificate can be issued.

• Designed to balance aerodynamic drag and downforce
• Reduces turbulent airflow and supports laminar airflow beneath the rear section
• Lightweight and sturdy aluminium construction
• Multiple connection points support even force distribution

Specifications:

• Material: Aluminium
• Certification: Parts certificate included
• Ground Clearance Requirement: 8 cm with the diffuser installed
• Base Vehicle Exhaust System: Milltek exhaust system

Kit comes with:

• SPEED diffuser
• Various brackets
• Fixing materials
• Parts certificate
• Edge protection
• Diffuser support plates