VERUS ENGINEERING A0069A Rear Diffuser Kit for FORD Focus RS / ST (MK3)

Description VERUS ENGINEERING A0069A Rear Diffuser Kit for FORD Focus RS / ST (MK3)

The VERUS ENGINEERING A0069A rear diffuser is a bolt-on aerodynamic upgrade developed for the Ford Focus RS / ST (MK3) to reduce rear-end lift and help lower drag. Hatchback body shapes commonly create a low-pressure wake behind the vehicle; this diffuser is designed to improve underbody airflow and manage the airflow leaving the rear of the car to increase downforce and reduce the “dead water” region that contributes to drag.

Designed using analysis software and in-house scan data, the diffuser is shaped for near-OEM fitment and a clean, integrated appearance. The strake layout follows the factory body lines for a subtle, functional design intended for both track use and highway stability.

• Reduces drag by improving airflow management behind the vehicle
• Reduces lift and increases rear downforce
• Improves overall aerodynamic efficiency (increased L/D)
• Helps increase tire grip at speed through added rear stability
• Simple, non-invasive bolt-on installation

Kit Contents:

• Rear diffuser
• Bracket × 6
• Hardware Kit (includes all hardware needed for installation)
• The rear diffuser is part of the Ventus 1 package for the Focus RS. The diffuser and front splitter were developed together to improve downforce while maintaining the aerodynamic balance of the factory RS. Side splitters complement the system by helping to reduce airflow spillage from under the vehicle, supporting overall efficiency.