Q: What does the diffuser trim extension do back there?
The diffuser trim extension lengthens the factory diffuser and adds two central strakes that guide airflow through the rear tunnel more effectively. The longer working surface manages low-pressure flow at the rear, which improves stability and smooths the transition into the wake behind the car. Paired with the efficiency spoiler, that is where much of the kit’s measured downforce and drag improvement comes from.
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