APR Carbon Fiber Rear Bumper Skirts for 2015-2021 WRX (FS-815028) Stoptech This is called the ‘thermal

This is called the ‘thermal flywheel effect’ and will keep the rapidly fluctuating temperatures inside your engine bay from affecting intake temps as drastically

Width 14 1/4"

38" diameter

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APR Carbon Fiber Rear Bumper Skirts for 2015-2021 WRX (FS-815028) Stoptech This is called the ‘thermalAPR carbon fiber rear bumper skirts for 2015 2021 Subaru WRX help reduce lift at high speeds by preventing air from rolling underneath the car. This helps to stabilize the car during high speed cornering and increase traction for faster lap times. Vehicle Fitment: 2015 2021 Subaru WRX (VA FA20) 2015 2021 Subaru STi (EJ25) Features: Carbon Fiber Construction All APR Rear Bumper Skirts are made in carbon fiber composites for lightweight and high