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Ferro Carbon offers lower rear rates and higher torque values than other competitive materials
Improves the overall aerodynamics by increasing the downforce under higher speeds
The Foiler Wind Diffusers will reduce the wind turbulence in the cabin of the A90 Toyota Supra
There was a front caliper design change mid production year
08-21 WRX / STI GrimmSpeed Dry-Con Performance Panel Air Filter PDM_trunks Ferro Carbon offers lower rearGrimmSpeed Dry Con Performance Panel Air Filter, 2008 2021 Subaru WRX STI The GrimmSpeed Dry Con Performance Panel Air Filter for the 2008 2021 Subaru WRX STI is a drop in replacement for the factory airbox filter element. It improves airflow over the stock paper element while keeping the factory sealed airbox intact, no intake modification, no MAF recalibration, no installation work beyond swapping the filter. DETAILS Drop in OEM airbox replacement,