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Subaru WRX STi Wing Stabilizers [by PERRIN] - YouTube
Perrin Wing Stabilizers "Stiffy" Install / 2015-2019 Subaru WRX and STI - YouTube
Perrin Wing Stabilizers "Stiffy" Install / 2015-2019 Subaru WRX and STI - YouTube
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How to install wing stabilizers on a Subaru STI - YouTube
Perrin Wing Spoiler Stabilizer Stiffi For 2015-2019 STi Sedan 4-Door | eBay