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The PERRIN 26mm front sway bar for 2015–2021 Subaru WRX STI is a direct-fit upgrade intended to reduce front body roll and sharpen turn-in for these model years. It replaces the factory bar with a thicker 26mm diameter to increase front roll stiffness and improve vehicle balance under cornering. Choose this bar when matching the specified WRX STI fitment to retain correct mounting and suspension geometry.
PERRIN 15-21 Subaru WRX STI Front Sway Bar - 26mm
