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The SuperPro alloy front lower control arm kit with positive caster for 2015–2021 Subaru WRX and WRX STI delivers a bolt-on upgrade with pre-installed SuperPro bushings forward and a caster-offset DuroBall bushing at the rear. The kit adds caster and anti-lift geometry to improve tire contact, grip and traction during acceleration, cornering and braking, and includes OEM-style ball joint bosses for easier installation.
SuperPro 2015 Subaru WRX Limited Front Lower Alloy Control Arm Kit (+Caster)
