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The COBB alloy front lower control arm with offset caster for 2015–2021 Subaru WRX and STI (including 2018 Type RA) is a complete replacement designed to alter caster for alignment tuning while restoring lower arm function. Supplied as a full assembly for direct installation, it helps technicians or enthusiasts correct geometry after modifications or suspension work without reconstructing the entire control arm.
Cobb 15-21 Subaru WRX & STI/2018 Type RA Alloy Front Lower Control Arm (Complete) Offset Caster
