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The Perrin wing stabilizer for 2015–2021 Subaru WRX STI is an exterior stabilizing component intended to reduce wing vibration and improve high-speed stability. It’s a vehicle-specific accessory that mounts to the factory wing and provides a firmer, more planted feel at speed while preserving the rear aero styling. The stabilizer is a straightforward add-on for drivers seeking a quieter, more stable wing on track or road runs.
PERRIN 15-21 Subaru STI Wing Stabilizer - Black
