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Whiteline differential insert bushings for 2008+ Subaru WRX hatch and 2008–2009 STI are designed to fit within the original cradle bushing voids to maintain pinion angles and improve power transfer. The inserts work with factory bushings rather than replacing them, offering improved shift feel and reduced initial torque loss. Supplied with installation guidance and corrosion-resistant finishes for long life.
Whiteline 08-14 Subaru WRX Hatch / 08-09 Subaru STI Rear Diff Mount Inserts Positive Power Kit
