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The Torque Solution rear differential inserts are replacement bushings for Subaru WRX and STi models from 2008 onward. They stabilize the rear differential, helping reduce unwanted movement under load and improve responsiveness. These inserts are intended to restore a firmer drivetrain feel and protect mounting points compared with deteriorated stock bushings.
Torque Solution Rear Differential Inserts: Subaru WRX / STi 2008+
