Torque Solution Rear Differential BraceTorque Solution Rear Differential Brace Applications: Subaru WRX 2002 2007 STI 2004 2007 Torque Solution Rear Differential Brace is a must have for your high horsepower or big turbo Subaru. Our boxed steel brace is stronger than the thin OEM steel brace and includes 75A Durometer Urethane bushings to ensure there is no differential movement. Less drivetrain movement means more power to ground. This will benefit all types of racers whether you are on a