PERRIN Master Cylinder Brace for 15-21 WRX/STi COP Diesel or E85

Diesel or E85

pre filter

the drivetrain is constantly moving back and forth

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PERRIN Master Cylinder Brace for 15-21 WRX/STi COP Diesel or E85The PERRIN Master Cylinder Brace prevents unwanted movement of the master cylinder, allowing for increased brake pedal stiffness. Fits these Applications: 2015 2021 Subaru WRX 2015 2021 Subaru STi REDUCE FLEX Your brake pedal is connected to the thin sheet metal firewall which flexes as you apply the brakes. The firewall is not stiff enough to deal with the constant and repeated forces while applying the brakes. The PERRIN Master Cylinder Brace