Brake pedal feel can suffer when the master cylinder flexes under heavy braking loads. IAG Performance carries brake master cylinder braces for Subaru WRX, STI, Legacy GT, and Forester XT models, designed to reinforce the brake master cylinder and reduce unwanted movement during aggressive driving. A master cylinder brace can help improve pedal feel, braking consistency, and driver confidence on the street, autocross course, or track. Featuring premium options from Cusco, GrimmSpeed, Perrin Performance, and Radium Engineering.