The Cusco Brake Cylinder Stopper (B.C.S.) for the 02-07 Subaru Impreza is a great way to increase pedal feel while eliminating the unwanted flex of the brake master cylinder during hard stopping. The Cusco B.C.S. is powder coated in signature Cusco blue and bolts on to pre-existing holes. Install only takes a few minutes using normal hand tools. This has been specifically designed for left hand drive Subarus.