If your Corvette's brakes are not as powerful as they once were and you have checked on or replaced your pads, calipers, rotors, shoes, or drums, you may need a new 1963-1964 C2 Brake Master Cylinder. This Cast iron Drum / Drum, single bail, 1" bore master cylinder is a direct replacement part for your C2 and is ready to bolt on. Deep bore with a shallow bore adapter included.