Wilwood detached reservoir compact clutch master cylinders are the perfect solution for club sport racers, small open wheel cars, or any other custom application where there is limited space for the master cylinder and fluid reservoir. These aluminum cylinders are designed for use with either detachable or remote fill reservoirs. They come available in four bore sizes from .625 in. to .813 in., with a full 1.4 in. of stroke to accommodate short pedal ratios, and hydraulic clutch actuation on space limited applications.