This lightweight, high volume aluminum master cylinder provides reliable stopping power for drag race cars, late model stock cars, and off-road vehicles. It features 1 7/16 in. of piston travel for greater fluid volume with less pedal pumping. A large plastic 8.2 ounce reservoir with internal baffling prevents fluid aeration and assures adequate volume for the larger stroke. Plus, the die-cast reservoir dissipates heat better to keep operating temperatures down. It utilizes standard OEM internal components for dependable performance at an affordable price.