Like all StopTech products, StopTech STR 660 High Performance Brake Fluid is carefully designed to give drivers an edge in the punishing world of high performance motoring. For over a decade StopTech has engineered and delivered race- and championship-winning brake components and systems for high performance street driving as well as pure racing. StopTech High Performance Brake Fluid adds a new dimension to the company's offerings. Available in STR-600 and STR-660 formulations for high performance street and racing applications respectively, the new StopTech High Performance Brake Fluid is a DOT 4 motor vehicle brake fluid, engineered to optimize brake system performance at high operating temperatures. In addition to guarding against boiling and subsequent loss of efficiency at severe racing temperatures, StopTech Brake Fluid maintains its excellent viscosity, lubricity and non-compressibility.