Motul RBF660 Racing Brake Fluid is 100% synthetic brake fluid meeting DOT 4 specification.Extreme thermal resistance and stabilityVery high boiling point: 325°C / 617°F100% Synthetic Racing Fluid DOT 4Enables to keep efficient braking in wet conditionsThe Motul RBF660 Racing Brake Fluid has been specifically designed for use within an extreme temperature environment as found in competition braking system, including carbon and ceramic discs.This brake fluid is superior to DOT 5 and DOT 5.1 fluids thanks to its high dry boiling point of 325°C (617°F), which is matched by a high wet boiling point of 205°C (401°F), this reduces the risk of vapour lock and provides excellent braking performance over other fluids in wet conditions.Supplied in 500ml bottles.Technical Data Sheet