Finish Line DOT 5.1 Brake FluidThis high-quality model meets 5.1 specifications and it's an approved replacement fluid for braking systems requiring DOT 3, 4 and 5.1. Additionally, it features a super-low viscosity for superior lever response, pad retraction and consistent performance. Finally, it prevents foaming and overheating through a full range of braking operating temperatures. Features: Specifically engineered for use in bicycle hydraulic disc brakes Provides maximum fluid life and braking performance, even at low temperatures Prevents foaming and overheating Meets DOT 3, 4, and 5.1 specificationsBuy Finish Line Workshop from Chain Reaction Cycles, the World's Largest Online Bike Store.