AP Racing Radi-Cal R4 Brake Fluid
Dry Boiling Point 340C / 644F
Wet Boiling Point 204C / 399F
R4 has been designed to perform better than any other product at the extremes of heavy-duty braking performance and is currently the fluid of choice at elite levels of motorsport including several Indy-Car teams.
*R4 has the highest dry boiling point of any racing brake fluid on the market.