AP Racing Radi-CAL R3 Racing Brake Fluid

AP Racing Radi-CAL R3 steps up to a 325°C dry boiling point — the popular mid-tier choice for serious track days and club racing where R2 starts to run short of margin. It holds a firm pedal deeper into repeated heavy braking while staying a straightforward DOT 4 fill.

Like all racing fluids its 195°C wet boiling point falls as it absorbs moisture, so bleed regularly and flush each season. DOT 4 compatible and mixes with conventional DOT 3/4 fluid for bleeding.