Brake Cooling
A disc that gets too hot stops braking effectively: the fluid approaches its boiling point, the pedal sinks, the pads exceed their temperature range and glaze. No pad or fluid can make up for inadequate cooling - the only lasting solution is to bring fresh air to the disc.
Three parts, one airflow path
An air intake captures the airflow in the bumper or side skirt. A high-temperature duct carries it through the wheel arch. A scoop directs it toward the center of the disc, where it passes through the cooling vanes. You need all three: a duct blowing randomly into the wheel arch is useless.
What diameter?
Ø63 mm is the standard for a prepared passenger car, while Ø75 to 100 mm is suitable for endurance use or a heavy car. Make the duct slightly longer than necessary: a bend radius that is too tight will crush and constrict it.
