What and why vented rotors?
Braking converts motion into heat. Heat needs to be dissipated. The faster you can dissipate heat the better you can stop, and less fade. Vented rotors essentially have two parallel “discs” with an airspace in between to increase cooling. Many of the Kesley-Hayes non-vented front rotors can be replaced with vented ones and thinner pads without replacing calipers for a slight gain in braking power.
