* Has a toothed ring around the outer edge of the rotor
* This ring is used by the ABS sensor to monitor wheel speed
* The ABS system uses this information to prevent the wheels from locking up during braking
Non-ABS Front Disk Rotor
* Does not have a toothed ring around the outer edge
* Does not provide any information to the ABS system
* The ABS system cannot prevent the wheels from locking up during braking with a non-ABS front disk rotor
Comparison
| Feature | ABS Front Disk Rotor | Non-ABS Front Disk Rotor |
|---|---|---|
| Toothed ring | Yes | No |
| ABS sensor | Yes | No |
| ABS system | Works with ABS system | Does not work with ABS system |
| Wheel lock-up prevention | Yes | No |
