- Porterfield R4S Pads are a great choice for spirited driving, autocross use, and light track use. They are a low noise and low dust performance pad with excellent wear characteristics.
- Porterfield R4 Pads are are full race pad.
- Raybestos ST43 Pads are a great track pad with extremely high temperature ratings (1400 degrees F), high friction coefficient, and excellent wear. These pads can be used on the street, but will make more noise and more dust then the R4S pads.