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Thanks to a carbon-kevlar compound, the R4-S provides improved performance over the OEM pad with a minimal increase in dust and noise. Additionally the R4-S is a rotor friendly compound that will extend the service life of your brake rotors.
For extended track use take a look at the Porterfield R4 or R4-1 brake compounds. Sean's Application Notes: This is a shop favorite for our light duty cars. If you are looking for a street performance pad that will not let you down, this is the one!