The RP2 compound is engineered for endurance racing based on the highly successful XP series. RP2 has a strong initial bite, a little less modulation than the XP12, but still maintains the rotor friendliness. RP2 has a great fade resistance with a temperature range of 250ï¿½F to 1450ï¿½F+ (121ï¿½C to 787ï¿½C). RP2 is as rotor friendly as the XP series. NOT for street use.