The XP12 compound has a excellent initial bite, torque and fade resistance over and above the XP10 compound. XP12 has a temperature range of 250ï¿½F to 1850ï¿½F+ (121ï¿½C to 1010ï¿½C+). The XP12 maintains the excellent Carbotech release and modulation that has made Carbotech compounds so successful. The XP12 is more rotor aggressive than the Xp12 but compared to the competition it is still very rotor friendly. NOT for street use.