The R10 has a much strong initial bite and higher coefficient of friction than R8.  R10 still maintains our smooth release, excellent modulation and rotor friendliness that have been engineered into all previous G-LOC™ compounds.   The R10 compound disc/rotor friendliness will lead the industry. R10™ broad temperature range and fade resistance is in excess of 1475°F (186°F /85°C – 801°C). G-LOC™ does NOT recommended R10 for daily use on the street due to elevated levels of dust and noise.