Fits:MakeModelYearYamahaDT2501975-1979YamahaDT4001975-1978YamahaXT5001976-1981Product FeaturesThe friction material is composed of a mixture of synthetic composites and metallic fibers. DOT rating of FF; 0.44 – 0.45 coefficient of friction at both 250F and 600F; A minimal 0 to 22 percent fade possible at 600F. Provides great stopping power and long life with low dust and brake disk wear at an economical price.