The S3 sintered compound is optimal for street bikes, dual sport, touring, cruisers. It's recommended on applications with rather larger engines or for people who ride harder than average and want the great stopping power of a sintered brake pad. Fits: Harley Davidson FL1200 ELECTRA GLIDE 1972-1973 FLH 1200 ANNIVERSARY 1978 FLH 1200 ELECTRA GLIDE 1977-1980 FLH 1200 TOURING 1977-1978 FLH 1340 ELECTRA GLIDE 1978-1981 1983 FLHC 1340 ELECTRA GLIDE CLASSIC 1981 FLHS 1200 1977-1980 FLHTC 1340 ELECTRA GLIDE CLASSIC 1983-1985 FX 1200 1974-1980 FX 1200 SUPER GLIDE 1973-1978 FXB 1340 STURGIS 1980-1983 FXB 1340 STURGIS w/35mm Forks 1984 FXB 1340 STURGIS w/41mm Forks 1984 FXE 1200 1974-1980 FXE 1200 SUPER GLIDE 1974-1980 FXE 1340 SUPER GLIDE 1981-1984 FXE Super Glide 1984 FXEF 1200 FATBOB 1979 FXEF 1340 FATBOB 1979-1981 FXS 1200 1978-1979 FXS 1200 LOW RIDER 1977-1980 FXS 1340 LOW RIDER 1979-1982 FXWG WIDE GLIDE 1980-1983 XLCH 1000 SPORTSTER 1972-1977