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: Yamaha FZ750 1986 FZR250R 1989-1993 FZR400 RR 1987-1992 FZR400RR EXUP (3TJ IMPORT) 1993-1995 FZS600 Fazer 1998-2004 FZX250 ZEAL 1998-2000 RZ350R 1985-1992 RZ500 1984-1986 SRX600 1985-1990 TZR250 3XV 1991 TZR250T 2MA 1987-1988 TZR250W 3MA 1989-1990 XJ600S DIVERSION 1992-2003 XJ600S SECA II 1992-1996 XJR400 1993-1995