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 RD250LC 1983 RZ250 1983-1987 RZ350 YPVS 1983-1984 SR250SE 2001-2004 XJ650 1983-1986 XJ650 TURBO 1982-1983 XS400 1982-1987 XS400 (DOHC) 1983 XT600 1983-1989 XT600Z TENERE 1983-1985 XV250 VIRAGO 1988-1994 XZ550 1982-1983