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: Buell M2 CYCLONE LOW 2001 M2 Cyclone 1998-2002 S1 Lightning 1994-2001 S1 WHITE LIGHTNING 2002 S3 Thunderbolt 1997-2002 X1 LIGHTNING 1998 X1 Lightning 1999-2002 Kawasaki ZX7RR 1996-1999 MV Agusta Brutale 750 2003-2008 Brutale 910 S 2005-2008 F4 750 1999-2003