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: Aprilia RS50 2006-2010 Italjet Dragster 50 LC 1999-2008 KTM 60 SX 1998-1999 Peugeot Ludix Elegance 2005-2008 Ludix Snake 2004-2008 Speedfight 1997-1999 Speedfight 2 1999-2002 2006 Sherco Trials ST1.25 1999-2002 2006