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: Honda NH50 LEAD 1986-1993 NH80 LEAD 1986-1989 SYM 100 MIO 2013-2016 50 MIO 2010-2017 Fiddle 50/DD 2004 MIO 50 (4 stroke) 2006