The K5 sintered compound is optimal for off-road dirt bikes and ATV. It is recommended for riders who demand great off-road stopping power and brake pad durability when riding on tough off-road terrain. Fits: CF Moto X5 Terralander 500 2011-2016 X6 Terralander 2011-2012 X6 Terralander EFI 2013-2014 Polaris 300 2x4 1994-1995 300 4X4 1994 350L 2x4 1993 350L 4x4 1993 400L 2x4 1994-1995 400L 4x4 1994 BIG BOSS 250 4x6 1989-1992 BIG BOSS 250 6x6 1991-1993 BIG BOSS 300 6x6 1994 BIG BOSS 350L 6x6 1993 BIG BOSS 400L 6x6 1994-1997 BIG BOSS 500 6x6 1998-1999 MAGNUM 425 2x4 1995 MOST EARLY MODELS 1991-2000 Magnum 425 2x4 1996-1998 Magnum 425 4x4 1995-1998 Magnum 425 6x6 1996-1997 SCRAMBLER 400 4x4 1995-1997 SCRAMBLER 500 4x4 1997 SPORT 400 1994-1999 SPORTSMAN 350 4x4 1993 SPORTSMAN 400 4x4 1994-1997 SPORTSMAN 500 4x4 1996-1998 2000 SPORTSMAN 500 4x4 (after 9/98) 1999 SPORTSMAN 500 4x4 (before 9/98) 1999 TRAIL BLAZER 250 1990-1998 TRAIL BOSS 250 (2WD) 1996-2001 TRAIL BOSS 250 2x4 1985-1995 TRAIL BOSS 250 4x4 1991-1993 TRAIL BOSS 350L 2x4 1990-1992 XPLORER 300 4x4 1996-1999 XPLORER 400L 4x4 1995-1999 XPLORER 500 1997 XPRESS 300 2x4 1996-1999 XPRESS 400L 2x4 1996-1997