Kawasaki 1988-12 Ex250 Ninja 250R / 13-14 Ex300A Ninja 300 O Ring Chain 520-106L O Ring Chain Average tensile strength of 7600 lbs Fits 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Kawasaki EX250 Ninja 250R / 2013 2014 Kawasaki EX300A Ninja 300