Do not send us an email or note specifying what length chain you need. You must ORDER the correct length. BUYER must check chain length needed before ordering. Any info provided by seller regarding stock length is to the best of our knowledge, but seller is NOT responsible for chain that is ordered incorrectly. Any return for different length chain will be at buyer's expense, including shipping both ways. PLEASE check BEFORE ordering. This brand new o-ring chain sprocket kit fits the following models 1998 Polaris Scrambler 500 4x4 1999 Polaris Scrambler 500 4x4 2000 Polaris Scrambler 500 4x4 2001 Polaris Scrambler 500 4x4 2002 Polaris Scrambler 500 4x4 2003 Polaris Scrambler 500 4x4 2004 Polaris Scrambler 500 4x4 2005 Polaris Scrambler 500 4x4 2006 Polaris Scrambler 500 4x4 2007 Polaris Scrambler 500 4x4 2008 Polaris Scrambler 500 4x4 2009 Polaris Scrambler 500 4x4 2010 Polaris Scrambler 500 4x4 2011 Polaris Scrambler 500 4x4 2012 Polaris Scrambler 500 4x4 Included is 1 520 x 76 yellow, o-ring chain 1 Master link clip style 1 13 tooth front sprocket 1 36 tooth rear sprocket Tensile strength of 8200 pounds Factory Spec brand Stock gearing for this model is 13/36 with a 520x76 chain Factory Spec brand sprockets are made of hardened steel and built to last O-ring style means it will last longer with less maintenance than conventional chains