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 520 x 98 non o-ring chain fits the following models 2009 Yamaha YFZ450R 2010 Yamaha YFZ450R 2011 Yamaha YFZ450R 2012 Yamaha YFZ450R 2013 Yamaha YFZ450R 2014 Yamaha YFZ450R 2015 Yamaha YFZ450R 2016 Yamaha YFZ450R 2017 Yamaha YFZ450R Included is a 520 x 98 non o-ring chain gold 1 master link clip style Tensile strength of 8200 pounds Factory Spec brand This chain is the appropriate length for stock gearing, swingarms, etc.