Manufactured by Factory Spec 36 tooth, rear steel sprocket 520 pitch This sprocket may not be the stock size for all models it fits. When changing sprocket sizing, a different length chain may be needed Sprocket color may differ from picture Compatible with Yamaha models below: 2004 Raptor 350 2004 YFZ450 2005 Raptor 350 2005 YFZ450 2006 Raptor 350 2006 Raptor 700 2006 YFZ450 2007 Raptor 350 2007 Raptor 700 2007 YFZ450 2008 Raptor 250 2008 Raptor 350 2008 Raptor 700 2008 YFZ450 2009 Raptor 250 2009 Raptor 350 2009 Raptor 700 2009 YFZ450 2009 YFZ450R 2010 Raptor 250 2010 Raptor 350 2010 Raptor 700 2010 YFZ450R 2010 YFZ450X 2011 Raptor 250 2011 Raptor 350 2011 Raptor 700 2011 YFZ450R 2011 YFZ450X 2012 Raptor 250 2012 Raptor 350 2012 Raptor 700 2012 YFZ450 2012 YFZ450R 2013 Raptor 250 2013 Raptor 350 2013 Raptor 700 2013 YFZ450 2013 YFZ450R 2014 Raptor 700 2014 YFZ450R 2015 Raptor 700 2015 YFZ450R 2016 YFZ450R 2016 Raptor 700 2017 YFZ450R 2017 Raptor 700 2018 YFZ450R 2018 Raptor 700 2019 YFZ450R 2019 Raptor 700 2020 YFZ450R 2020 Raptor 700 2021 YFZ450R 2021 Raptor 700 2022 YFZ450R 2022 Raptor 700 2023 YFZ450R 2023 Raptor 700