The renthal sprocket for gas gas ec250f 2013-2015 front 13t is part of the latest collection from renthal.Features:features a specially developed nickel-chrome-molybdenum steel which is case hardened and core refined to give the ultimate combination of strength and hardness.Specifications: chain size: 520 color finish: natural material: chromoly steel mounting position: front product name: sprocket research value: level 2 riding style: off-road tooth count: 13 type: countershaft units: each to fit: gas gas ec 250 f 2013 all models gas gas ec 250 f 2014 cami all models gas gas ec 250 f 2014 racing all models gas gas ec 250 f 2015 racing all models gas gas ec 300 f 2013 all models gas gas ec 300 f 2014 racing all models gas gas ec 300 f 2015 racing all models yamaha wr 250 f 2001 american models yamaha wr 250 f 2001 european models yamaha wr 250 f 2002 american models yamaha wr 250 f 2002 european models yamaha wr 250 f 2003 american models yamaha wr 250 f 2003 european models yamaha wr 250 f 2004 american models yamaha wr 250 f 2004 european models yamaha wr 250 f 2005 american models yamaha wr 250 f 2005 european models yamaha wr 250 f 2006 american models yamaha wr 250 f 2006 european models yamaha wr 250 f 2007 american models yamaha wr 250 f 2007 european models yamaha wr 250 f 2008 american models yamaha wr 250 f 2008 european models yamaha wr 250 f 2009 american models yamaha wr 250 f 2009 european models yamaha wr 250 f 2010 american models yamaha wr 250 f 2010 euro...