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, non o-ring chain sprocket kit will give your ATV better acceleration fits the following models 2004 2009 Yamaha YFZ450 2012 2013 Yamaha YFZ450 ***Will not fit YFZ450R or YFZ450X models*** Included is 1 520 x 98L blue, non o-ring chain chain may need to be cut to length 1 Master link clip style 1 14 tooth front sprocket 1 39 tooth rear sprocket Tensile strength of 8200 pounds Factory Spec brand Stock gearing for this model is 14/38 with a 96L chain Factory Spec brand sprockets are made of hardened steel and built to last A stock photo is used, you will receive the kit described in the listing Be sure to check the tensile strength of any chain you buy. Low tensile strength chain will stretch and need to be replaced. Other length chains are available.