Manufactured by Factory Spec Rear Sprocket for Honda ATV 39 tooth, rear steel Sprocket 520 pitch Made in China Sprocket may not be the stock size for all of the models it fits. When changing sprocket sizes, you might also need to change your chain length Fits the following 1993 Honda TRX300EX Sportrax 1994 Honda TRX300EX Sportrax 1995 Honda TRX300EX Sportrax 1996 Honda TRX300EX Sportrax 1997 Honda TRX300EX Sportrax 1998 Honda TRX300EX Sportrax 1999 Honda TRX300EX Sportrax 2000 Honda TRX300EX Sportrax 2001 Honda TRX300EX Sportrax 2002 Honda TRX300EX Sportrax 2003 Honda TRX300EX Sportrax 2004 Honda TRX300EX Sportrax 2005 Honda TRX300EX Sportrax 2006 Honda TRX300EX Sportrax 2007 Honda TRX300EX Sportrax 2008 Honda TRX300EX Sportrax 2009 Honda TRX300X Sportrax ***Stock gearing for these models is 13/38***