New, never installed but not in the original packaging, Sunstar 13 Tooth Front Sprocket. This is a quality aftermarket part and not a cheap knock off. According to Sunstar this will fit the following models: 2007-2012 RM-Z 250, 1980-2008 RM 125, 1980-1982 RS 175, and 1978-1984 PE 175. As with any part, please verify this will fit your exact year, sub model, and serial number before ordering. I am not responsible if it does not fit for you and it will still be yours. The Sunstar part number is 32213. I do not see any signs of installation or wear even though this is not in the original packaging. Absolutely No Returns/No Refunds/No Excuses. If you have any issues once your item arrives, please contact me first before leaving any negative feedback. Thanks for looking.