Renthal Grooved Front & Twinring Rear Sprocket Kit - 13/50 GREEN - Kawasaki KX250F _453--520-13GP|1120-520-50GPGN Renthal Sprockets Kit - T Grooved Countershaft Sprocket - T Green TwinRing Rear Sprocket FITS: Kawasaki KX250F ( 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 )