KYMCO MJ rear sprocket for Kymco MXU 250 2005-2015 MJ Corse MJ.255 €36.10 High quality duraluminium (ergal) rear sprocket for Kymco MXU 250 2005-2015 with chain pitch 520 and with number of teeth from 36 to 46. Select the chain pitch and number of teeth you need by clicking below. Add to cart