RIEJU MJ rear sprocket for Rieju SMX 125 2005-2008 MJ Corse MJ.224 €33.76 High quality duraluminium (ergal) rear sprocket for Rieju SMX 125 2005-2008 with chain pitch 428 and with number of teeth from 40 to 60. Select the chain pitch and number of teeth you need by clicking below. Add to cart