RIEJU MJ rear sprocket for Rieju MRX 125 02-10 MJ Corse MJ.224 €40.85 High quality duraluminium (ergal) rear sprocket for Rieju MRX 125 02-10 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