APRILIA MJ rear sprocket for Aprilia RXV 550 06-12 MJ Corse MJ.292 €57.86 High quality duraluminium (ergal) rear sprocket for Aprilia RXV 550 06-12 with chain pitches and and with number of teeth from 42 to 50. Select the chain pitch and number of teeth you need by clicking below. Add to cart