FANTIC MJ rear sprocket for Fantic K-roo 212 1994 MJ Corse MJ.345 €46.52 High quality duraluminium (ergal) rear sprocket for Fantic K-roo 212 1994 with chain pitches and and with number of teeth from 38 to 54. Select the chain pitch and number of teeth you need by clicking below. Add to cart