CAGIVA MJ rear sprocket for Cagiva W4 Trail 50 1992-1994 MJ Corse MJ.256 €33.76 High quality duraluminium (ergal) rear sprocket for Cagiva W4 Trail 50 1992-1994, with chain pitch 520 and with number of teeth from 42 to 56. Select the chain pitch and number of teeth you need by clicking below. Add to cart