YAMAHA MJ rear sprocket for Yamaha GT MX 1977-1979 MJ Corse MJ.717 €38.24 High quality duraluminium (ergal) rear sprocket for Yamaha GT MX 1977-1979 with chain pitch 420 and with number of teeth from 30 to 52. Select the chain pitch and number of teeth you need by clicking below. Add to cart
