YAMAHA MJ rear sprocket for Yamaha YZF R7 1999-2001 MJ Corse MJ.703 €33.76 High quality duraluminium (ergal) rear sprocket for Yamaha YZF R7 1999-2001 with chain pitches 520 and 530 and with number of teeth from 34 to 54. Select the chain pitch and number of teeth you need by clicking below. Add to cart