HYOSUNG MJ rear sprocket for Hyosung GT 125 R Comet 2009-2012 MJ Corse MJ.453 €52.69 High quality duraluminium (ergal) rear sprocket for Hyosung GT 125 R Comet 2009-2012 with chain pitch 428 and with number of teeth from 48 to 56. Select the chain pitch and number of teeth you need by clicking below. Add to cart