TRIUMPH MJ rear sprocket for Triumph Speed Triple T509 1997-1998 MJ Corse MJ.463 €61.74 High quality duraluminium (ergal) rear sprocket for Triumph Speed Triple T509 1997-1998 with chain pitch 520 and with number of teeth from 42 to 46. Select the chain pitch and number of teeth you need by clicking below. Add to cart