this is the excellent dyna s ignition ,self contained,no separate black box,2 year warranty,ultra reliable,better sparks for better starting and smoother running! made in the usa.Will work with standard ignition coils or dyna hi performance items. see our other listings for more models available for z550/60/750/900/1000GPZ1100 .gs550/650/750/850/1000/gsx750/1100 cb400/500/550/750 etc.