This is a new set of Dyna ht leads and caps.they are 8mm suppression type.for use with dyna ignition coils .Factory fitted plug boots end and loose coil end fittings to enable you to determine the optimum length for your own application.Dyna leads have excellent noise suppression and maximum performance.they are ideal for all four cylinder machines,gs/gsx/gsx ,fz/fzr/xj.zzr/zeds/gpz/cb550/750/900 cbr's etc etc.availble in pairs for twins. For coils for all bikes see our other listings,also dyna s  and dyna 2000 ignition systems.