Dyna-S Rotor #6 Suzuki ND (DS3-2)
The Dynatek #6 Rotor comes standard with the Dynatek Dyna-S DS3-2 ignition.
1977-78 GS550 & GS750 bikes --- some of these models came with a ND (Nippon Denso) ignition advancer, others came with a KD (Kokusan Densi) advancer.
The #5 rotor is to be used with the KD ignition advancer.
The #6 rotor is to be used with the ND ignition advancer.