Dual magnet rotors

What exactly does these do? Are they worth buying? Same way with billet advancers. I would like to know more about them. Thanks

Pardon my ignorance, but I have no idea what you are talking about.
Could you go into a bit more detail? Maybe even with links?

No eBay APP ID and/or Cert ID defined in Kunena configuration

Looks like the blue one is only for Dyna 4000 ignitions, and they make a black one for the 2000 and Dyna S ignitions.

Dynatek Billet Rotor allow simple replacement of the mechanical advancer assembly and ignition rotor with an attactive one piece anodized rotor. The Dyna Billet Rotor is laser etched with accurate timing marks to make ignition setup a breeze. The Dyna Billet Rotor comes in a blue anodized version with two magnents installed for use with the Dyna 4000 ignition as well as in a black anodized version with one magnent installed for use with other ignitions such as the Dyna 2000 and Dyna S ignitions.

Dyna


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So do they make a noticable diffrence. i have a dyna s on my 80 1000. I have looked at them before but didnt know what they were or if they are worth upgrading to.