Buy from the source - Welcome to our online store!
  • MSF

    Single-Fire; Our Latest Creation – In-line polarizing solid state adapters to convert your magneto to single-fire with both single OR dual-plug applications! Yes, you can run dual plugs from a single mag! (Dual plug operation requires the use of 2 MSF units.) Only the live cylinder fires. Works with all Harley and F-M style magnetos.