Ultima Single Fire Ignition Kit 53-660 Single fire Ignition Will work on Evolution Sportsters & all nose cone type Shovelhead & Evolution Big Twins motors from 1970 to 1999. Rotor, Single Fire Coil, Control Module and Plug Wires included Ignition kit includes single fire coil that puts out over 30,000 volts with fast rise times and Intelligent overvoltage / overcurrent protection.