As one of the leaders in the industry Dynatek is making life easy for the custom builder. The latest advanced magnetic core technology delivers high output in one of the smallest packages available. Great for custom bikes where coils need to be hidden. These coils measure only 10.6 cmx5.8 cmx4 cm (4.2"x2.3"x1.6"). Dyna miniature coils for use with the Dyna 2000 and 3000 series ignitions, factory installed electronics, or other after-market ignitions that employ dwell control. These Miniature coils have a secondary output of 35.000 Volt with and spark energy of 50 mJ.