Twin Fire II Miniature 3 Ohm Coil - For Big Twin, Sportster, and FXD ModelsTwin Fire II Miniature 3 Ohm Coil For Big Twin, Sportster, and FXD Models Have you lost that spark in your life and in your bike? When you pulled the plug out and put it against the head there's nothing? No problem this coil pack from Dynatek will get you going again. Features: High technology materials now make it possible to put two coils in the same space as the stock coil with greater output No exposed laminations to rust and degrade performance