Dynatek Twin Fire II Miniature 3 Ohm Coil For Harley The Twin Fire II utilizes 2 high voltage coils within one convenient package and is sized to fit in the stock location. Designed to work specifically with the Dyna 2000 ignition system. 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 High voltage and primary terminals machined from brass High-impact thermoplastic housing is ultrasonically welded and sealed against moisture Compact size fits easily under stock covers Peak gap current in excess of 50mA Over 40,000V per output Rated at 3 ohms Accepts 7 to 8mm wire Note: The Twin Fire II is slightly larger than the stock HD coil and uses the stock mounting bracket, it will fit under the tank on XL and FLH models as well as in the stock location on the side of the motor for FXR models or rear of the motor for Dyna and Softail models.