Before selecting a coil, check the coil primary resistance requirements as specified by the manufacturer of the ignition being used.

The Dyna Twin Fire coil is the new standard for performance and packaging efficiency for single fire ignition installations on Harley-Davidson Motorcycles. The Twin Fire coil incorporates two individual performance ignition coils into one easy to mount package. This solves the problem of trying to mount two ignition coils on Harleys when installing single fire ignition systems. The Twin Fire coil is only slightly larger than the stock Harley coil and uses the stock mounting bracket. The Twin Fire coil will fit under the tank on X L 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. The DC6-4 is used for all dual spark plug head applications. The Dyna Twin Fire coil can be used with any electronic advance ignition system that incorporates dwell control, but cannot be used with the DS6-2 Dyna S or similar ignitions. Not legal for use in California on pollution controlled vehicles - Check local laws before installing.