Dual-Fire Electronic Ignition System – Harley Davidson

Self-contained ignition system features Hall Effect magnetic sensors which are not sensitive to rpm changes or affected by dirt and oil; Improves overall performance by changing the timing less than three degrees, extends plug life, and eliminates the use of points and condensers; Can be easily installed; Used and endorsed by many championship racers; Made in the U.S.A.; Operation with the Dyna S ignition system requires the use of an aftermarket 5 ohm coil such as part # DC7-1 or a stock points coil from early Shovelheads. Not recommended for operation with OEM coils.