fits  65-99 Big Twin; 65-03 XL Sportster. For points/Dyna-S ignition (Excl. Twin Cam & other single fire applications) in custom applications. (Custom single fire, carbureted models)

Black. Designed for use in custom applications where 2 of these coils are used for bikes with dual plugged heads (4 spark plugs in total) that run a single fire points style ignition system. Note: It is recommended to use ignition modules & coils of the same manufacturer. Intermixing different brands may cause premature failure. Note: Difference between Single & Dual Fire: – Dual Fire – This is the way the earlier, pre-Twin Cam, engines work. A single coil is used and both spark plugs fire simultaneously. This is the simplest system. The ‘wasted’ spark is sometimes said to be horsepower robbing. – Single Fire – This is the way the stock 00-up Twin Cam engines work. Two separate coils will fire the spark plugs independently and only the spark plug of the cylinder that is on compression stroke will be fired. It is said that these engines vibrate less and can improve power. The effects will become more pronounced with hotter cams and higher RPM.

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Home > Parts > Electrical > Ignition > Coils > Dynatek, Dyna Dual Tower ignition coils. 12V, 5 ohm

fits  65-E78 Big Twin with points ignition; L78-79 Big Twin with OEM V-Fire I/II half electronic ignition; 65-79 XL Sportster (Excl. magneto models). (Dual fire)

Black. OEM style replacement coil for OEM 31609-65A, but OEM did not have ‘DYNA’ logo. Note: It is recommended to use ignition modules & coils of the same manufacturer. Intermixing different brands may cause premature failure.

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Home > Parts > Electrical > Ignition > Coils > Dynatek, Dyna OEM style ignition coil. 12V, 5 ohm