Dynatek, Dyna-S ignition module. Single fire - 70-99 Big Twin (excl. TC) and 71-03 XL Sportster (NU) 903705 Fits: > UNIVERSAL

Fits: > UNIVERSAL

Velcro cinch cuff

Coarse gear

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The special gear reduction design also allows this starter to turn over most Big-Inch high-compression engines without the need of a special (big) battery

Dynatek, Dyna-S ignition module. Single fire - 70-99 Big Twin (excl. TC) and 71-03 XL Sportster (NU) 903705 Fits: > UNIVERSALDyna S ignition module for single fire applications. Comes complete with rotor. Can be used for single or dual plugged heads. The required mechanical advance unit must be purchased separately. Note: Dyna coil recommendations: Dyna 5 Ohm for street use, Dyna 3 Ohm for race use. Note: It is recommended to use ignition modules & coils of the same manufacturer. Intermixing different brands may cause premature failure. Note: Difference between Single &