Dynatek, Dyna-S ignition module. Single fire - 70-99 Big Twin (excl. TC) and 71-03 XL Sportster (NU) 903705 Caged Series MirrorLightweight multi-piece design

Caged Series MirrorLightweight multi-piece design

Velcro cinch cuff

Will replace OEM steel 17905-53B pushrods to help reduce reciprocating mass

Fits: > UNIVERSAL

Weight with acid 2

Dynatek, Dyna-S ignition module. Single fire - 70-99 Big Twin (excl. TC) and 71-03 XL Sportster (NU) 903705 Caged Series MirrorLightweight multi-piece designDyna 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 &