MCS-902525 - Dyna-S ignition module for dual 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; Dy

Fitment:
70-99 Big Twin (excl. TC) and 71-03 XL Sportster (NU)