Dyna-S Ignition updates 1971-1978 Sportsters from points to electronic ignition.
Use for 1979-2003 Sportsters by incorporating mechanical flyweights.
4 or 5 OHM coil is required for street applications.
For race applications, a 3 OHM coil can be used.
*Made in the U.S.A.
Fits: 1971-2003 Sportster
