Dyna S Dual Fire Ignition System
Self-contained ignition system features "Hall Effect" magnetic sensors, which are not sensitive to rpm changes or affected by dirt and oil
Improves overall performance by changing less than 3 degrees from 0 to 12,000 rpm, extends plug life, eliminates the use of points and condensers, can be easily installed and comes complete with a three-year factory warranty
Used and endorsed by many championship racers
Fits 70-79 Harleys (80-99 H-D if points-style base plate and advance weights are used)
Note: Not recommended for use with OEM coils. For single plug heads use 133240 coil set for race. 133244 coil set for street.
For dual plug heads use either 133234 or 133239 coils.