Cycle Electric Alternator Kit. Manufacturer: Cycle Electric. Model: Alternator Kit. Note 1: These kits include the Screamin Eagle® Big Twin Compensator upgrade. Starting on the 2006 & later Dyna®, 2007-2010 Touring and 2007 & later Softail® models (except FXCW, FXCWC and FXSTSEE3) the compensator spring cup is built in to the alternator rotor.