Thank you.
From parts diagram the OEM trigger wheel is 30291-Mn5-000 for STD/Tour and IS.
If there are 4 and 6 degree available. What degree is OEM?
Also, if you take timing cover off is there a visual means to tell if you have the 4 or 6 degree wheel?
Since I have the IS ICM I'd like make sure past owner didn't put on a 6 degree trigger wheel.
The OEM has squared cut teeth. the aftermarket do not, they are more like pointed teeth. Also there is also the chance the OEM was modified for the extra degrees.
to see the actual ignition curves of the ICMs, not really just 2 degrees more
http://www.timskelton.com/valkyrie/tech/trigger_wheel_plus_dyna3000.htm