As there are many ignition systems availeble we offer an engine without ignition,
so you can put in any of your own choice.
Over 15 year of experience went into this.
Modified from top to bottom:
Tranferports retimed and shaped
Exhaustport raised and widened
Piston lightened, flattened and breatherports added
Crankshaft realigned and ballance checked
Crankcase coated black to improve heat dissipation
Carburator ball beared en choke removed