That is quite odd,
MVVS list four different models of the 80cc, or:
80 ICU-L
80SP (ICU-S)
80 Twin Spark
80 w Starter (same engine as 80 SP but has a built in starter)
The 58, 80 and the 116 have always been their flagship engines. In fact the 80 is probably the best engine in its size class available, bar none