On another forum not so far away, someone is opining that 500cc iron dommie Model 7 heplex pistons had a split in them.

The oem std pisons that came out of a dommie that I stripped down, with very few miles on it,
certain didn't have any splits in them.
They are solid skirt front and rear - front and rear view shown here.
Don't believe everything you read....

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