HELP....!! What is this?

[RoyalShootinstar13]

https://photos.app.goo.gl/LMH3xTqkJF2QA8hCA

[Marcarl]

Telling us what bike and year it is would be helpful.

[RoyalShootinstar13]

1998 Royal Star 1300

[RDawson]

Blowing up the pic on my phone is a little blurry but what I think you’re looking at was the oil fill on the 1st gen engines. They moved it to the clutch cover on the 2nd gens and just plugged that one instead of redesigning the casting.