That's the one... 4 speed auto clutch manual transmission. They were (defunct afaik) definitely crf clones because everything for a crf is a direct fit from engine to body.I think it is, it was from a dirtrunner50 witch is a chinese dirtbike i think, ill probably order a new petcock for the tank if i can or just take this one apart and remove the filter if it has one
You'll have better luck finding a CRF50/70/90 Petcock than trying to find much of anything DR50 related
The filter is the main tube so removing it would basically give you a redundant dual reserve petcock. Not necessarily a bad thing... until you run out of fuel without warning and flipping to reserve to get it parked.