I bought a 5mm jet for my dellorto aerox and went to fit it and its like long and thin whereas the one one i took out was alot thicker.. does this mean i need the 6mm option?
Yes. Nearly all standard Delorto carbs in the 12 or 17.5mm size take the 6mm jet. After market Delorto 19 and 21mm (phbg) carbs take a 5mm jet.
Blue dwarf whats the size for the stock gilera runner 125 carb? Its a delorto 20.5 phvb and the jet is 72.5
i got the jets off the carb and it has a 72.5 main jet and the jet next to the main is a small one too that says H50 on that !!!!!!!