how many ccm has the stock injector?

 

doesn't make sense

 

sorry

i Mean: What is the stock size of the main jet ?

On mine : 126

Is it stock or it's the size of a jet kit ?

 

I bought an old race bike once 1991 F2. It had 126 main jets in it, but the stock needles. Im not 100% sure but i think the smaller main jet is part of a jet kit but with adjustable needles that are different from just shimming the stock needles. I looked it up as 132 or 135 main jet stock i believe. I put the 135s in.