02 cr125 (144 big bore)

[TNUTT]

I had my cylinder bored out to the 144 kit by eric. I was wondering where is good place to start as far as main, pilot jet and needle clip when re-jetting for the 144. It is ported for race fuel. Thanks

 

[Rich Rohrich]

It's tough to give a definitive answer but generally speaking you can lean the pilot and the needle as a starting point. Most of the time the main can be leaned as well but try the other two first.