I Am new here so be gentle please folks,
I recently got myself a 2008 Yamaha CS50 Jog RR (LC) and i am getting a Polini variator (9 roller) fitted aswell
as a Doppler S3R Exhaust - I know very little about this kind of thing but i read that you must upjet the
carb when fitting a performance exhaust, so my question is what size jet would be needed when i have my new parts fitted?
As i understand it the stock jet size on my bike is 60 but i may be wrong! I Also would appreciate any suggested roller weight changes
as it would save me using the 'trial and error' method, i do not know the stock roller weight.
Thank you in advance,