dont think u would need a cdi..... lighter rollers will make it rev more but might make ur pull of shit..... its gettin everything perfect and all to match.... and iwoudnt get a gear up kit with just a 125 engine.... will be SLOW exceleration.....if u can change the rollers your self but sum 12.5.... then try them... see what they are like../ then try 3x12.5 and 3x15.5 (standard rollers) which equals to like just over 13.8... then see what u think of them...
