carb for a polini sport 70.

ok so gurtner 12mm carb is not what i need for my polini sport 70. i was thinking of buying the 17.5mm dellorto or the 21mm dellorto. the only thing is i have an auto choke but was contemplating changing. much help/ opinions appreciated. cheers.

 

go for a 20.5 or 21 mate and use manual choke auto is swag anyway

 

21mm black edition ftw!!! worth the cashh get it off scootermatix £75 or try and find a second hand one (mates got one on his pm xtech) and noticed massive gains from his 17.5

 

my lad runs a 21 on his ZipSP70 and it'll do 70 with the other bits thats fitted :good:

 

i would also jump to a 21mm carb, no point messing around with a 17.5mm when for the same money you can have a 21mm