well, it depend on the rider weight..
we had aero 50 can 45mph, no mod! I was like around 100lbs.
![wink :wink:](./images/smilies/icon_e_wink.gif)
just waste of time to mod aero 50 parts from europe..
stock cdi run forever! , not aftermarket cdi doenst make much difference.
dio motor, polin bore $180.
hs pulley 50.
gear 9.1 50.
dellorto carb 19mm 100.
-------------------------------------
$380. run with stock pipe (",)
this is a good setup for dio motor and possible 60mph.
my good friend toba,purple eater S.
ran corsa, 6.8gear,both rear stock spring only,stock clutch/bell, spipe(remove washer) keli pulley/ramp. 18mm mikuni vm carb, stock intake.airbox/oilpump.
60mph /190lbs rider.
![Shocked :shock:](./images/smilies/icon_eek.gif)
![lol :lol:](./images/smilies/lol.gif)
![Image](http://img156.imageshack.us/img156/1/iconahahado9.gif)