Gear set Polini for Piaggio, 17.68 mm, 14*48 teeths. A longer ratio allows for higher top end speed.
Fitting a big bore kit does not always give the expected increased top end speed, it certainly improves acceleration well but not top end speed, Why? This often down the short gear ratios on your scooter, so if you find this is the case, the only way to combat this is by changing the gears to new longer ones.
Also suitable for the following models:
APRILIA : SCARABEO 50 4T 2V RESTYLING Piaggio - SPORTCITY 50 ONE - SR 50 R-FACTORY INIEZIONE (Piaggio)
DERBI : GP1 50 2001-2003 - GP1 50 EURO2-OPEN-RACE dal 2005
GILERA : EASY MOVING 50 - RUNNER 50 PURE JET
PIAGGIO : DIESIS - NRG MC3 Pure Jet - ZIP 50 4T - ZIP 50 SP H2O - ZIP 50 SP H2O mod.2000
VESPA : VESPA 50 ET4
Fitting a big bore kit does not always give the expected increased top end speed, it certainly improves acceleration well but not top end speed, Why? This often down the short gear ratios on your scooter, so if you find this is the case, the only way to combat this is by changing the gears to new longer ones.
Also suitable for the following models:
APRILIA : SCARABEO 50 4T 2V RESTYLING Piaggio - SPORTCITY 50 ONE - SR 50 R-FACTORY INIEZIONE (Piaggio)
DERBI : GP1 50 2001-2003 - GP1 50 EURO2-OPEN-RACE dal 2005
GILERA : EASY MOVING 50 - RUNNER 50 PURE JET
PIAGGIO : DIESIS - NRG MC3 Pure Jet - ZIP 50 4T - ZIP 50 SP H2O - ZIP 50 SP H2O mod.2000
VESPA : VESPA 50 ET4
