Polini 171cc big bore cylinder kit for scooters fitted with the Piaggio 125cc 3-valve LEM 4-stroke engine. Like Piaggio Liberty, Fly & Vespa LX, S. This engine is commonly found in models from 2012 (Euro3).

The increased capacity of this aluminium cylinder helps to produce more power and torque. Polini have also included an ECU control module with this kit, this enables the rider to individual set up of the ignition and fuel injection parameters that regulate the supply of fuel to the cylinder.

*Please note that this kit is NOT suitable for 2/4 valve engines or Euro 4 LEM engines.

Polini 140.0216