Polini 61 mm cylinder kit - Paiggio Medley and Vespas
This 61 mm cylinder kit from Italian scooter performance specialist Polini is designed to increase the performances of Piaggio 125-150 cc engines 4 stroke 4 valves (Euro 4 and Euro 5) 4-stroke Medley and GTS 125/150 ie 4V).
The increase of the displacement to 171.8 cc results in a guaranteed increase of 40% greater acceleration, "significantly improving engine response."
The cylinder is made in aluminium with a cast iron barrel. The aluminium piston is equipped with high performance piston rings - one is chromed, and one is in steel and with oil scraper. For an optimal performance, Polini says it is necessary to combine it with the dedicated ECU.
POLINI MOTORI SPA
