Polini Motori Ø 61 cylinder kit has been designed to give a power injection to your scooter. The displacement has been increased up to 171,8cc, with a 40% increment of performance in acceleration. The cylinder is in aluminum with barrel made of cast iron and casting included, piston mad of aluminum with one chromed ring, 1 steel ring and scarper rings. For a proper carburation it is necessary to assemble the kit with the ECU. The Polini ECU controls the quantity of fuel that enters the cylinder so modifying the injection timings. 

Part Number : 140.0221

PIAGGIO : MEDLEY 125 ie 4T 4V EURO 4 - MEDLEY 150 ie 4T 4V EURO 4 

VESPA : VESPA 125 GTS ie EURO 4 LC 4 VALVOLE - VESPA 150 GTS ie EURO 4 LC 4 VALVOLE