Kit 300cc POLINI Ø77mm cylinder / piston used for PIAGGIO , VESPA, DERBI , PEUGEOT ... 300 from 2017

Model sold exactly as in the photos!! Driven for a few hours for testing and bench testing after running-in.

New POLINI 300cc kit for PIAGGIO 300cc engine of 4T scooter (which makes a real displacement of 278cc of origin). Thanks to the special steel cylinder with Nicasil coating and the "HTR" (High Turbulence Ring) ring, it was possible to increase the bore to 77mm, bringing the displacement from the original 278cc to 294cc: a incredible explosion of power and torque from the PIAGGIO 300cc engine.

The thermal unit is mounted without any modification to the original crankcase and cylinder heads . A unique feature in the scooter segment is the "HTR" ring which not only improves the squish effect, but also allows a large bearing surface for the cylinder head gasket, thus ensuring high reliability of this component. The piston has a particularly extended skirt to resist the lateral thrusts generated by the connecting rod.

The combustion chamber cut into the piston crown is shaped to have an optimal compression ratio with large squish strips that mate with the original cylinder head.

Spare parts at the bottom of the description!

Mounts on:

VESPA: 300 4T GTS, GTV E4 from '17 to 20 (MA3 3M )

300 4T GTS, GTV Euro 3 (M454M)

300 4T GTS, SUPER HPE E4 from '19 to '20-> (M4A36M)

APRILIA : ATLANTIC 300

SCARABEO 300 SPECIAL ie

SPORTCITY STREET 300

SR 300 MAX 4T ie

PIAGGIO : BEVERLY 300 ie 2010/2016

BEVERLY 300 ie E4 from 2017 to 2020

BEVERLY 300 ie TOURER

CARNABY-300

MP3 300

MP3 300 E4 from 2017->

PEUGEOT : GEOPOLIS 300i ( PIAGGIO )

GILERA : NEXUS 300

DERBI : RAMBLA 300 ie