Crankshaft, connecting rod assembly POLINI BIG EVOLUTION long connecting rod 85mm axis Ø12mm liquid PIAGGIO scooter

Crankshaft with 85mm connecting rod lengthened in relation to the origin of 5mm!

Mounts in combination with a BIG EVO normal stroke kit or another kit with a 5mm shim! The long 85mm connecting rod reduces forcings and releases power, especially at high speeds!

 

 

It moves the thermal group 5mm away from the admission, this increases the dead volumes (ideal on a large diameter 47.6mm kit for example) and this prevents the turbulence of the valves from disturbing the admission of the cylinder.

 

This crankshaft made in Italy is of very high quality, it has a mass machined connecting rod, full masses and dynamic balancing.

Comes with a high reach variator nut for a good hold!

 

 

This crankshaft is made for variators with internal Ø16mm axis (barrel). It is therefore suitable for POLINI HI SPEED drives and others! It is also delivered with a special variator flange and wedges as well as the pump drive wheel!

 

Mounts on motor scooter PIAGGIO, GILERA ... air and liquid cooling :

-APRILIA: SCARABEO 50 STREET 2T RESTYLING Piaggio - SR 50 R-FACTORY (Piaggio engine)

-DERBI: GP1 50 2001-2003 - GP1 EURO2-OPEN-RACE 2005

-GILERA: DNA 50 - EASY MOVING - ICE - RUNNER 50 - SP - POGGIALI - STALKER - STORM - TYPHOON 50 - TYPHOON X 50

-PIAGGIO: DIESIS - EXTREM - EXTREM LC - FLY 50 2T - FREE - LIBERTY 50 - MC2-98 - NRG MC3 H2O - NRG Power DD - NRG-NTT-MC2 - QUARTZ - SFERA 50 - SFERA 50 RESTYLING - TYPHOON 50 - ZIP 50 AIR - ZIP 50 AIR mod. 2000 - ZIP 50 FAST RIDER - ZIP 50 SP H2O - ZIP 50 SP H2O mod. 2000

-VESPA: VESPA 50 ET2-LX

 

And other models ...