A very large kit renowned for having a very high power while being extremely durable. The CORSA polini or race in French is a d.47mm cast iron kit (PATA NEGRA) hand retouched with very advanced diagrams.
It retains a normal exhaust and a bi segment piston which allows a lot of torque and strength. It will reach powers of a majority of stock aluminum kit (not retouched).
It comes with a carburation adjustment nozzle, a cold racing candle, carbon racing valves studied kit. Its piston is reinforced and worked kit, its cylinder head is frustoconical polished really well calculated which allows it a very good power by adding a good squish.
The cylinder that remains in 5 transfers but has a reviewed and corrected admission and everything is in the charts retouched by hand. Will also appreciate the reinforced ring gasket that avoids many well known concerns about this type of engine: aluminum joints flat broke.
This kit also comes with a reinforced needle cage and greased. Noted the finish of the side transfers that leaves something to be desired.
We recommend it with at least: reinforced crankshaft, carburetor 21mm and settings, reinforced bearings, racing exhaust.
Pack CORSA POLINI 70 containing:
piston bi segment d.47mm POLINI
2 reinforced segments d.47mm X1
piston pin in 10mm
needle cage reinforced d.10mm inside POLINI
POLINI stickers
POLINI manual very complete
guaranteed POLINI
cylinder studs for exhaust mounting
cold racing candle CHAMPION
1 nozzle
X2 piston clips (shaft rods) type crab
parck reinforced complete joint POLINI
polished frustoconical racing cylinder head d.47mm POLINI
carbon racing valves 0,35mm POLINI
cast iron cylinder hand retouched 5 transfers POLINI CORSA
Optionally we offer a stage 1 preparation, this preparation is a modification of the channels and exhaust light by increasing the diagrams and improving the pipe, it increases the performance of the cylinder. An improvement of the piston and skirt stocking is also included in this modification. Allow a little extra time for this preparation!
Mounts on motor PIAGGIO liquid 50cc 2 times:
APRILIA SR
ARPILIA SR R
DERBI GP1
DERBI GPI OPEN
GILERA DNA
GILERA RUNNER SP before 2005
GILERA RUNNER SP after 2006
GILERA RUNNER
PIAGGIO NRG EXTREME
PIAGGIO NRG MC2 before 1997
PIAGGIO NRG MC2 after 1998
PIAGGIO NRG
PIAGGIO NRG MC3 DD
PIAGGIO NTT
PIAGGIO NRG Power DD
PIAGGIO QUARTZ
PIAGGIO ZIP SP after 2001
PIAGGIO ZIP SP before 2000
And other models ...
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