KIT 135cc RV EVOLUTION - VESPA PK / PRIM

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Excl. Tax: £275.46 Incl. Tax: £330.55
 
KIT 135cc RV EVOLUTION - VESPA PK / PRIM
CODE: PO140.0212
OR
Product Description
KIT 135cc RV EVOLUTION - VESPA PK / PRIM

Full Specification
KIT 135cc RV EVOLUTION - VESPA PK / PRIM

POLINI KIT FOR 125 VESPA PRIMAVERA ET3:
“REED EVOLUTION”. I WANT EVEN MORE
Polini Motori has produced a new Evolution kit with a reed valve induction in the
cylinder for the 125 Vespa Primavera ET3.
This creates an engine that is really powerful in every kind of driving condition and
during the races.
The kit with “Reed Evolution” induction in the cylinder comes with: cylinder, piston,
head, reed valve intake manifold and a gasket kit.
The cylinder is cast in aluminium with bore of 57mm.
The liner with Nickel-Siliceous coating improves the piston sliding, its resistance to
wear and abrasion. The transfer ports are designed for racing. It has 6 transfers.
The transfer has a central bridge for a better exhaust gas scavenging.
The head is cast in one piece only and some fins have been made under the head
plane in order to improve the heat dissipation. The compression ratio has been
designed to achieve the best performance.
The piston is cast in aluminium and it has one S10 chromed cast iron ring. After its
working the piston has been covered with special molybdenum-bisulphide coating that
improves the piston sliding during the running in period.
The reed valve has 6 carbon flaps of 0,4 mm thickness and the geometry of the flow
guide allows it to improve of the air-petrol mixtures incoming speed.
The intake manifold has been developed to be matched with the PWK polini
carburettor, available in three different sizes: 24/26/28
To be able to fit this cylinder kit, bore the crankshaft housing in the case. It is
necessary to change the original crankshaft with a new Polini one, part no.
PO210.0034.By fitting these parts you achieved a 135cc of displacement according to
the sprint scooter races’ rules.
To achieve the best performance fit the Polini Evolution 2 muffler, part no. PO200.0291

Fitting this kit may require adjustment of the carburettor. It should only be fitted by someone with the mechanical ability and equipment to rebuild and set up the engine correctly

VESPA: VESPA 125 PRIMAVERA 2T - VESPA 125 PRIMAVERA 2T ET3

po140.0212
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