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- Vespa Classic
- Cylinder -ITALKAST GR-V 135 ccm Ø58mm, stroke=51mm, cast iron, direct intake, 8-valve diaphragm with carbon plates- Vespa PK80, PK125 S/XL/XL2, ETS
Sporty PK125 cylinder kit with direct intake on the cylinder, 8-valve reed valve and PK-specific intake manifold.
The ITALKAST GR-V 135 for Vespa PK125 is technically closely related to the PV/ET3 version, but is specifically designed for the PK platform with an adapted intake manifold. The basic concept remains identical: a sporty cast iron cylinder with direct intake on the cylinder, a large 8-fold diaphragm and an intake side that is clearly designed for performance-oriented smallframe setups.
As with the PV/ET3 version, the PK125 cylinder also works with direct intake on the cylinder. This means that the mixture is not routed via the standard housing intake system, but directly via the cylinder and the diaphragm control. This creates more freedom in the design of the engine and makes the kit particularly interesting for performance-oriented PK125 concepts.
The kit includes a double 8-petal diaphragm block made of aluminium with a vulcanized structure and carbon diaphragm plates. The intake side is thus clearly intended for sporty smallframe engines, which are designed to work with a larger cross-section and freer filling.
With 123° overflow timing and 184° exhaust timing, the PK125 version of the GR-V is also clearly positioned for sporting performance. The kit is not intended as an inconspicuous replacement for a close-to-production PK125 cylinder, but as the basis for a deliberately sportier reed valve setup with matching peripherals.
The main difference between the PK125 version and the PV/ET3 version is the different design of the intake manifold. Anyone mixing parts should therefore ensure that the intake side and frame layout match the respective vehicle platform.
| Manufacturer: ITALKAST | ITALKAST |
|---|---|
| Type | GR-V 135 ccm |
| Type of construction | Cast iron, direct inlet on cylinder |
| Bore / stroke | 58 mm / 51 mm |
| Displacement | 132.37 cc |
| Diaphragm | 8-fold with carbon plate |
| Intake manifold | PK125-specific design |
The ITALKAST GR-V 135 for PK125 is the right variant for all those who want to ride the sporty direct-inlet reed valve concept of the GR-V on the PK platform. The decisive difference to the PV/ET3 version lies in the intake manifold - the basic sporty character of the kit is completely retained.
