Cylinder set (diameter 38.4mm / 49.8cc) - 140.0091 - Polini

Set cylinder Polini (38.4mm / 49.8cc) for the following applications: Vespa PK 50 AIR 2T (1983-1989) / PK 50 FL AIR 2T (1990-1996) / PK 50 XL AIR 2T (1986-1989) / Special 50 AIR 2T (1974-1979) / SS 50 AIR 2T (1965-1971) / V 50 AIR 2T (1965-1979).

The set includes:
- Cylinder;
- Equipped piston (piston, pin, rings, clips);
- Cylinder head;
- Gaskets.

Technical specifications:
- Displacement: 49.8 cc;
- Stroke: 43.00 mm;
- Bore: 38.4 mm;
- Piston pin: 12 mm;
- Maximum power developed: 7,700 RPM;
- Compression ratio: 9.9:1;
- Cooling: air-cooled;
- Material: cast iron;
- Class: Standard.