Crankshaft (51mm / 15mm / 19mm) Polini for the following applications: Vespa ETS 125 AIR 2T (1984-1985) / PK 125 AIR 2T (1983-1989) / PK 125 S AIR 2T (1983-1989) / PK 125 XL AIR 2T (1986-1989) / Primavera ET3 125 AIR 2T (1967-1983).
Regarding racing engines, the connecting rod is machined from a solid block to increase its strength under stress. The intake setting has been modified to enhance engine performance. The design of the crankshaft has been optimized to reduce vibrations. Safe and reliable, its assembly is recommended for both original and modified engines.
Technical specifications:
- Small needle bearing included (15x19x20 mm);
- Connecting rod: 97 mm;
- Stroke: 51 mm;
- Piston pin: 15 mm;
- Cone: 19 mm;
- Class: Sport;
- Type: For Race.
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