Primary transmission Evolution Z 27/69 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).
- Straight tooth primary transmission with a flexible coupling system and reinforced clutch basket;
- The clutch basket is machined from a solid block and undergoes carburizing heat treatment;
- The steel coupling system flanges ensure maximum strength;
- High-strength steel springs are calibrated to prevent breaking of the gear itself;
- 100% made in Italy;
- Number of teeth on sprockets: 27/69.
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