Secondary transmission Z 14/43 Polini for the following applications: Piaggio Liberty 50i IGET AIR 4T 3V E3 (2015-2017) / Liberty 50i IGET AIR 4T 3V E4 (2017-2020) / Liberty Sport 50i IGET AIR 4T 3V E3 (2015-2017) / Liberty Sport 50i IGET AIR 4T 3V E4 (2017-2020) / Vespa Primavera 50i IGET AIR 4T 3V E4 (2017-2020) / Sprint 50i IGET AIR 4T 3V E4 (2017-2020).
- Engine E3: must be combined with Polini cylinder kit 140.0223, CDI unit 171.0007 and variator 241.737;
- Engine E4: must be combined with Polini cylinder kit 140.0223, CDI unit 171.0009 and variator 241.737;
- Number of teeth on sprockets: 14/43.
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