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  • torque / variator adjuster spring set Polini (2 pcs) +10%, +18% for Piaggio Sfera, Zip AC
These pressure springs by Polini increase pressure by between 10% and 18% over the originals and are thus ideal for easy tuning. The spring has the task of pushing the pulley in the rear converter onto the v-belt. But it also produces the counter pressure that allows shifting at the variator. A stronger spring is necessary on tuned engines as otherwise the v-belt begins to slip. The spring is always in close contact with the Variator. If a different spring is installed, the variator must also be adapted. Spring loading original: 50 / 22mm / kg Polini spring loading: 50 / 24mm / kg or 50 / 26mm / kg wire diameter: 3.9 mm or 4mm overall length: 120mm. Inside diameter: 52mm number of coils: 6

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torque / variator adjuster spring set Polini (2 pcs) +10%, +18% for Piaggio Sfera, Zip AC

  • Brands Polini
  • Product Code: RP.243.030
  • Availability: in EU warehouse - 2-5 days
  • € 16.36

  • Ex Tax: € 13.75