Torque spring POLINI Piaggio -8%

Polini springs reduce pressure by 8% and are therefore ideal for tuned engines. The springs press the gear on the rear converter onto the belt. They also create pressure to shift the variator. A lighter pressure is required once an engine has been tuned to prevent it from moving into a dangerously high rev range. The spring pressure is closely tied to the variator. If a spring is fitted, it must be matched to the variator. Original spring pressure: 50/28mm/kg. Polini spring pressure: 50/20mm/kg. Spring thickness: 4mm. Total length: 96mm. Internal diameter: 49.5mm. Number of coils: 6.