torque spring POLINI Evo-Slider for Piaggio

Polini springs that increase pressure by 0%. 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 weight: 50/28mm/kg. Polini spring weight: 50/28mm/kg. Spring thickness: 4.3mm. Total length: 90mm. Internal diameter: 48.5mm. Number of coils: 5.5.