torque spring Polini +15% for Piaggio 125-180cc 2-stroke

These Polini counterpressure springs increase pressure by 15%, making them ideal for light tuning. When the level of tune increases, so too should the strength of the springs. Variator must be calibrated if springs are changed. Original Spring Loading: 70/36mm/kg Polini Spring Loading: 70/42mm/kg Spring Thickness: 4.7mm Spring Length: 170mm Inside Diameter: 55.5mm Number of Turns: 7