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These Polini counter pressure springs increase pressure by 10%, 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: 48/24mm/kg. Polini Spring Loading: 48/21.9mm/kg. Spring Thickness: 3.9mm. Spring Length: 100mm. Inside Diameter: 50mm. Number of Turns: 5
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