Newly revamped Polini counterpressure springs, in white and blue. Pressure increases make these a great option for light tuning:

White: 7%
Blue: 15%

When performance increases, these springs become a necessity. Variator tuning i.e. rollers will also be required along with the springs. For stronger tunes, we recommend the 3-set from Top Racing or the racing springs from Malossi.