The variator springs determine at what revs the rollers begin to push the faces apart and change the gear ratio. Brand: KOSO. Available versions: Variator spring set, 3 pcs - 1000 rpm (item no. 0444) Variator spring set, 3 pcs - 1500 rpm (item no. 0445).
Stiff springs raise the engagement revs, soft ones lower them. Replace them if the springs have sagged and acceleration is sluggish.
