
Manufacturer reference: NK900.64
Brand: NARAKU
NARAKU counter spring designed for the variator, Sport V.2 version. Made from a modified alloy, it offers better resilience and superior mechanical strength compared to the average. This spring replaces the original component during adjustments or when preparing the secondary transmission to adapt the variator's response to your riding style.
In use, the spring slows down the initial engagement of the variator and promotes a rise in RPM before full engagement: a setting that favours acceleration at high revs rather than immediate grip at low revs. The markings on the coil clearly identify the spring's stiffness to facilitate selection and comparison during preparation or repair.
Replacement part that is easy to install for riders who want to adjust the engagement characteristic of the variator without modifying the clutch. Adhere to manufacturer tolerances and conduct gradual tests after installation.