This is a pack of four optional Novarossi 1.1mm Buggy Clutch Springs, intended for use with the Novarossi Clutch System (NVR71000). These springs are one notch heavier than the stock 1.0mm springs.
The stiffer the spring, the later the clutch will engage allowing the engine to spool up to a higher RPM range before the clutch comes on. This results in a less smooth engagement, but more 'pop' when it does. Keep in mind, the later the clutch engages, the more the clutch will slip causing the clutch shoes to wear out more quickly.
This product was added to our catalog on December 11, 2014