NCY Performance Compression Clutch Spring 150CC (QMJ157) GY6 Ruckus
Black = 1000 RPM
Yellow = 1500 RPM
Red = 2000RPM
This spring is found in the GY6 150cc clutch.
Compression springs do a couple of things. First they supply the pressure to engage the belt. They also determine the rate at which the CVT transmission changes from low to high gear. A 1000rpm spring will go into a higher gear than a 2000rpm spring.