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NCY Performance Compression Clutch Spring QMB139
Black = 1000 RPM
Yellow = 1500 RPM
Red = 2000RPM
This spring is found in the hybrid GY6 50cc clutch for the 50cc Honda Ruckus / Metropolitan Engine. Also used on the QMB139.
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. This NCY 1000 rpm compression spring is specifically for the GY6 50.
Wire Diameter: 4.0mm Inner DIameter:49.0mm Length: 106.0mm