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the torque spring must twist as it compresses
this direct-fit replacement is compatible with a wide range of 50cc scooters and 139QMB-based engines from Genuine
earlier engagement)
Madass125 '10 Rear
14mm / ID: 10
NCY CVT Contra Spring 1000 RPM | Minarelli Yamaha 50cc weight the torque spring must twistTune your CVT engagement point with the NCY 1000 RPM clutch compression (contra) spring. The contra spring controls two things: it supplies pressure to engage the drive belt, and it determines the rate at which the CVT shifts from low to high gear. A 1000 RPM spring engages the higher gear range sooner than a higher rated spring, making it ideal for low end torque and urban riding. Fits most Minarelli 50cc 2 stroke applications and the Yamaha Zuma 2T.
