Fasstek ECO CVT Torque Spring - Yamaha NVX/Aerox/NMAX

Fasstek ECO torque spring for CVT secondary sheath. Tune and Improve your scooters acceleration with this item. Available in 1000/1200/1500RPM engagement weights to fit your preferences. Best results when also paired together with a Racing Clutch Variator/Pulley kit.

Fitting:

Yamaha NVX/Aerox 155

Yamaha NMAX 155