The pulley system in a CVT is made up of two pulleys, one particular connected to the motor and another to the transmission. The two pulleys are related by a belt or chain. The pulleys are formed like cones, and their diameters might be adjusted to change the gear ratio. https://gearboxcvt40616.theisblog.com/34389541/5-simple-statements-about-gearbox-cvt-explained