15x12 Sliding Roller Weights - Monster Scooter Parts

Traditionally, the gear ratio in scooter CVTs is changed by the in-and-out rolling movement of the roller weights. With the innovative Dr. Pulley sliding roller weights, the roller weights "slide" inward and outward in the Movable Drive Pulley (MDF) to change/extend the gear ratio. Dr. Pulley sliding roller weights provide the following advantages over traditional "rolling" roller weights: Eliminate abnormal wear in the high gear position. Enjoy a broader range of gear ratios. Experience outstanding acceleration and re-acceleration properties.