Dr. Pulley
Sliding Roller Weight     
Sliding roller weights “slide” inward and outward in the Movable Drive Pulley (MDF) to change/extend the gear ratio

Dr. Pulley Sliding Roller Weights can:
  1. Eliminate abnormal wear in high gear position
  2. Provide outstanding acceleration and re-acceleration
  3. Retain explosive low end acceleration and reach higher top speeds
  4. Last longer than traditional weight rollers and continue giving excellent variator performance