Is your Vespa lagging when you twist the throttle, shuddering during acceleration, or struggling to maintain high-speed cruising RPMs? Over time, centrifugal force creates flat spots on your transmission's rollers, keeping your CVT from transitioning smoothly through its gear ratios. This Genuine OEM Piaggio/Vespa Roller Weight replaces worn, out-of-round weights to bring back the crisp off-the-line throttle response and fluid power delivery your maxi-scooter had when new.