What are scooter rollers?

Answer 1

Small weights found in the variator of a scooter. They are usually in a short cylinder shape and are responsible for giving the scooter its driving characteristics along with balancing performance with fuel economy. They develop flat spots when they wear out with mileage and are usually the culprit when you lose top speed or have a jerky take off. Replacing them with sliders instead of rollers can transform the personality of your scooter. The heavier the weight the higher top speed your scooter will have but you lose power off the line and on steep hills. Lighter weights give explosive acceleration and good hill climbing at the expense of a lower top speed and the engine revving noticeably higher which is more wear on your motor. Some people have great results mixing half heavier and half lighter than stock but its your scoot, so do this at your own risk.