Honda Ruckus 50, 4-stroke The variator transmits the power of the engine to the rear wheel while keeping the engine in an exactly defined rev-band. The Polini variator offers the advantage of a wider range of adjustment. If correct weights are used this will increase acceleration as well as top speed. The kit is supplied with 3 different sets of weights for setting up the variator properly. Attention: Kit contains 1 weight set and 3 additional rollers for combining.