VARIATOR MAXI SCOOTER POLINI HI-SPEED FOR PIAGGIO 125 MEDLEY 2016>, 125 VESPA GTS 2016> (241.733)

An absolute novelty is represented by the piston pin made of nickel-chromium steel, characterized by a truly low coefficient of friction.
The transmission kit includes a fixed “Air Speed” half-pulley and a movable half-pulley designed to allow the belt to increase excursion.
The Polini Maxi Hi-Speed ??is delivered with a thrust spring 20% ??harder than the original one.
The rollers are covered by a new blend of nylon and aramid fiber material.
Two series of rollers are included in the kit: a specific series for Medley 125cc and a series for Medley 150cc.
roller weight 19x17 9.7 and 11.5 gr