The Polini wheel pin axle designed for the PIAGGIO and Vespa scooters has been designed to have the perfect completion with the suspension arm POLINI code 050.2660, but can also be applied on original levers. It is made of tempered carbon steel with high surface hardness induction and is specific to Ø 20mm wheel bearing. A shave is included in the kit to facilitate the mounting of the package wheel part with the oscillating arm POLINI. To increase safety for use on the track, a plastic bumper knob screwed on the head has been prepared that can be interchangeable in case of a fall.