Now with bigger balls. The new Vespa Upper Steering Bearing set has larger ball bearings than the previous model. Still works in all the older bikes, and allows for smoother steering over a longer period of time. 

Upper Steering Head Bearing and Races for Vespa 50, 125, 150, 250 and 300. Was 650693 CM061303

This is a Genuine Vespa Spare Part in Piaggio Packaging.