This seat bench is installed as an original part on the Vespa Primavera 125 - PicNic, but it also fits the "normal" Primavera and Sprint models. The seat benches of the Primavera/Sprint 125/150ccm models can be exchanged among each other; however, they do not fit the 50ccm models due to the electrical seat lock release. Conversely, the seat benches of the 50ccm models do not fit the 125/150ccm models due to the manual seat lock release (using a lock and key), but they can be exchanged freely between Primavera 50ccm and Sprint 50ccm models.