Buon Giorno!
https://www.oscaro.com/kit-de-reparation-levier-de-changement-de-vitesse-sasic-2000201-4469950-1633-p ?
Je ne connais pas les frais de port pour envoyer le paquet en Italie par contre... (I don't know the shipping cost to send the parcel to Italia though -- I don't even know if they will ship there actually?! I am surprised it's so hard to find in Italia, here it seems it's readily available, and rather cheap to)