E se proprio devi fare l'upgrade conviene fare la spesona una volta sola. https://www.gambacicli.com/it/sram-gx-eagle-1x12v-upgrade-kit-2018.html?gclid=Cj0KCQjw4eXPBRCtARIsADvOjY1DlPdwkHHZOswDMG6ehXXfbNk33nEE6VziH6UOzE6ALD92Rh6uEv4aAt1zEALw_wcB...