The E-Tube Kit 4GB Steps from Shimano is an advanced on-board diagnostic tool specially developed for the Shimano Steps e-bike systems. This kit enables comprehensive analysis and adjustment of e-bike components to optimise performance and efficiency. With a storage capacity of 4 GB, it offers sufficient space for storing diagnostic data and software updates. The user-friendly interface allows users to easily manage and customise their e-bike settings. The E-Tube kit is an indispensable tool for anyone who wants to maximise the functionality of their e-bike. It supports maintenance and diagnostics, ensuring smooth use of the e-bike. Integration into the Shimano Steps system ensures that all relevant information can be accessed quickly and efficiently. This product is ideal for technology enthusiasts and e-bike users who value precise control and customisation of their cycling experience.