The Shimano SW0-E8000-L Firebolt Shifter is designed for use with STEPS E8000 eBike drive units.Features:Firebolt technology provides a vivid click feeling Ergonomic switch position adds comfort to MTB riding Power mode change simulates the feeling of normal shifting Operation is intuitive Supported by Shimanos E-Tube Project technology for seamless wireless communication Includes motor assist to push bike and walk assist mode