Shimano Steps E-Bike SW E7000-L Left Assist Switch w/ E-Tube EW-SD50 Cable. The ergonomic, adjustable design of the Shimano STePS SW-E7000 switch makes it a breeze to remain in control at all times. While the left switch allows a convenient selection of the support modes (Off, Eco, Trail, Boost, Power Walk), the right shift unit makes easy gear changes by fingertip possible using a Di2 shift system.
Selectable support modes of the left SW-E7000 switch:
Boost: Complete support for a maximum boost and expert climbing. You can choose between a high ("Explorer" mode), medium ("Dynamic" mode) or low ("Custom" mode) level of assist.
Trail: Intuitively smooth gradated support through technical terrain. Automatically adjusts its level of support based on pedal pressure. You can choose between a high ("Explorer" mode), medium ("Dynamic" mode) or low ("Custom" mode) level of assist.
Eco: Solid support for long expeditions.
Power Walk Assist: Assists you when you need to get off the bike and walk it. Simple to activate.