ER-S05 is a 5-speed hub iGearbox
offering a rear hub intelligent auto shifting solution to work with mid motor.
let the system handle all gear shifting. Just enjoy your riding freely.
you have everything under control in various scenarios, more specific precise and individual.
iGearbox performs shifting by electronic control and motor drive, which makes it automatically, intelligently and precisely match riding conditions. Instant respond , seamless transitions.
249% wide gear ratio enables torque boost on gradients while maintaining efficiency increase on flat roads.
