Yamaha's mid-drive motor system's overall theme is "smooth and powerful". It uses a torque sensor that detects pedaling power, a speed sensor that detects the bicycle's speed, and a crank sensor that detects the number of rotations through pedaling to create an organic feeling of assist.
-Lightweight, compact 400Wh battery that can be charged on the bike, and be locked to the frame
-Zero Cadence Support ensures the system will engage at the first pedal stroke with lively, powerful assist
-Four power modes (OFF, ECO, STD, HIGH) let you choose the level of assist that you're feeling at the moment
-Navigate through a ton of metrics on the bright, easy to read display with the handy control unit