The Yamaha Power Assist System employs a center mount system in which the power unit and battery are mounted close to the pedals to create a low center of gravity. This results in outstanding weight balance and excellent running stability.
The triple sensor system
The triple sensor system anchors the product concept of "Smooth and Powerful". The three sensors are (1) a torque sensor that detects pedaling power, (2) a speed sensor that detects the bicycle's speed, and (3) a crank sensor that detects the number of rotations through pedaling.
Thanks to these three sensors, the system is able to offer the rider continuous assistance under all riding conditions. This constant assist makes the "Smooth and Powerful" concept come alive during rides.
[NEW] PWseries SE
The PWseries SE inherits all the popular features of the first-generation PWseries and then expands the pleasure of riding from streets to fields to become Yamaha’s new standard model. The supported cadence has been raised from 100 rpm to 110 rpm, and the model now features Bluetooth® connectivity so that it can be combined with a Compact multi-function meter.
Max support Speed
Support Mode (%)
*Depending on battery condition and circumstances
Powerful feeling from the beginning. preferred for sporty bike.
Moderate especially at the low speed. Preferred for city bike.
*These characteristics are determined by bicycle manufacturer.
Designed to bring the fun of an E-Bike to all riders, the PWseries features a powerful yet lightweight drive unit; Yamaha’s Triple Sensor System, which emphasizes rider feel; and 4 support modes. This bestselling model is suitable for a broad range of uses, from city riding to mountain biking.