Centre motor Yamaha PW-S2

Yamaha PW-S2 motors: Another step forward in motor evolution

The Yamaha PW-S2 motor offers everything that made the previous PW-ST model so great. Whether it's instant assistance, virtually maintenance-free operation, or automatic assistance mode, if you don't want to bother changing riding modes, this mode allows the e-bike to select the most appropriate assistance for you. The motor is nimble, lightweight, elegantly integrated, powerful, and above all, reliable. 

The Yamaha PW-S2 ranks among the best e-bike motors on the market and need not fear direct competition even with what is arguably the best-selling motor in the segment – the 4th generation Bosch Performance Line CX motor.
 

Ultra-compact power

Weighing just 2.85 kg, the PW-S2 is 10% lighter than its predecessor and approximately 10% smaller. Its compact design gives e-bike manufacturers greater freedom in frame design, suspension, and ground clearance. The result is better handling and higher performance—without compromise.

Torque of 75 Nm for any terrain

The Yamaha PW-S2 motor achieves a maximum torque of 75 Nm, allowing you to smoothly handle even the most demanding terrain – from steep climbs to slippery, sandy, or muddy surfaces. Thanks to the motor's design, power delivery is instantaneous – assistance begins as soon as you press the pedal, without the need to turn the crank.

Compact dimensions of the structure

A smaller motor means more freedom in frame design (greater clearance, shorter rear triangle) and a cleaner bike appearance. A narrow Q-factor, the option of a front double chainring for a wider range, and automatic assist mode all contribute to a better riding experience.

The PW-S2 is a very solid choice of mid-drive motor for mid-range e-bikes seeking a balance between power, weight, and versatility. If your descriptions are aimed at trekking bikes, sporty city bikes, or lighter trail models, this motor offers a strong "story" element for your content.

Supports cadences of up to 120 rpm: The motor is ideal for dynamic riding, allowing you to pedal quickly without losing energy.

Intelligent automatic support mode

For maximum comfort, the PW-X3 features an intelligent automatic support mode that adapts to current riding conditions. The rider can choose between Eco, Standard, and High Performance modes, with the system automatically adjusting the level of assistance—less on flat terrain, more on inclines. The result is a natural and efficient ride without having to think about settings.

The PW-S2 uses advanced sensor technology to accurately measure pedal pressure, speed, and cadence, allowing the motor to provide optimal support in every situation. This motor is the ideal choice for e-bikes designed for trails, longer trips, or city riding.

The Yamaha PW-S2 is synonymous with performance, reliability, and lightness, taking the e-bike riding experience to a whole new level.