The new generation: Light motor, throttle-power + proportional assist, 350W. The most versatile model: powerful enough to cruise without pedaling, this motor also features the patented BionX proportional assist feature. These models are ideal for riders who want more.
Strengths: Powerful. -L model is very long distance (60 miles+). Regenerates like a Prius when you squeeze the brakes. Power makes you feel like a strong wind at your back but you still need to pedal.
Weaknesses: None yet found.
Bottom Line:
This is a great system. Instead of an electric motorcycle or electric scooter, this system is a true electric assist system. It makes you feel like Superman on your own bike and goes forever.